Updated on 2024/04/07

写真a

 
TSUJIOKA Tetsuo
 
Organization
Graduate School of Engineering Division of Electrical and Electronic Engineering Associate Professor
School of Engineering Department of Electrical and Electronic Systems Engineering
Title
Associate Professor
Affiliation
Institute of Engineering

Position

  • Graduate School of Engineering Division of Electrical and Electronic Engineering 

    Associate Professor  2022.04 - Now

  • School of Engineering Department of Electrical and Electronic Systems Engineering 

    Associate Professor  2022.04 - Now

Degree

  • Dr. Eng. ( Osaka City University )

  • Master of Engineering ( Osaka City University )

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering  / Information Communications Engineering

Research Interests

  • Wireless Communication Systems

  • Embedded Systems

  • Sensor Networks

Research subject summary

  • His current interests include flexible networking, channel coding for error correcting, ad-hoc networking, outdoor/indoor wireless monitoring systems, applications for wireless helthcare systems, etc.

Research Career

  • Measuring Systems for Thermal Engineering

    Superheated Steam, Thermal Engineering, Humidity Measurement  Joint Research in Japan

    2012.04 

  • Web Database System

    Joint Research in Japan

    2003.04 

  • Computer Communications Networking

    Computer Networks  Individual

    1900.04 

  • Mobile Communications

    Mobile  Individual

    1900.04 

  • Error Correcting Codes

    Error Correcting, Coded Modulation, Low Density Parity Check Codes  Individual

    1900.04 

  • Optical Orthogonal Codes

    Coded Modulation, Computer Networks  Individual

    1900.04 

  • Medical Communication Systems

    Individual

    1900.04 

Professional Memberships

  • IEICE Japan

      Domestic

  • IEEE

      Overseas

  • The Society of Instrument and Control Engineers

      Domestic

  • The Japan Society of Mechanical Engineers

      Domestic

  • Japan Association of IT Healthcare

      Domestic

Committee Memberships (off-campus)

  • 情報理論とその応用シンポジウム2024 実行委員長   電子情報通信学会  

    2022.12 - Now 

  • 基礎・境界ソサイエティ 情報理論とその応用サブソサイエティ 委員   電子情報通信学会  

    2022.12 - Now 

  • Selection Committee Member   ICOM Electronics Communication Engineering Promotion Foundation, Japan  

    2004 - Now 

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    2004-2018, Selection Committee Member
    2019-, Selection Committee Member (Chairman)

  • 英論文誌(A)小特集号編集委員   電子情報通信学会  

    2021 - 2022 

  • 情報理論とその応用シンポジウム(SITA2001,2007,2009,2021) 実行委員   情報理論とその応用学会  

    2001.04 - 2009.12 

  • 委員   大阪市消防局 市民防災研修アクションプラン有識者会議  

    2018.04 - 2019.03 

  • 委員   大阪市消防局 大阪市立阿倍野防災センター整備業務検討有識者会議  

    2017.04 - 2018.03 

  • 委員   大阪市消防局 大阪市立阿倍野防災センターリニューアル基本計画検討有識者会議  

    2016.04 - 2017.03 

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    大阪市立阿倍野防災センターリニューアル基本計画検討有識者会議委員

  • Editor of IEICE Transactions (A)   IEICE Japan  

    2016 - 2017 

  • Member of TechComm. Information Thery   IEICE Japan  

    2010 - 2015 

  • Director Council of Representatives   IEICE Japan  

    2009 - 2010 

  • 通信方式研究専門委員会 専門委員   電子情報通信学会  

    2008 - 2013 

  • 委員   国際会議 WPMC2009 プログラム委員会  

    2008 - 2009 

  • Editor of IEICE Transactions (A)   IEICE Japan  

    2008 - 2009 

  • 委員   国際会議 APCC2008 プログラム委員会  

    2007 - 2008 

  • 英論文誌(A)小特集号編集委員   電子情報通信学会  

    2007 - 2008 

  • Editor of IEICE Transactions (B)   IEICE Japan  

    2007 - 2008 

  • Director Council of Representatives   IEICE Japan  

    2007 - 2008 

  • 委員   国際会議 TJC2007 プログラム委員会  

    2007 

  • Member of Study Grp. Electric Tech. Rep.   IEICE Japan  

    2006 - Now 

  • 情報伝送と信号処理ワークショップ実行委員会 実行委員   電子情報通信学会  

    2006 - Now 

  • Secretary of TechComm. Communi. Systems   IEICE Japan  

    2006 - 2007 

  • 代議委員   電子情報通信学会  

    2006 - 2007 

  • Editor of the Journal of IEICE   IEICE Japan  

    2006 - 2007 

  • 英論文誌(A)小特集号編集委員   電子情報通信学会  

    2006 

  • Secretary of Kansai Section   IEICE Japan  

    2005.04 - 2007.04 

  • 国際会議 ISITA2006 TPC幹事   情報理論とその応用学会  

    2005 - 2006 

  • 査読委員   電子情報通信学会  

    2004 - Now 

  • Committee Member of UWBST&IWUWBS2004   IEEE  

    2003 - 2004 

  • 国際担当幹事   情報理論とその応用学会  

    2003 - 2004 

  • 通信方式研究専門委員会 専門委員   電子情報通信学会  

    2001 - 2005 

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Awards

  • ヒューマンコミュニケーション賞

    大平原 誠, 辻岡 哲夫, 渡辺 一志, 岡 育生

    2022.12   電子情報通信学会   視覚障がい者のためのアーチェリー競技支援システムの開発 ~ 被験者実験による音響式照準器の性能評価 ~

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    2022年3月に発表した下記の論文について,電子情報通信学会ヒューマンコミュニケーション賞が授与された.
    題名:視覚障がい者のためのアーチェリー競技支援システムの開発 ~ 被験者実験による音響式照準器の性能評価 ~

  • 第20回学術大会 大会長優秀発表賞

    渡辺 一志, 山下 和彦, 辻岡 哲夫, 藤堂 聖真, 山下 久仁子, 本宮 暢子, 中井 久純

    2021.10   日本健康行動科学会   呼気同期皮膚振動刺激による副交感神経賦活化の刺激周波数による差異

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    大阪市立大学(工学研究科 電子情報系専攻 情報通信領域修了の藤堂聖真さん,電子情報系専攻 辻岡哲夫)が装置開発を担当している呼気同期皮膚振動刺激に関する研究成果発表が,令和3年10月3日開催の日本健康行動科学会 第20回学術大会において,大会長優秀発表賞を受賞しました.

    講演題目
    「呼気同期皮膚振動刺激による副交感神経賦活化の刺激周波数による差異」
    渡辺一志,山下和彦,辻岡哲夫,藤堂聖真,山下久仁子,本宮暢子,中井久純

    都市健康・スポーツ研究センター,工学研究科,生活科学研究科,神戸国際大学で,学部間・大学間共同研究として取り組んでいます.

  • 電子情報通信学会 通信ソサイエティ 活動功労賞

    2016  

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    Country:Japan

  • IEICE Fellow

    2014  

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    Country:Japan

  • IEICE Communications Society Distinguished Contributions Award

    2013  

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    Country:Japan

  • IEICE Senior Member

    2011  

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    Country:Japan

  • Chairman's Prize, IEICE Technical Committee on Communication Systems

    2011  

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    Country:Japan

  • IEICE Communications Society Distinguished Contributions Award

    2010  

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    Country:Japan

  • IEICE Communications Society Distinguished Contributions Award

    2008  

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    Country:Japan

  • IEICE Communications Society Distinguished Contributions Award

    2007  

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    Country:Japan

  • IEICE Engineering Sciences Society Special Award of Appreciation

    2005  

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    Country:Japan

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Job Career (off-campus)

  • Nippon Telephone and Telegraph   NTT Network Innovation Laboratories

    1999.02 - 2000.03

  • Nippon Telephone and Telegraph   NTT Optical Network Systems Laboratories

    1994.04 - 1999.01

Education

  • Osaka City University   Dept. of Electro-Engineering   Master's Course   Graduated/Completed

    1992.04 - 1994.03

  • The University of Electro-Communications   Department of Electronic Engineering     Graduated/Completed

    1987.04 - 1992.03

Papers

  • Development of Measuring Device for Thermal Environment in an Oven for Food Processing - Wireless Measurement of Temperature and Humidity Distributions in a Reel Oven - Reviewed

    Kazuma Kodama,Taro Ozaki,Akihiro Morikawa,Hiroyuki Iyota,Tetsuo Tsujioka

    52 ( 12 )   707 - 712   2016.12( ISSN:0453-4654

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • Study on Humidity-Measuring Method Using Wetted Porous Ceramics for High-Temperature Gas Reviewed

    Kohei Miura, Taiki Matsumoto, Hiroyuki Iyota, Akihiro Morikawa, Tetsuo Tsujioka, Michiaki Tanaka, Naoki Uesugi

    Netsu Bussei   30 ( 1 )   9 - 17   2016.02( ISSN:0913-946X

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • A Study on Detection of Breathing Using Tilt Angle Sensor and its Wireless Monitoring

    Tetsuo Tsujioka and Seima Todo

    IEICE Technical Report   119 ( 256 )   9 - 13   2019.10

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    Publishing type:Research paper (scientific journal)   Kind of work:Single Work  

  • Recommender Scheme Based on Correlation Between Authors for the Technical Committee Submission System

    Tetsuo Tsujioka and Takahiro Takumi

    IEICE Technical Report   119 ( 6 )   7 - 11   2019.04

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • A study on wireless sensor network using relay nodes supporting two channels

    Tetsuo Tsujioka, Daiki Suruga, Hiroyuki Iyota

    568 - 573   2018.12

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Development of wireless temperature / humidity sensor that can run under high temperature of over 200 degree Celsius: Application to food engineering and its challenges Invited

    Tetsuo Tsujioka, Hiroyuki Iyota

    Proc. Kansai-section Joint Convention of Institutes of Electrical Engineering   336 - 337   2018.12

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Study on distance measurement using microphones placed near each sound source

    Tetsuo Tsujioka, Hikaru Umeda

    556 - 561   2018.12

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Emotion Extraction from Face Images and its Quantification/Visualization ~ Experimental Evaluation in Music Concerts and Rakugo Performance ~

    Seima Todo, Tetsuo Tsujioka, Kazunobu Okazaki and Akihiro Odanaka

    IEICE Technical Report   118 ( 275 )   43 - 49   2018.11( ISSN:1881-4794

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    Authorship:Lead author   Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • Humidity estimation method based on measurement of surface temperature of wet porous material: On improvement of accuracy under unsteady conditions Reviewed

    Shota Kitamura, Kohei Fukuchi, Hiroyuki Iyota, Tetsuo Tsujioka

    Proc. The 35th Sensing Forum   207 - 211   2018.08

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

  • Development of a wireless temperature/humidity sensor nocde that can be placed in food processing ovens: Experimental evaluation of a wireless sensor networking suitable for food factory

    Tetsuo Tsujioka, Shouta Kitamura, Hiroyuki Yamamoto, Hiroyuki Iyota

    Proc. The 35th Sensing Forum   203 - 206   2018.08

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Development of hygrometer for high-temperature moist air by temperature menasurement of wet porous material: Accuracy improvement based on thermal analysis

    Shota Kitamura, Munemitsu Nomura, Hiroyuki Iyota, Tetsuo Tsujioka, Naoki Uesugi

    Proc. 34th Sensing Forum   219 - 222   2017.08

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Development of a wireless temperature/humidity sensor nocde that can be placed in food processing ovens: A study on improvement of accuracy and stability of temperature measurement

    Tetsuo Tsujioka, Shouta Kitamura, Hiroyuki Yamamoto, Hiroyuki Iyota

    Proc. 34th Sensing Forum   219 - 222   2017.08

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Archery Arrow Localization Using TDOA of Impact Sound Reviewed International coauthorship

    Sangseok Ha, Ikuo Oka, Tetsuo Tsujioka, Hitoshi Watanabe, Yu Morishima

    Proceedings of the 2017 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'17)   477 - 480   2017.02

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    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work  

  • 食品用連続蒸し器庫内における加熱環境測定装置の開発 ~温度・湿度分布のワイヤレス測定~

    児玉 飛翔, 高山 正宏, 伊與田 浩志, 辻岡 哲夫

    第33回センシングフォーラム計測部門大会   2016.09

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    Publishing type:Research paper (conference, symposium, etc.)   Kind of work:Joint Work  

  • Remote Measurement System of Heat Environment in Industrial Food Processing Ovens in Wireless Communications -- Evaluation of Accuracy and Reliability of Thermocouple Measurement with Delta-Sigma A/D Converters --

    Tetsuo Tsujioka, Tatsuya Mizoguchi, Akira Nagaoka, Kazuma Kodama, Hiroyuki Iyota

    IEICE Technical Report   116 ( 123 )   93 - 97   2016.07( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • Development of a Wireless Temperature/Humidity Sensor Node hat can be Placed in Ovens Reviewed International coauthorship

    Tetsuo Tsujioka, Akihiro Morikawa, Kazuma Kodama, Taro Ozaki, Hiroyuki Iyota

    Proceedings of the 15th Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2016)   56   2016.06

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    Authorship:Lead author   Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

  • Development of Psychrometer Using Porous Ceramic Probe for Improved Utilization of Superheated Steam Reviewed International coauthorship

    Hiroyuki Iyota, Kohei Miura, H. Yoshioka, Tetsuo Tsujioka, M. Tanaka, N. Uesugi

    Proceedings of the 15th Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2016)   280   2016.06

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    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

  • Additional Design and Implementation of the IEICE Technical Committee Submission System toward a Complete Electronic Publishing

    Tetsuo Tsujioka, Mayumi Matsunaga and Tomohiro Ishihara

    IEICE Technical Report   116 ( 62 )   67 - 74   2016.05( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • Development of Measuring Device for Thermal Environment in an Oven for Food Processing:—Wireless Measurement of Temperature and Humidity Distributions in a Reel Oven— Reviewed

    KODAMA Kazuma, OZAKI Taro, MORIKAWA Akihiro, IYOTA Hiroyuki, TSUJIOKA Tetsuo

    The Society of Instrument and Control Engineers, Transactions of the Society of Instrument and Control Engineers   52 ( 12 )   707 - 712   2016( ISSN:0453-4654

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    Publishing type:Research paper (scientific journal)  

    Several types of ovens have been widely used for food processing and cooking. In this process, foods in an oven are heated by combination of heat transfers such as convection, conduction and thermal radiation. The quality of food products are affected by these heating conditions. In food factories, temperature inside the oven and baking time are adjusted by empirical human operations based on measured temperatures only at fixed-point. Therefore, it can be effective to measure the thermal environment where the food actually placed/moved in the process in real time. We have developed an electronic circuit board and a measuring device having wireless data communication function to measure the thermal environment parameters of temperature, humidity, wind speed, radiation contribution rate, vibration of the food inside the oven. We have performed the practical experiment with a reel oven working at food industry over 175<i>&deg;</i>C for 1800s. The results show that the thermal environment nearby the food in the oven can be measured and temperature profiles also can be traced.

    DOI: 10.9746/sicetr.52.707

    CiNii Article

  • Development of Humidity Measuring Device Using Porous Ceramic Based on Principle of Psychrometer Reviewed International coauthorship

    Kohei Miura, Hiroyuki Iyota, Taiki Matsumoto, Tetsuo Tsujioka, Akihiro Morikawa, Michiaki Tanaka, Naoki Uesugi

    Proceedings of the 24th IIR International Congress of Refrigeration (ICR2015)   349   2015.08

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    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

  • Study on humidity measurement method above boiling point using principle of psychrometer

    Kohei Miura, Taiki Matsumoto, Hiroyuki Iyota, Akihiro Morikawa, Michiaki Tanaka, Naoki Uesugi

    2015.04

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    Publishing type:Research paper (scientific journal)  

  • Development of Wireless Meaduring Device in Oven-Type Heating Device

    H. Kodama, K. Miura, H. Iyota, A. Morikawa

    18P24   2015.03

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    Publishing type:Research paper (scientific journal)  

  • An Experiment of Outdoor Positioning Using a 920 MHz Wireless Multi-Hop Network

    Mai Furusato, Kohei Tezuka, Shigeyoshi Nakajima, Hiroyuki Kotani, Yasuhiro Takahashi

    通信講演論文集2   611   2015.03( ISSN:1349-1377

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    Publishing type:Research paper (scientific journal)  

  • Development of Humidity Measuring Equipment under High Temperature and High Pressure

    H. Yoshioka, R. Motoyama, K. Miura, H. Iyota

    15A25   2015.03

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    Publishing type:Research paper (scientific journal)  

  • B-18-64 An Experiment of Outdoor Positioning Using a 920 MHz Wireless Multi-Hop Network

    Tsujioka Tetsuo, Furusato Mai, Tezuka Kohei, Nakajima Shigeyoshi, Kotani Hiroyuki, Takahashi Yasuhiro

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2015 ( 2 )   2015.02

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    Publishing type:Research paper (conference, symposium, etc.)  

    CiNii Article

  • Experimental Study on Outdoor Positioning in 920MHz Wireless Networks

    Mai Furusato, Kohei Tezuka, Shigeyoshi Nakajima, Hiroyuki Kotani, Yasuhiro Takahashi

    Proceedings of Symposium on Information Theory and Its Applications   383 - 388   2014.12( ISBN:9784885522932

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    Publishing type:Research paper (scientific journal)  

  • Investigation of Humidity Measurement Method Using Porous Ceramics Based on Principle of Psychromete

    Kohei Miura, Taiki Matsumoto, Hiroyuki Iyota, Akihiro Morikawa, Michiaki Tanaka, Naoki Uesugi

    The 35th Japan Symposium on Thermophysical Properties   154 - 156   2014.11( ISSN:0911-1743

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    Publishing type:Research paper (scientific journal)  

  • Elements of a Real-Time Vital Signs Monitoring System for Players during a Football Game Reviewed International coauthorship

    Shinsuke Hara, TetsuoTsujioka, Takunori Shimazaki, Kouhei Tezuka, Masayuki Ichikawa, Masato Ariga, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

    Proceedings of IEEE Healthcom 2014   2014.10

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    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

    DOI: 10.1109/HealthCom.2014.7001886

  • Temperature and Humidity Sensing at High Temperature : Remote Monitoring Using Wireless Networks in the 2.4GHz Band Invited

    MORIKAWA Akihiro, MIYAWAKI Nozomi, TSUJIOKA Tetsuo, MIURA Kohei, MATSUMOTO Taiki, IYOTA Hiroyuki, TANAKA Michiaki, KITAMURA Haruo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   114 ( 119 )   85 - 89   2014.07( ISSN:0913-5685

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    Publishing type:Research paper (conference, symposium, etc.)  

    Recently, the superheated steam is widely used in the various fields, for example, drying, sterilization and cooking. In the use of superheated steam, humidity in the processing device is one of the important parameters affecting the product quality. Therefore, a new humidity sensor which can be used at high temperature is required to be developed. There is also a demand to monitor the distribution of humidity inside the processing device. So we develop a system that can monitor humidity measured in remote places at high temperature in real time. In this paper, we show structure of the system. It is confirmed that our system can measure humidity at high temperature and can monitor humidity data in real time.

    CiNii Article

  • Temperature and Humidity Sensing at High Temperature -- Remote Monitoring Using Wireless Networks in the 2.4GHz Band --

    Akihiro Morikawa, Nozomi Miyawaki, Kohei Miura, Taiki Matsumoto, H. Iyota, M. Tanaka and H. Kitamura

    IEICE Technical Report   114 ( 119 )   85 - 89   2014.07( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • Exercise Energy Expenditure Estimation for Athletes Using Acceleration Data

    Masato Ariga, Shinsuke Hara, Hajime Nakamura, T. Kawabata, H. Okuhata, M. Ise, K. Watanabe, N. Arime

    Japanese Journal of Applied IT Healthcare   9 ( 1 )   82 - 86   2014.05( ISSN:1881-4808

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    Publishing type:Research paper (scientific journal)  

  • 加速度情報を用いた運動選手のエネルギー消費量推算

    有賀 雅人, 辻岡 哲夫, 原 晋介, 中村 肇, 河端 隆志, 奥畑 宏之, 伊勢 正尚, 渡邊 賢治, 有銘 能亜

    (一社)ITヘルスケア学会 ITヘルスケア   9 ( 1 )   82 - 86   2014.05( ISSN:1881-4808

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    Publishing type:Research paper (conference, symposium, etc.)  

    近年、運動選手のバイタルデータを用いて運動中の身体状態を把握する研究が盛んである。我々は、歩行運動に加えて、速度の速い走行運動においても、加速度情報から身体のエネルギー消費量を正確に推算することを目指している。走行時は、歩行時と比較して動作が異なり、従来の推算法では誤差が大きいため、新しい推算法が必要とされていた。本稿では、加速度の大きさの多次モーメントを用いて酸素摂取量を推算する方法を提案した。運動選手に加速度センサと呼気ガス分析装置のマスクを装着し、トレッドミルを用いて運動選手を対象として検証実験を行った。従来方式と提案方式の2方式を評価するため、測定した共通の3軸加速度を用いて酸素摂取量を推算し、同時に測定した酸素摂取量の実測値とのRMSEをそれぞれ求めた。2方式をRMSEにより評価し、提案方式において全被験者で共通に用いることができる推算法を求めた。(著者抄録)

  • サッカー競技におけるリアルタイムバイタルデータ収集システム フィールド実験に寄るパケットロス率測定とシステムUI

    手塚 耕平, 辻岡 哲夫, 原 晋介, 中村 肇, 河端 隆志, 奥畑 宏之, 伊勢 正尚, 渡邊 賢治, 有銘 能亜

    (一社)ITヘルスケア学会 ITヘルスケア   9 ( 1 )   78 - 81   2014.05( ISSN:1881-4808

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    Publishing type:Research paper (conference, symposium, etc.)  

    近年、コーチや監督などの指導者は、運動選手のバイタルデータを用い、スポーツ健康科学に基づいて練習メニューの作成をする傾向にある。我々は無線通信を用いて、チームで行うスポーツ中に選手全員のバイタルデータをリアルタイムに収集することを目指している。チームスポーツとしてサッカーを選択し、フィールド実験により競技中の無線伝送におけるパケットロス率の測定を行った。また、スポーツ健康科学の専門家、サッカー監督、フィジカルコーチなどの指導者からの意見をもとにシステムユーザインターフェースを考案した。本稿では、フィールド実験による測定結果と考案したシステムユーザインターフェースについて報告する。(著者抄録)

  • Real Time Vital Data Collection for Soccer Games – Measurement of Packet Loss Rate and Delay Time in Field Experiments --

    Kouhei Tezuka, Shinsuke Hara, Hajime Nakamura, T. Kawabata, H. Okuhata, M. Ise, K. Watanabe, N. Arime

    Japanese Journal of Applied IT Healthcare   9 ( 1 )   78 - 81   2014.05( ISSN:1881-4808

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  • Water Retention Control for Temperature and Humidity Sensing at High Temperature : A Study on Stable Control Based on Moisture Detection by Partial Electric Capacitance

    MIYAWAKI Nozomi, MORIKAWA Akihiro, TSUJIOKA Tetsuo, MIURA Kohei, MATSUMOTO Taiki, IYOTA Hiroyuki, TANAKA Michiaki, KITAMURA Haruo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   113 ( 465 )   211 - 215   2014.03( ISSN:0913-5685

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    Recently, the superheated steam is widely used in the various fields, for example, drying, sterilization and cooking. In the use of superheated steam, humidity in the processing device is one of the important parameter affecting product quality. So we need the humidity sensor whitch is economic and used at high temperature. To measure humidity at high temperature, it is necessary to control the water retention level of the wick. In this paper, we showed the principle of the moisture sensor and the structure of the humidity sensor. The result shows that it is possible to detect the water retention level by the partial moisturel sensor, and to control water retention level by the moisture sensor.

    CiNii Article

  • BP-2-2 Introduction to the Practical Teaching of Communication Engineering by Experiment and Exercise

    Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2014 ( 2 )   "SS - 31"-"SS-32"   2014.03

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  • BS-5-9 Real-Time Vital Data Collection from Athletes during Exercise : Prototype of the Wireless Vital Sensor Node

    Okamoto Shin, Hara Shinsuke, Tujioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Watanabe Kenji, Ise Masanao, Arime Noah, Okuhata Hiroyuki

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2014 ( 2 )   "S - 183"-"S-184"   2014.03

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  • BS-5-6 Real-time Vital Data Collection System for Soccer Players : Performance Improvement with the Antenna Height Diversity

    Kanda Toui, Tujioka Tetsuo, Hara Shinsuke, Nakamura Hajime, Kawabata Takashi, Ise Masanao, Watanabe Kenji, Arime Noah, Okuhata Hiroyuki

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2014 ( 2 )   "S - 178"-"S-179"   2014.03

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  • BS-5-10 Real-time Vital Data Collection System for Athletes during Exercise : Experimental Measurements of Packet Loss Rate in Relay Transmissions Using 920MHz and 2.4GHz Bands for

    Tezuka Kouhei, Hara Shinsuke, Tujioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Okuhata Hiroyuki, Ise Masanao, Watanabe Kenji, Arime Noah

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2014 ( 2 )   "S - 185"-"S-186"   2014.03

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  • Development of Wide-Range Humidity Sensor Using Wetted Porous Ceramics – Improvement of Accuracy and Practicality in the High Temperature Area --

    Kouhei Miura, Taiki Matsumoto, Shuhei Nomura, Hiroyuki Iyota, Nozomi Miyawaki, M. Tanaka, H. Kitamura

    11A15   2014.03

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  • Water Retention Control for Temperature and Humidity Sensing at High Temperature -- Based on Moisture Detection by Partial Electric Capacitance --

    Nozomi Miyawaki, Akihiro Morikawa, Kohei Miura, Taiki Matsumoto, Hiroyuki iyota, Michiaki Tanaka, Haruo Kitamura

    IEICE Technical Report   113 ( 465 )   211 - 215   2014.03( ISSN:0913-5685

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  • Introduction to the Practical Teaching of Communication Engineering by Experiment and Exercise

    Proceedings of the 2014 IEICE General Conference   通信講演論文集2   31 - 32   2014.03( ISSN:1349-1377

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  • Real-time Vital Data Collection System for Soccer Players - Performance Improvement with the Antenna Height Diversity -

    Shin Okamoto, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, Kenji Watanabe, Noa Arime

    Proceedings of the 2014 IEICE General Conference   通信講演論文集2   178 - 179   2014.03( ISSN:1349-1377

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  • Real-Time Vital Data Collection from Athletes during Exercise - Prototype of the Wireless Vital Sensor Node -

    Shin Okamoto, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

    Proceedings of the 2014 IEICE General Conference   通信講演論文集2   183 - 184   2014.03( ISSN:1349-1377

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  • Real-time Vital Data Collection System for Athletes during Exercise - Experimental Measurements of Packet Loss Rate in Relay Transmissions Using 920MHz and 2.4GHz Bands for Wireless Data Collection in a Soccer Games -

    Kouhei Tezuka, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, K. Watanabe, N. Arime

    Proceedings of the 2014 IEICE General Conference   通信講演論文集2   2014.03( ISSN:1349-1377

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  • Temperature and Humidity Sensing at High Temperature : Remote Measurement Using Wireless Networks in the 2.4GHz Band

    MORIKAWA Akihiro, MIYAWAKI Nozomi, TSUJIOKA Tetsuo, MIURA Kohei, IYOTA Hiroyuki

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Information theory   113 ( 411 )   5 - 9   2014.01( ISSN:0913-5685

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    Recently, the use of superheated steam is expanding in the field of sterilization, drying, heating and cooking. In the use of superheated steam, humidity in the processing device is an important parameter affecting the product quality. And the needs of being able to monitor remotely in real time has increased. In this paper, we propose a remote measurement system using a wireless network, and showed its outline. We did experiment using 920MHz band and 2.4GHz band in actual environment for elucidating the propagation characteristics, if the data is send to outside from the steam convection oven's inside. The result shows that the both frequency bands can communicate without problems because electromagnetic wave leak to the outside through peep window.

    CiNii Article

  • Design of wireless waist-mounted vital sensor node for athletes – Performance evaluation of microcontrollers suitable for signal processing of ECG signal at waist part -

    Shin Okamoto, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

    Proceedings of 2014 IEEE Topical Conference on Biomedical Wireless Technologies, Networks and Sensing Systems (BioWireleSS 2014)   16 - 18   2014.01( ISBN:9781479921829

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  • Design of wireless waist-mounted vital sensor node for athletes - Performance evaluation of microcontrollers suitable for signal processing of ECG signal at waist part - Reviewed International coauthorship

    Shin Okamoto, Tetsuo Tsujioka, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

    Proceedings of 2014 IEEE Topical Conference on Biomedical Wireless Technologies, Networks and Sensing Systems (BioWireleSS 2014)   16 - 18   2014.01

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    DOI: 10.1109/BioWireleSS.2014.6827741

  • Temperature and Humidity Sensing at High Temperature - Remote Measurement Using Wireless Networks in the 2.4GHz Band –

    Akihiro Morikawa, Nozomi Miyawaki, Kohei Miura, Hiroyuki Iyota

    IEICE Technical Report   113 ( 411 )   5 - 9   2014.01( ISSN:0913-5685

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  • P-1 Two do-it-yourself electronics projects of making educational tools for colors : the RGB color mixer and the lighting clock(Abstract for the 2nd Autumn Meeting)

    Sakai Hideki, Iyota Hiroyuki, Tsujioka Tetsuo

    38 ( 6 )   440 - 441   2014

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  • A Study on Water Retention Control for a Humidity Sensor in Superheated Steam Reviewed International coauthorship

    Proceedings of the 14th Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2013)   408   2013.10( ISBN:9789728574154

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  • Development of a Real-Time Vital Data Collection System from Players during a Football Game Reviewed International coauthorship

    Shinsuke Hara, Tetsuo Tsujioka, Toui Kanda, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

    Proceedings of 2013 IEEE 15th International Conference on e-Health Networking, Applications and Services (Healthcom 2013)   387 - 391   2013.10( ISBN:9781467358002

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  • Wide-Range Psychrometric Chart for Improved Utilization of Superheated Steam and Humid Air Reviewed International coauthorship

    Hiroyuki Iyota, Tamotsu Inoue, Junko Yamagata, Tetsuo Tsujioka

    Proceedings of the 14th Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2013)   255   2013.10( ISBN:9789728574154

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  • Real-time Vital Data Collection System for Soccer Players : Comparative Experiment of the Frequency for the System

    Kanda Toui, Tujioka Tetsuo, Hara Shinsuke, Nakamura Hajime, Kawabata Takashi, Ise Masanao, Watanabe Kenji, Arime Noah, Okuhata Hiroyuki

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2013 ( 2 )   "S - 149"-"S-150"   2013.09

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  • A Water Retention Control System for Humidity Sensing at High Temperature : Experimental Evaluation of Control System Using Feed Water Pump

    Tsujioka Tetsuo, Miyawaki Nozomi, Morikawa Akihiro, Matsumoto Taiki, Iyota Hiroyuki, Tanaka Michiaki, Kitamura Haruo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2013 ( 2 )   2013.09

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  • An Experiment of Bearing Estimation Using Sound Localization

    Sasayama Takuya, Minoda Akiko, Oka Ikuo, Tsujioka Tetsuo, Ata Shingo, Watanabe Hitoshi, Thi Thi Zin, Sasano Hiroshi

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2013   2013.09

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  • A Heart Rate Detection Scheme from ECG Signal at Waist Part during Exercise

    Ichikawa Masayuki, Hara Shinsuke, Tujioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Ise Masanao, Watanabe Kenji, Arime Noah, Okuhata Hiroyuki

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2013 ( 2 )   "S - 151"-"S-152"   2013.09

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    CiNii Article

  • A Water Retention Control System for Humidity Sensing at High Temperature - Experimental Evaluation of Control System Using Feed Water Pump -

    Nozomi Miyawaki, Akihiro Morikawa, Taiki Matsumoto, Hiroyuki Iyota, Michiaki Tanaka, Haruo Kitamura

    Proceedings of the 2013 IEICE Society Conference   通信講演論文集2   434   2013.09( ISSN:1349-144X

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  • Real-time Vital Data Collection System for Soccer Players - Comparative Experiment of the Frequency for the System -

    Toui Kanda, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Masanao Ise, Kenji Watanabe, Noa Arime, Hiroyuki Okuhata

    Proceedings of the 2013 IEICE Society Conference   通信講演論文集2   149 - 150   2013.09( ISSN:1349-144X

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  • A Heart Rate Detection Scheme from ECG Signal at Waist Part during Exercise

    Masayuki Ichikawa, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Masanao Ise, Kenji Watanabe, N. Arime, H. Okuhata,

    Proceedings of the 2013 IEICE Society Conference   通信講演論文集2   151 - 152   2013.09( ISSN:1349-144X

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  • An Experiment of Bearing Estimation Using Sound Localization

    Takuya Sasayama, Akiko Minoda, Ikuo Oka, Shingo Ata, Hitoshi Watanabe, Thi Thi Zin, Hiroshi Sasano

    Proceedings of the 2013 IEICE Society Conference   通信講演論文集2   218   2013.09( ISSN:1349-144X

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  • Real-time exploration of a multi-robot rescue system in disaster areas Reviewed International coauthorship

    Hisayoshi Sugiyama, Tetsuo Tsujioka, Masashi Murata

    Advanced Robotics   27 ( 17 )   1313 - 1323   2013.08( ISSN:0169-1864

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    DOI: 10.1080/01691864.2013.838333

  • A Study on Optical Orthogonal Codes with Multiple Bit Rates and Multiple Chip Rates

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   113 ( 114 )   35 - 39   2013.07( ISSN:0913-5685

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    The author has investigated the new optical orthogonal codes (OOCs) with not only multiple chip rates but also multiple bit rate design, for flexible optical subscribers networks. Its code design is based on the BIBD sequence, expanded to the multi-layered procedure. In this paper, some upper bounds of the code size of the multiple bit-rate/chip-rate OOCs are developed. This numerical analysis does not depend on the bit duration time or bit rates. The author also shows an upper bound on the number of subscribers in an optical CDMA network, where all of subscribers are going to make their chip rate faster step by step. The results show that, in such condition, the users allocations are important, to avoid some dips on the code size of the OOCs.

    CiNii Article

  • A Study on Optical Orthogonal Codes with Multiple Bit Rates and Multiple Chip Rates

    IEICE Technical Report   113 ( 114 )   35 - 39   2013.06( ISSN:0913-5685

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  • 運動選手のための腰部装着型心拍数センサの信号処理機能に適したマイクロプロセッサとエネルギー効率比較

    岡本 信, 辻岡 哲夫, 原 晋介, 中村 肇, 河端 隆志, 奥畑 宏之, 伊勢 正尚, 渡邊 賢治, 有銘 能亜

    (一社)ITヘルスケア学会 ITヘルスケア   8 ( 1 )   62 - 65   2013.06( ISSN:1881-4808

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    スポーツ分野において、運動選手のバイタル信号をモニタリングすることによって、指導者が選手の体調を見て指示を出すようなシステムが求められている。これまで、心拍数取得のための腰部における心電波形のセンシングや、複数選手の無線伝送システムが提案されている。バイタル信号のセンシング及びバイタル信号の信号処理、無線伝送のために、選手に装着するセンサが必要となり、そのマイクロプロセッサを選定しなければならない。センサでは、腰部での心拍数導出処理を制限時間内に終わらせなければならず、処理の速いマイクロプロセッサが必要である。一方、マイクロプロセッサの消費エネルギーを小さくすることでセンサの小型化と軽量化を図る必要もある。そこで、本稿では腰部装着型心拍数センサの信号処理機能に適したマイクロプロセッサを三つ候補として挙げ、候補とした三つのマイクロプロセッサに心拍数導出処理を実装し、心拍数導出処理におけるFIRフィルタの次数を変化させながら計算時間を実測した。その結果、心拍数導出処理のFIRフィルタにおける浮動小数点を固定小数点に変化させても心拍数に影響を与えないことを示し、エネルギー効率の観点から最も適したプロセッサを選定した。(著者抄録)

  • サッカー選手のリアルタイムバイタルデータ収集システムのフィールド実験 パケットロス率特性に基づく中継ノード配置の検討

    神田 冬威, 辻岡 哲夫, 原 晋介, 中村 肇, 河端 隆志, 奥畑 宏之, 伊勢 正尚, 渡邊 賢治, 有銘 能亜

    (一社)ITヘルスケア学会 ITヘルスケア   8 ( 1 )   66 - 69   2013.06( ISSN:1881-4808

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    近年、運動選手のバイタルデータを用いてスポーツ健康科学に基づいた練習メニューの改善の検討が活発である。我々は無線通信を用いてチームで行うスポーツ競技中に選手全員のバイタルデータを監督のもとにリアルタイムに収集することを目指している。無線通信では他の選手による通信路の遮断(ブロッキング)が頻繁に発生し、この対策が必要とされる。我々はブロッキングの影響を軽減し、通信品質を向上させるためにフィールドの周囲に中継ノードを配置し、ワンホップダイバーシチ法を用いてバイタルデータを収集するシステムを検討した。22人のサッカー選手に送信機を装着し、サイズの異なるサッカーフィールドで2回のフィールド実験を実施した。6台の中継ノードを2パターンで配置した場合の測定データからパケットロス率特性を求め、バイタルデータ収集に適した中継ノード配置とノード数について検討した。(著者抄録)

  • Energy Efficiency Comparison of Micro-processors suitable for Signal Processing of Heart Rate Detection for Waist-Mounted Vital Sensors for Athletes

    Shin Okamoto, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, Kenji Watanabe, Noa Arime

    Japanese Journal of Applied IT Healthcare   8   62 - 65   2013.06( ISSN:1881-4808

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  • Field Experiments for Vital Data Collection for Soccer Players - A Study on Relay Node Allocations Based on Packet Loss Rate -

    Toui Kanda, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, Kenji Watanabe, Noa Arime

    Japanese Journal of Applied IT Healthcare   8 ( 1 )   66 - 69   2013.06( ISSN:1881-4808

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  • A Water Retention Control System for Humidity Sensing at High Temperature

    TSUJIOKA Tetsuo, Iyota HIROYUKI, OHMORI Masahito, YAMAGATA Junko, TANAKA Michiaki, KITAMURA Haruo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   113 ( 6 )   35 - 41   2013.04( ISSN:0913-5685

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    Nowadays, the temperature and humidity control of superheated steam have become important research area in food drier, pasteurization and food processing. The authors have studied on economic humidity sensor that it is available even at high temperature of more than 200 degrees. The humidity sensor works based on relationship between dry-bulb and wet-bulb temperatures. To measure accurate wet-bulb temperature, water retention control is necessary for keeping temperature near the thermocouple for wet-bulb uniform inside wet material. The sensor's structure should be also well-considered so as to be suitable for water supply functionality. In this paper, porous ceramic is newly developed and used as wet material of the humidity sensor because of high durability against high temperature environment. For automatic water retention control, a prototype of the sensor has a water level sensor inside ceramic and a moisture sensor on the surface of the ceramic. The microcontroller operates a pinch valve to control the amount of water from a tank based on the sensor's outputs. We propose its control algorithm and confirm its validity by transfer function analysis. Moreover, the prototype of the sensor is implemented on the food processing machine and an experimental evaluation of the water retention control is made. We also confirm that the moisture sensor on the surface of the ceramic is effective for detecting reliability of the wet-bulb temperature measurements, by additional experiments.

    CiNii Article

  • A Water Retention Control System for Humidity Sensing at High Temperature

    Hiroyuki Iyota, Masahito Ohmori, Junko Yamagata, Michiaki Tanaka, Haruo Kitamura

    IEICE Technical Report   113 ( 6 )   35 - 41   2013.04( ISSN:0913-5685

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  • A Water Retention Control System for Humidity Sensing at High Temperature

    Hiroyuki Iyota, Masahito Ohmori, Junko Yamagata, Michiaki Tanaka, Haruo Kitamura

    IEICE Technical Report   113 ( 6 )   35 - 41   2013.04

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  • BS-8-2 Obtaining and Measuring The Intensity Distribution of The Photoelectric Pulse Wave on The Waist to Detect The Heart Rate for Atheletes

    Watase Yuki, Hara Shinsuke, Tsuj ioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Okuhata Hiroyuki, Ise Masanao, Watanabe Kenji, Arime Noah

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2013 ( 1 )   "S - 3"-"S-4"   2013.03

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  • B-19-63 Real-time Vital Data Collection System for Athletes during Exercise (3)-Experimental Results on Packet Loss Rate of 920MHz Band Wireless Vital Sensor in a Soccer Game 一

    Tezuka Kouhei, Hara Shinsuke, Okuhata Hiroyuki, Tsujioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Ise Masanao, Watanabe Kenji, Arime Noah

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2013 ( 2 )   2013.03

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  • B-19-62 Real-time Vital Data Collection System for Athletes during Exercise(2)-RSSI Characteristics of a 920MHz/2.4GHz Band Wireless Vital Sensor Node-

    Okawa Keisuke, Hara Shinsuke, Tsujioka Tetsuo, Nakamura Hajime, Kawabata Takashi, Okuhata Hiroyuki, Ise Masanao, Watanabe Kenji, Arime Noah

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2013 ( 2 )   2013.03

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  • B-19-61 Real-time Vital Data Collection System for Athletes during Exercise(1)-A Prototype of Player's Node Using 920MHz/2.4GHz Band-

    Kanda Toui, Hara Shinsuke, Okuhata Hiroyuki, Tsujioka Tetsuo, Ise Masanao, Nakamura Hajime, Kawabata Takashi, Watanabe Kenji, Arime Noah

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2013 ( 2 )   2013.03

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  • Real-time Vital Data Collection System for Athletes during Exercise (3) - Experimental Results on Packet Loss Rate of 920MHz Band Wireless Vital Sensor in a Soccer Game -

    Kouhei Tezuka, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, K. Watanabe, N. Arime

    Proceedings of the 2013 IEICE General Conference   通信講演論文集2   607   2013.03( ISSN:1349-1377

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  • Development of Wide-Range Humidity Sensor Using Wetted Porous Ceramics

    Masahito Ohmori, Hiroyuki Iyota, Junko Yamagata

    1108   2013.03

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  • Development of Wide-Range Humidity Sensor Using Wetted Porous Ceramics

    Hiroyuki Iyota, Taiki Matsumoto, Shuhei Nomura, Junko Yamagata, Michiaki Tanaka, Haruo Kitamura

    1108   2013.03

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  • Obtaining and Measuring the Intensity Distribution of the Photoelectric Pulse Wave on The Waist to Detect the Heart Rate for Athletes

    Proceedings of the 2013 IEICE General Conference   通信講演論文集1   2013.03( ISSN:1349-1377

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  • Real-time Vital Data Collection System for Athletes during Exercise(1)- A Prototype of Player's Node Using 920MHz/2.4GHz Band -

    Toui Kanda, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, Kenji Watanabe, Noa Arime

    Proceedings of the 2013 IEICE General Conference   通信講演論文集2   605   2013.03( ISSN:1349-1377

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  • Real-time Vital Data Collection System for Athletes during Exercise(2)- RSSI Characteristics of a 920MHz/2.4GHz Band Wireless Vital Sensor Node -

    Keisuke Okawa, Shinsuke Hara, Hajime Nakamura, Takashi Kawabata, Hiroyuki Okuhata, Masanao Ise, K. Watanabe, N. Arime

    Proceedings of the 2013 IEICE General Conference   606   2013.03( ISSN:1349-1377

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  • 1107 Development of Humidity Sensor by Wetted Material Temperature Measurement(Water Retention Capacity Control and Continuous Measurement by Capacitance)

    OHMORI Masahito, IYOTA Hiroyuki, TSUJIOKA Tetsuo, YAMAGATA Junko

    The Japan Society of Mechanical Engineers, The Proceedings of Conference of Kansai Branch   2013 ( 0 )   _11 - 17_   2013

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    DOI: 10.1299/jsmekansai.2013.88._11-17_

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  • 1108 Development of Wide-Range Humidity Sensor using Wetted Porous Ceramics

    IYOTA Hiroyuki, MATSUMOTO Taiki, NOMURA Syuhei, TSUJIOKA Tetsuo, TANAKA Michiaki, KITAMURA Haruo

    The Japan Society of Mechanical Engineers, The Proceedings of Conference of Kansai Branch   2013 ( 0 )   _11 - 18_   2013

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    DOI: 10.1299/jsmekansai.2013.88._11-18_

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  • A Study on Code Construction of Optical Orthogonal Codes with Variable Chip Rates Reviewed

    Tetsuo Tsujioka

    Proceedings of 2012 International Symposium on Information Theory and its Applications (ISITA2012)   571 - 575   2012.10

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  • Heart Rate Detection from Waist ECG/PCG Sensors for a Vital Signal Acquisition System for Athletes Reviewed

    Nao Masuoka, Tetsuo Tsujioka

    Proceedings of 2012 International Symposium on Information Theory and its Applications (ISITA2012)   189 - 193   2012.10

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  • Introduction to the Practical Teaching of Error Correcting Codes by C Programming (Invited)

    Proceedings of the 2012 IEICE Society Conference   基礎・境界講演論文集   9 - 10   2012.09( ISSN:1349-144X

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  • AP-1-3 Introduction to the Practical Teaching of Error Correcting Codes by C Programming

    Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2012   "SS - 9"-"SS-10"   2012.08

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  • Experimental Evaluations of Real-time Data Collection in ZigBee Sensor Networks for Athlete Monitoring(1)

    KANDA Toui, OKAMOTO Shin, TSUJIOKA Tetsuo, HARA Shinsuke

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   112 ( 118 )   5 - 10   2012.07( ISSN:0913-5685

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    In recent years, in order to improve the performance of athletes and health management, monitoring of vital data has been investigated. Therefore, attention has been placed on athletes to gather vital data in real time. In addition, those devices are available at the same time have more than one player asked. In this paper, in order to collect vital data of athletes using the ZigBee radio band 2.4GHz, to measure the radiation characteristics of the radio wave when the transmitter was attached to the chest of the athlete first. Transmitter attached to the athlete that can only communicate directly. Attached to the same athlete that can be multi-hop communication transmitter at the same time further. At that time, by varying the transmitter output power, let him play football more than once. Evaluated using a communication delay time distribution and success rate the quality of the communication.

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  • A Study on Variable Chip Rate Optical Orthogonal Codes with Unequal Bit Rates

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   112 ( 118 )   11 - 15   2012.07( ISSN:0913-5685

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    Optical orthogonal codes (OOC) have been studied by many researchers to improve its flexibility such as variable code length and variable code weight. Recently, the author have proposed OOCs with variable chip rates, which can keep the orthogonal properties of the strict OOC even when different chip rate codes are used in an optical access network for multiplexing. The author have studied the random code search, the upper bound of code size, numerical analysis on BER performance, etc. Their consideration, however, was restricted to fixed bit rate in the all codewords, due to basic and simple analysis. In this paper, the variable chip rate OOCs with unequal bit rates are studied. Some modifications of code parameters and considerable conditions are discussed. Some code search results by a computer program are also shown for confirmation of such code existance.

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  • A Study on Variable Chip Rate Optical Orthogonal Codes with Unequal Bit Rates

    IEICE Technical Report   112 ( 118 )   11 - 15   2012.07( ISSN:0913-5685

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  • Experimental Evaluations of Real-time Data Collection in ZigBee Sensor Networks for Athlete Monitoring (1)

    Toui Kanda, Shin Okamoto, Shinsuke

    IEICE Technical Report   112 ( 118 )   5 - 10   2012.07( ISSN:0913-5685

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  • Performance evaluation of adaptive distributed video coding using video capsule endoscopy

    Toshiaki Tanaka

    Japanese Journal of Applied IT Healthcare   7 ( 1 )   38 - 42   2012.05( ISSN:1881-4808

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  • A study on diversity receiving for vital data collection in UHF band mobile sensor networks

    Hiromi Yamamoto, Shinsuke Hara

    7 ( 1 )   25 - 28   2012.05

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  • Performance evaluation of adaptive distributed video coding using video capsule endoscopy

    Toshiaki Tanaka

    7 ( 1 )   38 - 42   2012.05

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  • A study on diversity receiving for vital data collection in UHF band mobile sensor networks

    Hiromi Yamamoto, Shisune Hara

    Japanese Journal of Applied IT Healthcare   7 ( 5 )   25 - 28   2012.05( ISSN:1881-4808

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  • B-8-23 A Study on Searching for Relevant Papers for Researcher's Enhancement and its Imprementation

    Otani Ryusuke, Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2012 ( 2 )   2012.03

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  • B-6-18 A Study on Rate Estimation Scheme Using Multiple Mother Codes

    Tanaka Toshinori, Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2012 ( 2 )   2012.03

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  • B-8-1 Channel Models for Optical Communications via Biomedical Tissues

    Sasaki Yusuke, Oka Ikuo, Tsujioka Tetsuo, Ata Shingo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2012 ( 2 )   2012.03

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  • コンテンツ相関に基づいた開拓文献の提示とその実装

    大谷隆介

    2012年電子情報通信学会総合大会   2012.03

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  • 光通信における生体通信路のモデル化

    佐々木祐輔, 岡育生, 阿多信吾

    2012年電子情報通信学会委総合大会   255   2012.03

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  • 複数のマザーコードを用いたレート推定法の検討

    田中俊矩

    2012年電子情報通信学会総合大会   272   2012.03

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  • Design of Optical Orthogonal Codes with Variable Chip Rate for Flexible Optical CDMA Systems Reviewed

    Tetsuo Tsujioka, Hiromi Yamamoto

    Proceedings of International Conference on Advanced Communication Technology (ICACT 2012)   1156 - 1161   2012.02

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  • A Study on Design of Optical Orthogonal Codes with Variable Chip Rates -- On Expansion of Flexibility for Faster Chip Rate Code Design Based on Pulse Interval Distributions --

    Hiromi Yamamoto

    Proceedings of Symposium on Information Theory and Its Applications   115 - 120   2011.12( ISBN:9784885522604

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  • Performance Evaluation of Distributed Video Coding with No Feedback Channel in Video Capsule Endoscopy

    Toshinori Tanaka, Yasuhiro Fujiwara

    IEICE Technical Rerport   111 ( 301 )   85 - 90   2011.11

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  • Performance Evaluation of Distributed Video Coding with No Feedback Channel in Video Capsule Endoscopy

    TANAKA Toshinori, TSUJIOKA Tetsuo, FUJIWARA Yasuhiro

    111 ( 301 )   85 - 90   2011.10

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  • モバイルセンサーネットワークにおけるデータ収集(2) ~ワンホップダイバーシチ法の基礎検討~

    山本裕美, 原晋介

    2011年電子情報通信学会ソサイエティ大会(通信)   65 - 66   2011.09

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  • 運動選手のための心拍数算出法の検討 ~スレッショルド法とスペクトル法の比較~

    益岡奈央

    2011年電子情報通信学会ソサイエティ大会(通信)   65 - 66   2011.09

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  • BS-7-3 Study on Heart Rate Detection Schemes for Sports Players : A Comparison between Threshold Scheme and Spectrum Scheme

    Masuoka Nao, Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2011 ( 1 )   "S - 63"-"S-64"   2011.08

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  • BS-7-4 Data Gathering Methods in a Mobile Sensor Network (2) : A Study on One-hop Diversity Scheme

    Yamamoto Hiromi, Tsujioka Tetsuo, Hara Shinsuke

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2011 ( 1 )   "S - 65"-"S-66"   2011.08

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  • Development of a Triage Engine Enabling Behavior Recognition and Lethal Arrhythmia Detection for Remote Health Care System Reviewed

    Hiroto Sugano, Shinsuke Hara, Tetsuo Tsujioka, Tadayuki Inoue, Shigeyoshi Nakajima, Takaaki Kozaki, Hajime Namkamura, Kazuhide Takeuchi

    Proceedings of 33rd Annual International IEEE EMBS Conference (EMBC2011)   2160 - 2163   2011.08

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  • 不整脈検出と行動認識を可能にしたトリアージエンジンの開発

    菅野宏斗, 原晋介, 中島重義, 井上忠幸, 小崎隆明, 竹内一秀, 中村肇

    2011年度第2回医療情報通信技術研究会資料集   2011.07

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  • Experimental Evaluation of Infrared Data Transmission via Biomedical Tissue Using Infrared Camera Reviewed

    572 - 573   2011.07

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  • A Study on Design of Optical Orthogonal Codes with Variable Chip Rates - Some Issues Related to Asymmetry of Pulse Interval Distributions - (Invited Talk)

    Hiromi Yamamoto

    IEICE Technical Report   111 ( 7 )   29 - 34   2011.07

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  • Data Gathering Methods in a Mobile Sensor Network (1) - One-hop Diversity Scheme -

    Hiromi Yamamoto, Shinsuke Hara

    IEICE Technical Report   111 ( 117 )   67 - 72   2011.07

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  • Experimental Performance Evaluation in Vivo Communication Using Near-Infrared

    Shinji Hashimoto, Ikuo Oka

    IEICE Technical Report   111 ( 117 )   85 - 89   2011.07

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  • Data Gathering Methods in a Mobile Sensor Network (1) : One-hop Diversity Scheme

    YAMAMOTO Hiromi, TSUJIOKA Tetsuo, HARA Shinsuke

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   111 ( 117 )   67 - 72   2011.06( ISSN:09135685

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    This paper considers a diversity receiver system for one-hop vital data gathering in a mobile sensor network, which is established by transmitters put on players and receivers placed around a sport field. We carried out experiments using various types of transceivers, and from the experimental results, we demonstrate their antenna directivities and communication ranges, which are affected by the position and heading-direction of the players. Finally, we show the placements and number of receivers required to meet an acceptable transmission quality.

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  • Experimental Performance Evaluation in Vivo Communications Using Near-Infrared

    HASHIMOTO Shinji, TSUJIOKA Tetsuo, OKA Ikuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   111 ( 117 )   85 - 89   2011.06( ISSN:09135685

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    Recently, the less-invasive medical treatment of reducing the patient burden is required in a site of the medical treatment. And, especially the development of the micro robot for the medical treatment is paid to attention recently. We apply optical wireless communication to vivo communication because optical frequency is not interfered with medical equipment. In this paper, to examine the optical communication in vivo, first of all, we make the transmitter and receiver circuit for trial product. We use infrared LED, photo diode (PD) and pork as transmitter, receiver, and biomedical tissue respectively, and we conduct communication experiment using them. We assume on-off keying (OOK) modulation in this paper, and we manufacture Bit Error Rate Tester (BERT), which can measure the bit error rate in real time, by use of FPGA. And we evaluate the bit error rate experimentally in vivo communication.

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  • A Study on Design of Optical Orthogonal Codes with Variable Chip Rates : Some Issues Related to Asymmetry of Pulse Interval Distributions Invited

    TSUJIOKA Tetsuo, YAMAMOTO Hiromi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   111 ( 117 )   29 - 34   2011.06( ISSN:09135685

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    Optical orthogonal codes (OOC) have been studied by many researchers to increase its flexibility such as variable code length and variable code weight. Recently, the authors have proposed OOCs with variable chip rates, which can keep orthogonal properties of strict OOC even when different chip rate codes are used in the same optical access network for multiplexing in a fiber. The authors studies the random code search, the upper bound of code size, BER performance analysis based on pulse density and tight calculations, and so on. In this paper, the OOCs with variable chip rates are reviewed. For an algebraic code construction, some approach of code design using the BIBD sequences is introduced. Some issues related to asymmetry of pulse interval distributions are discussed.

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  • バイタルセンサを用いたユビキタス健康監視のための3軸加速度データからの行動分類解析手法の比較

    小崎隆明, 中島重義, 原晋介, 菅野宏斗, 井上忠幸, 中村肇, 竹内一秀

    ITヘルスケア学会第5回年次学術大会抄録集   6 ( 1 )   73 - 74   2011.06

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  • Performance Analysis of Optical Orthogonal Codes with Variable Chip Rates Reviewed

    Tetsuo Tsujioka, Hiromi Yamamoto

    Proceedings of IEEE International Conference on Communications (ICC 2011)   2011.06

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  • トリアージエンジンの開発に向けたワイヤレス生体センサの不整脈検出評価

    菅野宏斗, 原晋介, 中島重義, 小崎隆明, 井上忠幸, 中村肇, 竹内一秀

    ITヘルスケア学会第5回年次学術大会抄録集   6 ( 1 )   69 - 72   2011.06

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  • Study on Vital Data Acquisition Schemes for Sports Players : Heart Rate Measurements by Electrocardiograph, Phonocardiograph and Blood Flow Variation

    MASUOKA Nao, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   111 ( 51 )   47 - 52   2011.05( ISSN:09135685

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    Recently, in order to figure out sports player's state, his/her supervisor/coach requests to measure sports player's vitaldata data like heart rate and momentum during training period of the sports. To understand sports player's state more accurately, combined use of several kinds of vital data is efficient. However, wearing the sensors at two or more places provides heavy load onto players, and it causes the obstacle to the practice. In this paper, to measure heart rate and momentum at the same place, we've designed and built a prototype circuit which can capture and record ECG signal, PCG signal and blood flow variation signal at the same time. And, we've done an experiment of heart rate accession on waist part and tried to confirm feasibility of hart rate detection at waist part during sports training. The experimentally measured data of player at rest have been compared to resut of a conventional heart rate monitor. The coincidence ratio between prototype and conventional results is about 90 percent. The result show that accession of heart rate on waist part at rest is available.

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  • A Study on Improvements of Rate Estimation and Reduction of Computational Complexity for Rate Compatible Punctured LDPC Codes

    Nao Masuoka

    IEICE Technical Report   111 ( 51 )   47 - 52   2011.05

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  • A Study on Improvements of Rate Estimation and Reduction of Computational Complexity for Rate Compatible Punctured LDPC Codes

    TSUJIOKA Tetsuo, YOSHIMURA Satoshi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   111 ( 10 )   51 - 56   2011.04( ISSN:09135685

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    Rate compatible punctured LDPC codes (RCP-LDPC codes) has powerful error correcting capability and flexible coding rate property. Their recent application is not limitted to channel coding but source coding like the distributed video coding (DVC). The authors have investigated rate estimation schemes for RCP-LDPC codes, where evaluation values for rate decisions were defined as the average absolute values of posteriori LLR, Ei, in sum-product decoders. In this paper, the authors try to improve the rate estimation performance. A new evaluation value based on likelihood function of Ei is proposed, and its performance is evaluated. Moreover, we consider successive / bulk rate estimation to reduce computational complexity, where contiguous multiple code- words are evaluated with candidate code sequences instead of candidate codes. The computer simulation results show the proposed evaluation value provides good rate estimation performance compared to conventional schemes under pre-learning requirements. When pre-learning is not permitted, the results show that the rate estimation with multiple codewords is effective. Some relations between the computational complexity and rate estimation gain are also discussed.

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  • ABS-1-4 Detection of Lethal Arrhythmia Using Wireless Vital Sensor

    Sugano Hiroto, Hara Shinsuke, Tsujioka Tetsuo, Nakajima Shigeyoshi, Inoue Tadayuki, Kozaki Takaaki, Nakamura Hajime, Takeuchi Kazuhide

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2011 ( 1 )   "S - 66"-"S-67"   2011.02

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  • A Study on Design of Optical Orthogonal Codes with Multiple Chip Rates : A Trial Design Based on the BIBD Technique

    TSUJIOKA Tetsuo, YAMAMOTO Hiromi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   110 ( 441 )   91 - 95   2011.02( ISSN:09135685

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    This paper studies a design of optical orthogonal codes (OOC) with multiple chip rates. In the previous works, the authors proposed a concept of the OOC with multiple chip rates which can keep orthogonal properties of the OOC even when different chip rate codewords are used in an optical access network. It was obtained that feasibility of such OOC and its performance by computer code search and numerical analysis. In this paper, the authors report some design procedures of the multiple chip rate OOC based on the BIBD method known as an algebraic design method. We discuss its utilization, flexibility, orthogonality and effectiveness of the obtained codes.

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  • Theoretical Analysis of BER Performance of Optical Orthogonal Codes with Multiple Chip Rates

    YAMAMOTO Hiromi, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   110 ( 269 )   49 - 54   2010.11( ISSN:09135685

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    This paper considers a theoretical analysis of optical orthogonal codes(OOCs) with multiple chip rates. In the previous studies on OOCs, the assumption of design with a common chip rate is required at all users in a network, then they must have fast optical transmitters and receivers which can detect short pulses even at some low-end users. To solve this problem, we proposed OOCs with multiple chip rates. This code satisfies the orthogonal property of the OOCs in spite of different chip rates. This paper shows the theoretical upper bound of bit error rate based on observation from a multinomial distribution where chip synchronization is assumed. In addition, we show the exact bit error rate analysis calculated strictly by probability density of received optical interferences pass through a chip gate after correlator at an expected user's receiver in asynchronous consideration. Finally, the computer simulation results confirm the validity of the theoretical analysis by comparison.

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  • BS-10-7 Detection of Lethal Arrhythmias for Practical Application of the Wireless Vital Sensors

    Sugano Hiroto, Hara Shinsuke, Tsujioka Tetsuo, Nakajima Shigeyoshi, Inoue Tadayuki, Kozaki Takaaki, Nakamura Hajime, Takeuchi Kazuhide

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2010 ( 1 )   "S - 67"-"S-68"   2010.08

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  • AP-1-1 Introduction to Submission and Digital Library Systems for the IEICE Technical Committees

    Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2010   "SS - 5"-"SS-6"   2010.08

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  • A Study on a Rate Estimation Error Detection Scheme for Rate Compatible Punctured Turbo Codes

    HASHIMOTO Shinji, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   110 ( 117 )   91 - 96   2010.07( ISSN:09135685

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    Recently, rate compatible codes based on turbo codes and low density parity check (LDPC) codes have much attention. These codes can provide codewords with various error tolerances easily and flexibly and still potentially have powerful error correcting capabilities. The authors have studied the rate estimation scheme for rate compatible punctured turbo (RCPT) codes based on likelihood information. In the research a propagation of rate estimation errors is one of problems to be solved. Thus, code word synchronization is broken after a mis-estimation of the code rate. In this paper, as a method of preventing misalignment of estimation error propagation, we evaluate whether estimation is correct by a reliableness of sum of a posteriori LLR, which is new evaluation value based on rate estimation. Also, we entertain about procedure for determining of threshold, which is to judge that rate estimation is error by the reliableness.

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  • Multi-Robot Networks for Victim Detection including Power Supply Robots

    KOBAYASHI Motoki, SUGIYAMA Hisayoshi, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   110 ( 117 )   103 - 108   2010.07( ISSN:09135685

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    A method is proposed for multi-robot network system for resucue operations in disaster areas. A victim detection system is one of multi-robot network system. Battery cost is one of multi-robot network system problem. In this paper, we propose power-supply robot for a victim detection system to solve this problem. The computer simulation results show that we can confirme improvement of search area and trade-off between search area and total power consumption.

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  • Distributed Video Coding Using Adaptive Rate Selection and Estimation Based on Motion-Compensated Prediction Error

    TANAKA Toshinori, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   110 ( 117 )   97 - 102   2010.07( ISSN:09135685

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    Distributed video coding(DVC) has much attention in video coding because of its low encoding complexity. In this paper, we propose a DVC scheme using rate-compatible punctured LDPC(RCP-LDPC) codes and its rate estimation scheme. The proposed DVC scheme has advantages of no feedback channel and adaptive rate selection based on motion-compensated prediction error at the transmitter. By computer simulations, it is obtained that the proposed scheme has effective performance of the average PSNR and reduced total coded bits for some test video data compared to the conventional non adaptive scheme.

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  • バイタルセンサの臨床データ取得とそのユビキタス健康監視への応用 ホルター心電計を用いた比較臨床試験とダイバーシティ技術導入へ向けての基礎研究

    井上 忠幸, 菅野 宏斗, 小崎 隆明, 辻岡 哲夫, 中島 重義, 原 晋介, 中村 肇, 竹内 一秀

    (一社)ITヘルスケア学会 ITヘルスケア   5 ( 1 )   54 - 58   2010.05( ISSN:1881-4808

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    現在の日本の医療現場では、高齢者の人口増加、医師数および病床数の不足や独居老人の孤独死も大きな社会問題として取り上げられている。在宅医療・看護において、医療施設外からでも市民の健康状態を把握することが重要な課題として位置づけされている。今回我々はワイヤレス生体センサ(以下バイタルセンサ)を用いて心電データと3軸加速度データを収集することで、病状や日常の活動状況を把握し、医療従事者の負担を少なくすることを目的とした研究をしている。既存の医療機器として利用されているホルター心電計との比較臨床試験を実施し、その結果(健常者67名 男性30名、女性37名)から、バイタルセンサが健康監視のために十分な性能を有していることを明らかにした。またバイタルセンサのデータ受信率を向上させるため、大阪市大病院の病室を利用してダイバーシティ技術性能評価を行ったので、これらの研究結果も含めて報告する。(著者抄録)

  • B-20-30 Clinical Test for Ubiquitous Health Care Monitoring Using Wireless Vital Sensor : Comparison with Holter ECG

    Sugano Hiroto, Inoue Tadayuki, Tsujioka Tetsuo, Nakajima Shigeyoshi, Hara Shinsuke, Nakamura Hajime, Takeuchi Kazuhide

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2010 ( 2 )   2010.03

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  • B-20-31 Clinical Test for Ubiquitous Health Care Monitoring Using Wireless Vital Sensor : Estimation of Bodily Movements from 3D Acceleration Data

    Kozaki Takaaki, Nakajima Shigeyoshi, Inoue Tadayuki, Tsujioka Tetsuo, Hara Shinsuke, Nakamura Hajime, Takeuchi Kazuhide

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2010 ( 2 )   2010.03

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  • The Trial Service Using the Technical Report Online System

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 436 )   105 - 111   2010.02( ISSN:09135685

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    From November 2008 to September 2010, a trial service of the online technical report has been provided in the IEICE communication society. The trial members have received download the service for 15 months, where it mainly aims to provide additional download functions to reservation users of the technical reports. The web database system named the IEICE technical report online system was newly developped for the service, and runs with the submission system for providing download icons on advance programs/search results/paper's information pages. In this paper, we report an overview of the trial service and system concept with specifications of the technical report online system.

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  • B-8-30 A Measurement of Channel Characteristics inside Biomedical Tissues Using an Infrared Camera

    Sasaki Yusuke, Oka Ikuo, Tsujioka Tetsuo, Ata Shingo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   178   2010

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  • Performance Evaluation of Optical Orthogonal Codes with Multiple Chip Rate

    Yamamoto Hiromi, Mizutani Ayataka, Tsujioka Tetsuo

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. IT, 情報理論   109 ( 357 )   53 - 58   2009.12( ISSN:09135685

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    This paper considers a design of optical orthogonal codes (OOCs) with multiple chip rate. In the previous studies on OOCs have been performed on non-uniform code length and/or weight distributions. They enable to provide different transmission rates and bit error properties in optical CDMA networks. However, the assumption of the same chip rate at each level cause necessity that all users belong different level must have optical transmitter and receiver which can detect short pulse. Therefore, there are economical issues. We propose OOCs with multiple chip rate and evaluate bit error rate characteristics and show some results of random code search by a computer program on such OOC.

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  • Rate Estimation Scheme for Rate-Compatible Punctured LDPC Codes

    Kita Kenji, Tsujioka Tetsuo

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. IT, 情報理論   109 ( 357 )   1 - 6   2009.12( ISSN:09135685

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    Recently, rate-compatible (RC) LDPC codes are attractive research topics on complexity-constrained systems that need variations of error correction performance. We have studied rate estimation schemes for rate-compatible quasi-cyclic (QC) LDPC codes. They enable good estimation of code rates used at the transmitter without additional information about code rates. However, QC-LDPC codes are unsuitable for flexible systems because it is difficult to achieve decoding performance appropriate to each code rate. This paper proposes a rate estimation scheme for rate-compatible punctured LDPC codes which can achieve required performance and generate various code rates. Simulation results show suitable parameters of puncturing pattern, evaluation value and iteration number for the rate estimation. It is obtained that good performance of the proposed scheme can be achieved compared to conventional schemes.

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  • A Design on Rate-Compatible Punctured LDPC Codes for Blind Rate Estimation

    KITA Kenji, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 266 )   39 - 45   2009.10( ISSN:09135685

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    Recently, rate-compatible codes are attractive research topics on time-varying channel coding. We have proposed blind rate estimation schemes for rate-compatible codes. They could enable good estimation of code rates used at the transmitter without information about code rates. We have showed good performance of these schemes and suppression of decline in throughput by computer simulations. This paper proposes code design suitable for blind rate estimation. Rate-compatible punctured LDPC codes are evaluated by computer simulation. The results show the puncturing pattern suitable for blind rate estimation can be found.

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  • On a Design of Optical Orthogonal Codes with Multiple Chip Rate

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 266 )   33 - 38   2009.10( ISSN:09135685

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    This paper considers a design of optical orthogonal codes (OOC) with multiple chip rate. In the previous works, many types of OOCs have been proposed and evaluated, such as the extended OOCs with non-uniform code length and weight distributions. They could provide different qualities of bit rate and error performances for multimedia services. However, even the low level users must have expensive receivers to detect ultra short optical pulses, because their code designs have been based on the same chip rate. In this paper, OOC with multiple chip rates is proposed to solve such economical problems. We discuss its flexibility in BER performance and show some results of random code search by a computer program.

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  • A Study on FHSS Overlaid Multiplexing in WDM Networks

    MIZUTANI Ayataka, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 116 )   17 - 22   2009.06( ISSN:09135685

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    In late years, with the increase of the quantity of data by the development of the communication service, the optical fiber communications technology that large-capacity communication is possible is put to practical use. In addition, increase of transmission capacity is necessary I am stable, and to be able to offer various service to a user. In the core network linking the carrier in particular, WDM (Wavelength Division Multiplex) ttracts attention. Two methods are adopted to transmit the control signal of the light router in an optical communication network. The first is a method to send with a common line communication network. It costs expense to provide equipment in a network to transmit a control signal by this method. It is a method the second assigns a control signal to the wavelength of the one of the WDM as OSC (Optical Supervisory Channel), and to transmit. However, waste produces it at a point of the transmission efficiency because the transmission speed of the control signal channel is several hundredMbps at most when I Assignone channel to a control signal. In this study, I Examined that I did excellence to a WDM signal by scattering a control signal in FH for numerical analysis.

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  • A Note on Designing the Technical Report Online System Invited

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 116 )   71 - 78   2009.06( ISSN:09135685

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    From November 2008, a trial service of the online technical report have been provided for the IEICE communication society. The main target of coverage is for the reservation members of the technical report. Of course, the committee members and authors are in the target. The service have been managed by using the IEICE technical report online system, developed from May to October in 2008. In this paper, we report the system concept, the design process and the related notes on the system.

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  • A Study on Improvement of Rate Estimation Scheme for Rate Compatible LDPC Codes

    YOSHIMURA Satoshi, KITA Kenji, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   109 ( 4 )   61 - 68   2009.04( ISSN:09135685

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    Recently, rate compatible LDPC (RC-LDPC) codes are attractive research topics on channel coding. We have investigated rate estimation schemes for RC-LDPC codes. It enables a technique to estimate code rates used at the transmitter without information about code rates. In this paper, we focus on the problem of fairness for improvement of rate estimation performance. The problem of fairness is that rate estimation performance of high rate codes dominates total performance because high rate codes have lower performance. In order to solve the problem, we propose a new evaluation value based on probability density distribution of evalution value, and evaluate the performance of the proposed method by computer simulations. By comparing the conventional method, the results show that the proposed method is effective in terms of total performance.

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  • A Common Coordinates/Heading Direction Generation Method for a Robot Swarm with Only RSSI-Based Ranging Reviewed International coauthorship

    Hara Shinsuke, Ishimoto Tatsuya, Kitano Masaya, Tsujioka Tetsuo

    EURASIP Journal on Advances in Signal Processing   2009   1 - 11   2009.03( ISSN:1687-6180

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    DOI: 10.1155/2009/434597

  • Simulation and Noise Analysis of Multimedia Transmission in Optical CDMA Computer Networks

    ITB Journal on ICT   3C ( 2 )   89 - 108   2009

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  • Security Evaluation of Optical CDMA System against Statistical Code Detection

    Yokohama Tomohiro, 辻岡 哲夫

    大阪市立大学 Memoirs of the Faculty of Engineering, Osaka City University   49   13 - 17   2008.12( ISSN:00786659

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  • A novel design of reconfigurable wavelength-time optical codes to enhance security in optical CDMA networks Reviewed

    Nasaruddin, Tsujioka Tetsuo

    IEICE Transactions on Communications   E91B ( 8 )   2516 - 2524   2008.08( ISSN:0916-8516

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    An optical CDMA (OCDMA) system is a flexible technology for future broadband multiple access networks. A secure OCDMA network in broadband optical access technologies is also becoming an issue of great importance. In this paper, we propose novel reconfigurable wavelength-time (W-T) optical codes that lead to secure transmission in OCDMA networks. The proposed W-T optical codes are constructed by using quasigroups (QGs) for wavelength hopping and one-dimensional optical orthogonal codes (OOCs) for time spreading; we call them QGs/OOCs. Both QGs and OOCs are randomly generated by a computer search to ensure that an eavesdropper could not improve its interception performance by making use of the coding structure. Then, the proposed reconfigurable QGs/OOCs can provide more codewords, and many different code set patterns, which differ in both wavelength and time positions for given code parameters. Moreover, the bit error probability of the proposed codes is analyzed numerically. To realize the proposed codes, a secure system is proposed by employing reconfigurable encoders/decoders based on array waveguide gratings (AWGs), which allow the users to change their codeword patterns to protect against eavesdropping. Finally, the probability of breaking a certain codeword in the proposed system is evaluated analytically. The results show that the proposed codes and system can provide a large codeword pattern, and decrease the probability of breaking a certain codeword, to enhance OCDMA network security.

    DOI: 10.1093/ietcom/e91-b.8.2516

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  • A Comparison of Retransmission Schemes for Improving Blind Rate Estimation Performance for Rate Compatible LDPC Codes

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   108 ( 135 )   91 - 95   2008.07( ISSN:09135685

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    Rate-compatible LDPC (RC-LDPC) codes have a great attention because of their flexibility and easy to provide various BER performances by changing the number of parity blocks. It is suitable for adaptive coding transmission, and it has many advantages like efficient retransmissions with the incremental redundancy technique for hybrid-ARQ schemes. The authors have been considered several blind estimation techniques based on likelihood information of the sum-product decoder and achieved the performance analysis. In this paper, the authors made a comparison of some retransmission schemes for improving blind rate estimation performance for RC-LDPC codes.

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  • Design of strict variable-weight optical orthogonal codes for differentiated quality of service in optical CDMA networks Reviewed International coauthorship

    Nasaruddin, Tsujioka Tetsuo

    Computer Networks, Elsevier   52 ( 10 )   2077 - 2086   2008.07( ISSN:1389-1286

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    DOI: 10.1016/j.comnet.2008.02.014

  • RSSI Based Motion Control for Mobile Sensor Robots (1) Development of the Prototype Robots

    KITANO Masaya, ISHIMOTO Tatsuya, TSUJIOKA Tetsuo, HARA Shinsuke

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   108 ( 43 )   19 - 23   2008.05( ISSN:09135685

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    We proposed a method to enable motion control only with wireless communication tool for mobile sensor robots which are equipped with no positioning sensors. In this paper, we show the detail on the communication/motion control protocols and demonstrate the structure of the developed prototype robot.

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  • RSSI Based Motion Control for Mobile Sensor Robots (2) Experiment with the Prototype Robots

    ISHIMOTO Tatsuya, KITANO Masaya, TSUJIOKA Tetsuo, HARA Shinsuke

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   108 ( 43 )   25 - 30   2008.05( ISSN:09135685

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    For mobile sensor robots without specific ranging sensors, we have proposed a method to enable their motion control only with the ranging technique realized in the wireless communication tool to network them. The method generates a common coordinate system among robots and notifies each robots of its heading direction in the coordinate system (common coordinate system generation/heading direction estimation). This paper outlines the principle of the common coordinate system generation/heading direction estimation and shows the experimental results with the prototype robots developed with the implementation of the motion control algorithm.

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  • Design of reconfigurable multiweight wavelength-time optical codes for secure multimedia optical CDMA networks Reviewed International coauthorship

    Nasaruddin, and Tetsuo Tsujioka

    Proceedings of the 2008 IEEE International Conference on Communications (ICC 2008)   5437 - 5442   2008.05

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    DOI: 10.1109/ICC.2008.1019

  • A Study on Rate Estimation Scheme for Weighted Bit-Flipping Decoding of Rate Compatible LDPC Codes

    KITA Kenji, TUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   108 ( 16 )   1 - 6   2008.04( ISSN:09135685

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    This paper considers a rate estimation scheme for Rate Compatible LDPC (RC-LDPC) codes. The authors have investigated some estimation schemes for RC-LDPC even through there is no side-information about code rates used at the transmitter. The previous schemes were based on Log-Likelihood Ratio (LLR) of Sum-Product decoders at the receiver. Because of too much computational complexity, more simple estimation schemes are expected to be developed. For the purpose of this, we focused on a simpler decoding scheme, Weighted Bit-Flipping (WBF) decoding which had been much attention by many reseachers recently. In this paper, a new rate estimation scheme is proposed and evaluated. Simulation results show that the proposed scheme has advantages of much effectiveness and potential estimating code rates.

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  • BS-11-3 CHAIN NETOWRK CONFIGURATION BY ROBOTS TO EXPLORE DISTANT SPACES

    Sugiyama Hisayoshi, Tsujioka Tetsuo, Murata Masashi

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2008 ( 2 )   "S - 139"-"S-140"   2008.03

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  • B-8-21 A Rate Estimation Scheme for Adaptive Coding Using Rate Compatible Punctured Turbo Codes

    Gotoh Wataru, Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2008 ( 2 )   2008.03

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  • B-20-59 Development of Prototype Wirelessly Networked Robots System

    Kitano Masaya, Ishimoto Tatsuya, Tsujioka Tetsuo, Hara Shinsuke

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2008 ( 2 )   2008.03

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  • Performance Analysis of Adaptive Hybrid-ARQ Scheme Based on Rate Estimation Technique Using Rate-Compatible LDPC Codes

    TSUJIOKA Tetsuo, TSUJI Mami

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   107 ( 463 )   79 - 83   2008.01( ISSN:09135685

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    Rate-compatible LDPC (RC-LDPC) codes have a great attention because of their flexibility and easy to provide various performances by changing the number of parity blocks. The authors have been considered several blind estimation techniques based on likelihood information of the sum-product decoder and achieved the performance analysis. In this paper, the authors made performance evaluation on throughput of rate estimation where transmission code is selected adaptively to maximize throughput in Hybrid-ARQ scheme. The performance analysis is made by computer simulations. RC-LDPC codes with information bits of 768, 1536, 3072 and 6144 are used for evaluation. It can be obtained that the proposed rate estimation has good performance where Hybrid-ARQ scheme with incremental redundancy technique is employed.

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  • Design of Strict Variable-Weight Optical Orthogonal Codes for Differentiated Quality of Service in Optical CDMA Networks

    Computer Networks, Elsevier   52 ( 10 )   2077 - 2086   2008

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  • A Novel Design of Reconfigurable Wavelength-Time Optical Codes to Enhance Security in Optical CDMA Networks

    IEICE Trans. Commun.   E91-B ( 8 )   2516 - 2524   2008

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  • Performance Evaluation of Blind Estimation Scheme for Rate Compatible Punctured Turbo Codes Based on Likelihood Information

    GOTOH Wataru, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   107 ( 379 )   63 - 70   2007.12( ISSN:09135685

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    Recently, rate compatible codes using turbo codes and low density parity check (LDPC) codes have attracted attention. These codes can provide codewords with various error tolerances easily and flexibly, still having potentially powerfull error correcting abilities. So, by selecting optimum code rate for channel state at the transmitter, we can improve transmission efficiency. However, in this system, the receiver has possibilities of decoding with incorrect rate because of no knowledge of the rate selected at the transmitter. Indeed, use of side information for notification of the rate is one of easy ways to be considered. But this way increases redundancy and causes degradation of transmission efficiency. Therefore the scheme that the receiver can know the rate of transmitted codeword without side information is necessary. In this paper, we evaluate the performance of a blind estimation scheme based on likelihood information for Rate Compatible Punctured Turbo (RCPT) codes. We consider the scheme using side information encoded by BCH codes as comparison scheme. By computer simulations, we compare these schemes and show the effectiveness of the blind estimation scheme based on likelihood information.

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  • A study on hybrid-ARQ system with blind rate estimation of RC-LDPC codes Reviewed

    Mami Tsuji, and Tetsuo Tsujioka

    Proceedings of Taiwan-Japan Joint Conference on Communications Technologies (TJC 2007)   46 - 50   2007.11

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  • Multiple-length variable-weight optical orthogonal codes for supporting multirate multimedia services in optical CDMA networks Reviewed

    Nasaruddin, Tsujioka Tetsuo

    IEICE Transactions on Communications   E90B ( 8 )   1968 - 1978   2007.08( ISSN:0916-8516

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    DOI: 10.1093/ietcom/e90-b.8.1968

  • A code reconfiguration design for two dimensional OCDMA system to enhance security Reviewed International coauthorship

    Nasaruddin, and Tetsuo Tsujioka

    Proceedings of the Fourth International Conference on Wireless and Optical Communications Networks (WOCN 2007)   2007.07

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    DOI: 10.1109/WOCN.2007.4284207

  • A Study on Secure Optical Orthogonal Codes

    TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   107 ( 18 )   55 - 59   2007.04( ISSN:09135685

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    Optical Orthogonal Codes (OOC) have been investigated as an important technology to achieve Optical CDMA Systems. They has a problem of weakness against eavesdropping. To overcome this problem, cryptology, code shift keying modulation and frequent code change, that is, code reconfiguration are expected. Especially, the code reconfiguration technique can be performed at physical level, so it will be suitable for high speed communications. In this paper, we propose design of optical orthogonal codes suitable for the code reconfiguration technique. BER performance of the proposed codes is obtained.

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  • Performance Evaluation of Multiple-Length Variable-Weight Optical Orthogonal Codes Based on Constructional Design

    TSUJIOKA Tetsuo, Nasaruddin

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   106 ( 450 )   19 - 23   2007.01( ISSN:09135685

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    We have been investigated a new class of optical orthogonal codes (OOC); multiple length variable weight OOC (MLVW-OOC). The MLVW-OOC can be constructed by means of partially computer search and some algebraic methods. In addition to easy design, it has advantage of a good multiple-access interference (MAI) property. In this paper, we evaluate its BER performance by computer simulations. The results show that the MLVW-OOC can achieve different rate and different quality to the users.

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  • Multiple-Length Variable-Weight Optical Orthogonal Codes for Supporting Multirate Multimedia Services in Optical CDMA Networks

    IEICE Trans. Commun.   E90-B ( 8 )   1968 - 1978   2007

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  • Rate Estimation Techniques for Rate-Compatible LDPC Codes Reviewed

    YOSHIKAWA Tomoyasu, TSUJIOKA Tetsuo, SUGIYAMA Hisayoshi, HARA Shinsuke, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, The IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Japanese edition) A   89 ( 12 )   1175 - 1184   2006.12( ISSN:09135707

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  • Rate Estimation Techniques for Rate-Compatible LDPC Codes Reviewed

    Tomoyasu Yoshikawa, Tetsuo Tsujioka, Hisayoshi Sugiyama, Shinsuke Hara, Masashi Murata

    J89-A ( 12 )   1175 - 1184   2006.12

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  • Code Search and Performance Evaluation of Multidimensional Turbo Trellis-Coded Modulation Schemes Using EXIT Chart Method

    GOTOH Wataru, TSUJIOKA Tetsuo

    29 ( 1 )   53 - 56   2006.11

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  • Rate Estimation Techniques of Rate-Compatible LDPC Codes for Hybrid-ARQ

    TSUJI Mami, YOSHIKAWA Tomoyasu, TSUJIOKA Tetsuo

    29 ( 2 )   509 - 512   2006.11

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  • Multiple-length variable-weight optical orthogonal codes for multi-rate multi-quality optical CDMA systems Reviewed International coauthorship

    Nasaruddin, and Tetsuo Tsujioka

    Proceedings of GLOBECOM 2006   2006.11

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    DOI: 10.1109/GLOCOM.2006.364

  • A Blind Estimation Scheme of RC-LDPC Codes for Hybrid-ARQ System

    TSUJIOKA Tetsuo, TSUJI Mami

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   106 ( 304 )   23 - 27   2006.10( ISSN:09135685

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    Rate-compatible LDPC (RC-LDPC) codes have a great attention because of their flexibility and easy to provide various performances by changing the number of parity blocks. The authors have been considered several blind estimation techniques based on likelihood information of the sum-product decoder and achieved the performance analysis. However, in practical systems, a reliable transmission must be required. Then, we have to consider application to retransmission scheme with the blind estimation techniques. In this paper, the authors focus on a hybrid-ARQ scheme and propose a novel reliable re-transmission scheme with a blind estimation. The performance analysis is made by computer simulations. It can be obtained that the proposed scheme has good performance compared to a conventional Hybrid-ARQ scheme.

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  • A-6-1 Analysis of Multidimensional Turbo Trellis Coded Modulation Schemes Using EXIT Chart Method

    Gotoh Wataru, Tsujioka Tetsuo

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the Society Conference of IEICE   2006   2006.09

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  • General Construction and Performance Analysis of Variable-Weight Optical Orthogonal Codes for Optical CDMA Multimedia Network Reviewed International coauthorship

    Nasaruddin, and Tetsuo Tsujioka

    Proceedings of Computational Mechanics & Numerical Analysis (CMNA 2006)   2006.05

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  • A Study on Approximate Analysis of EDF Queue and Reduction of Deadline Violation Probability

    ABE Masaki, TSUJIOKA Tetsuo, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   105 ( 638 )   37 - 42   2006.03( ISSN:09135685

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    Recently, it is important to control several kinds of information according to its priority. Especially, attention is currently focused on Earliest Deadline First (EDF) queue that minimize maximum delay time. In this paper, we propose a method for approximate analysis of waiting time distribution in the M/M/1 EDF queue which has two relative deadline time. In addition, we propose a allocation method of relative deadline in each node for reduction of probability deadline violation. The simulation results show the effectiveness of the propose method compared to conventional scheme.

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  • Performance Evaluation of Turbo Trellis-Coded Modulation Schemes Using Multidimensional QAM Signal Sets

    GOTOH Wataru, TSUJIOKA Tetsuo

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   105 ( 638 )   85 - 90   2006.03( ISSN:09135685

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    Recently, turbo trellis-coded modulation which is combination of trellis-coded modulation and turbo codes attracts researcher's attention. Trellis-coded modulation(TCM) provides high bandwidth efficiency, and turbo codes provide excellent BER performance. Moreover, multidimensional turbo TCM which is combination of multidimensional TCM and turbo codes is under study. Turbo TCM was applied to PSK signal sets based on binary generators. This scheme has high flexbility of signal sets construction, high bandwidth efficiency and much coding gain. In this paper, we applied turbo TCM to multidimensional QAM(Quadrature Amplitude Modulation) signal sets which have higher bandwidth efficiency, and made comparison based on some criteria. As a result, we were able to obtain much coding gain.

    CiNii Article

  • Localization of Robots in Victim Detection System Operated by Restricted Mesh Method

    OKAMOTO Masahiro, SUGIYAMA Hisayoshi, TSUJIOKA Tetsuo, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report   105 ( 638 )   31 - 36   2006.03( ISSN:09135685

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    A victim detection system is proposed for rescue operations in disaster areas. This system is used by GPS (Global Positioning System) to estimate position. But we can't estimate position, when uses GPS at indoor areas. In this paper, we propose a method for position estimation applied to the mixed area where GPS is available or not. In addition, to apply restricted mesh method to this method more improve position estimation accuracy. The computer simulation results show that we can confirme improvement of position estimation accuracy.

    CiNii Article

  • 隣接パルス間隔に基づいて設計された可変長かつ可変重みを有する光直交符号

    ナサルディン, 井上 和也, 辻岡 哲夫, 杉山 久佳, 原 晋介

    電子情報通信学会技術研究報告. OCS, 光通信システム   105 ( 563 )   35 - 40   2006.01

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    CiNii Article

  • 隣接パルス間隔に基づいて設計された可変長かつ可変重みを有する光直交符号((フォトニック)IPネットワーク技術, (光)ノード技術, WDM技術, 一般)

    ナサルディン, 井上 和也, 辻岡 哲夫, 杉山 久佳, 原 晋介

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. OCS, 光通信システム   105 ( 563 )   35 - 40   2006.01( ISSN:09135685

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    本論文では、隣接パルス間隔に基づいて設計された可変長かつ可変重みを有する光直交符号(MLVW-OOC)の構成を示す。提案するMLVW-OOCは従来符号と比較して低い相互相関値をする。この符号は、従来の多重長OOCと比べて、高い柔軟性をもち、また、それらの相互相関性能は従来方式を越える。MLVW-OOCでは、可変重みを有する符号はマルチサービスと差別化されたサービスの品質(QoS)を、また、可変長を有する符号はマルチレートサービスをサポートするように設計されている。本稿では、構築法とその性能評価について報告する。

    CiNii Article

  • Multiple-Length Variable-Weight Optical Orthogonal Codes for Multi-Rate Multi-Quality Optical CDMA Systems

    Proceedings of GLOBECOM 2006   ( OPN02-1 )   2006

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  • Improvement of transmission properties of synchronized QoS ad hoc network by rapid control method Reviewed

    Sugiyama H, Tsujioka T, Murata M

    ELECTRONICS AND COMMUNICATIONS IN JAPAN PART I-COMMUNICATIONS   89 ( 9 )   51 - 59   2006( ISSN:8756-6621

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/ecja.20278

  • Construction of Rate-Compatible Low Density Parity Check Codes for Fast Blind Rate Estimation

    吉川 智康, 辻岡 哲夫, 杉山 久佳

    大阪市立大学 Memoirs of the Faculty of Engineering, Osaka City University   46   27 - 36   2005.12( ISSN:00786659

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    Publishing type:Research paper (bulletin of university, research institution)  

    CiNii Article

  • Variable-Weight Optical Orthogonal Codes Using FBG Encoders

    辻岡 哲夫, 杉山 久佳, 村田 正

    大阪市立大学 Memoirs of the Faculty of Engineering, Osaka City University   46   37 - 44   2005.12( ISSN:00786659

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    Publishing type:Research paper (bulletin of university, research institution)  

    CiNii Article

  • Low Power Consumption Type Multi-Robot Network System for Rescue Operations

    OKAMOTO Masahiro, SUGIYAMA Hisayoshi, TSUJIOKA Tetsuo, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   105 ( 280 )   31 - 36   2005.09( ISSN:09135685

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    A method is proposed for multi-robot network system for rescue operations in disaster areas. Battery cost is one of multi-robot network system problems. Lifetime of multi-robots is very short. Moreover, decrease of battery energy occurs from wasted actions by autonomous moving. In this paper, we propose restricted mesh method depending on the conventional mesh method which divides search area into grid cells and set up fixed nodes in these cells. The computer simulation was carried out and we confirmed that reduces battery cost by node moving and improves network reliability.

    CiNii Article

  • Victim Detection System Consists of Networked Mobile Robots Reviewed

    Hisayoshi Sugiyama, Tetsuo Tsujioka, Masashi Murata

    IPSJ Journal   46 ( 7 )   1777 - 1788   2005.07

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • Improvement of Transmission Properties of Synchronized QoS Ad Hoc Network by Rapid Control Method Reviewed

    Hisayoshi Sugiyama, Tetsuo Tsujioka, Masashi Murata

    IEICE Trans. Commun.   J88-B ( 6 )   1038 - 1046   2005.06( ISSN:1344-4697

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • A Flexible Optical CDMA System Using Optical Orthogonal Codes with Unequal Weights

    Tsujioka Tetsuo, Inoue Kazunari, Sugiyama Hisayoshi, Murata Masashi

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. IT, 情報理論   105 ( 85 )   17 - 22   2005.05( ISSN:09135685

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    Publishing type:Research paper (international conference proceedings)  

    An optical orthogonal code (OOC) is one of attractive research topics for fully optical CDMA systems. Well-known OOCs are time-spreading type codes, while recent OOCs include frequency-spreading type codes that can be generated by innovative FBG encoder technologies. In this paper, frequency-spreading type OOCs with unequal weights to solve a near-far problem in optical CDMA systems have been studied. We have proposed that partial codes of MQC are used as the unequal-weight codes. BER performance is derived by a Gaussian approximation technique. The capacity of the CDMA system is also obtained. The results show that the proposed OOCs can provide flexible performance even when user's received power ratio becomes large.

    CiNii Article

  • Comparison of Rate Estimation Techniques for Rate-Compatible LDPC Codes

    Yoshikawa Tomoyasu, Tsujioka Tetsuo, Sugiyama Hisayoshi, Murata Masashi

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. IT, 情報理論   105 ( 83 )   19 - 24   2005.05( ISSN:09135685

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    Publishing type:Research paper (international conference proceedings)  

    Recently, Rate-Compatible LDPC (RC-LDPC) codes have become attractive research topics on channel coding. RC-LDPC codes provide various coding rates and users can select suitable coding rates according to channel conditions. However, RC-LDPC codes have a disadvantage: the transmitter notifies the coding rate to the receiver as side-information. In this paper, we propose a rate estimation technique which can estimate the rate with the Log-Likelihood Ratio (LLR) only, and have made performance comparison with two rate estimation techniques when transmitter selects coding rates randomly. Computer simulation results show that proposed technique can improve performance of rate estimation of RC-LDPC codes.

    CiNii Article

  • Performance Evaluation of Turbo Trellis-Coded Modulation Schemes Using Multidimensional 4-, 8- and 16-PSK Signal Sets

    Yamamoto Katsutoshi, Tsujioka Tetsuo, Sugiyama Hisayoshi, Murata Masashi

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告. IT, 情報理論   105 ( 83 )   31 - 36   2005.05( ISSN:09135685

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    Publishing type:Research paper (international conference proceedings)  

    In this paper, we evaluate turbo trellis-coded modulation schemes using multidimensional (multi-D) 4-, 8- and 16- PSK signal sets based on binary generators. Trellis-coded multi-D phase modulation has some advantages compared with trellis- coded phase modulation. Also turbo codes have powerful error correction. We compared the performance of proposal system to multi-D phase modulation and turbo trellis-coded phase modulation in computer simulations, it was shown to be able to obtain the flexibility of the bandwidth efficiency without deteriorating the coding gain when there were a lot of numbers of storage elements in the convolutional encoders.

    CiNii Article

  • A Study on Adaptive Modulation for M-ary DS-UWB

    KOTERA Hiroshi, TSUJIOKA Tetsuo, SUGIYAMA Hisayoshi, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Circuits and systems   104 ( 717 )   69 - 74   2005.03( ISSN:09135685

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    Publishing type:Research paper (conference, symposium, etc.)  

    UWB (Ultra Wideband) takes attention as systems which can transmit at higher bit rates. In this paper, we propose an adaptive modulation scheme which controlls numbers of modulation codes and of pulse repetition on multi user environment for multiple modulated DS-UWB, transmitting amplitude modulated pulses by spreading and orthogonal codes, and estimate the performance with computer simulation.

    CiNii Article

  • A Study on Rate Estimation Technique of Rate-Compatible LDPC Codes

    YOSHIKAWA Tomoyasu, TSUJIOKA Tetsuo, SUGIYAMA Hisayoshi, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   104 ( 721 )   19 - 24   2005.03( ISSN:09135685

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    Publishing type:Research paper (conference, symposium, etc.)  

    Recently, Rate-Compatible LDPC (RC-LDPC) codes are attractive research topics on channel coding. RC-LDPC codes provide various coding rates and users can select suitable code rates according to channel conditions. However, RC-LDPC codes have a disadvantage that transmitter should notify the code rate to the receiver as a side-information. In this paper, we proposed a rate estimation technique that the receiver can estimate used code rate based on posteriori log-likelihood ration (LLR) even if transmitter selects code rates randomly. Computer simulation results show that proposed technique can improve performance of rate estimation of RC-LDPC codes. Moreover, it is obtained that complexity of computation can be reduced.

    CiNii Article

  • Turbo Trellis-Coded Modulation Using Multidimensional PSK Signal Sets Based on Binary Generators Reviewed

    YAMAMOTO Katsutoshi, TSUJIOKA Tetsuo, SUGIYAMA Hisayoshi, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   104 ( 721 )   13 - 18   2005.03( ISSN:09135685

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    Publishing type:Research paper (conference, symposium, etc.)  

    In this paper, we propose the application of trellis coded multidimensional phase modulation into turbo code. Trellis coded multi-D phase modulation has some advantages compared with trellis coded phase modulation. Also turbo code has powerful error correction. we expect this proposed system has the best of both merits. So we compare the performance of proposal technique to multi-D phase modulation and turbo trellis coded phase modulation in the simulations.

    CiNii Article

  • A Study on Control Message Reduction Schemes for Bandwidth Guaranteed QoS in Ad Hoc Networks

    SAKUMOTO Kazuyuki, SUGIYAMA Hisayoshi, TSUJIOKA Tetsuo, MURATA Masashi

    104 ( 721 )   53 - 58   2005.03

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    Publishing type:Research paper (conference, symposium, etc.)  

    CiNii Article

  • Wide Area Search by Victim Detection System Based on Ad Hoc Network and Autonomous Path Recovery Reviewed

    Hisayoshi Hisayoshi, Tetsuo Tsujioka, Masashi Murata

    The Society of Instrument and Control Engineers, Transactions of the Society of Instrument and Control Engineers   41 ( 2 )   183 - 185   2005.02( ISSN:0453-4654

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

    A method is proposed for wide area search by victim detection system. In the victim detection system, robots configure the ad hoc network and search victims maintaining autonomously the communication path to MS (monitor station). Each robot selects its role between HR (head robot) and RR (relay robot) according to its FT (forwarding table). HR explores the disaster area whereas RR plays as a relay terminal connecting MHR (master HR) and MS. MHR is selected properly among HRs recorded in the FT at each RR. The effectivity of this method is confirmed by omputer simulations.

    DOI: 10.9746/sicetr1965.41.183

    CiNii Article

  • A Study on Optical Orthogonal Codes with Unequal Weights Using FBG Encoders

    TSUJIOKA Tetsuo, INOUE Kazunari, SUGIYAMA Hisayoshi, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, IEICE technical report. Communication systems   104 ( 595 )   165 - 170   2005.01( ISSN:09135685

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    Publishing type:Research paper (conference, symposium, etc.)  

    Recently, novel optical orthogonal codes (OOC) using fiber bragg gratings (FBGs) are proposed, in which a broad band optical pulse is spread into several different wave-length pulses. There are many related works, in which they have been evaluated mostly with equal code weight designs. In this paper, we evaluate a new optical orthogonal code design with unequal weights using FBG encoders. The proposed codes are designed as masked and/or separated codewords of conventional MQC codes. Results of performance evaluations show that we can control error-free regions of optical CDMA systems by changing parameters of unequal OOC weights flexibly.

    CiNii Article

  • Wide Area Search by Vistim Detection System Based on Ad Hoc Network and Autonomous Path Recovery

    SICE   41 ( 2 )   183 - 185   2005

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  • Performance Evaluation of Turbo Trellis-Coded Modulation Schemes Using Multidimensional 4-, 8- and 16-PSK Signal Sets

    Proceedings of 2005 Hawaii, IEICE and SITA Joint Conference on Information Theory   31 - 36   2005

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    Publishing type:Research paper (scientific journal)  

  • Comparison of Rate Estimation Techniques for Rate-Compatible LDPC Codes

    Proceedings of 2005 Hawaii, IEICE and SITA Joint Conference on Information Theory   19 - 24   2005

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    Publishing type:Research paper (scientific journal)  

  • B-8-4 Performance Evaluation of Optical Orthogonal Codes with Unequal Weights Using FBG Encoders

    TSUJIOKA Tetsuo, INOUE Kazunari, SUGIYAMA Hisayoshi, MURATA Masashi

    The Institute of Electronics, Information and Communication Engineers, Proceedings of the IEICE General Conference   2005

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    CiNii Article

  • 論理演算子により逐次符号辞書を参照する符号化方式 Reviewed

    入江智和, 辻岡哲夫, 杉山久佳, 村田正

    映像情報メディア学会誌   58 ( 5 )   705 - 712   2004.05

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • A New Packet Forwarding Scheme Based on Per-Packet Deadlines in IP Networks Reviewed

    Tetsuo Tsujioka, Koichi Iida, Hisayoshi Sugiyama, Masashi Murata

    J86-B ( 12 )   2501 - 2510   2003.12( ISSN:1344-4697

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  • 高速データ通信に適したリアルタイム圧縮アルゴリズム ~2値画像データ圧縮への適用~

    入江智和, 杉山久佳, 村田正

    映像情報メディア学会誌   56 ( 5 )   849 - 852   2002

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    Publishing type:Research paper (scientific journal)  

  • Performance evaluation of adaptive multi-path routing networks

    Technical Report of IEICE   102 ( 132 )   25 - 30   2002( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • A Study on Performance Degradation of Ultra Wide Band Impulse Radio Caused by Imperfect Power Control

    Technical Report of IEICE   102 ( 147 )   45 - 50   2002( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • A Study of a New Packet Forwarding Scheme for End-to-End Delay Guarantees in Adaptive Multi-Path Routing Networks

    Technical Report of IEICE   102 ( 20 )   9 - 16   2002( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • A Study of Reliable Transmission Scheme for Achieving End-to-End Delay Bounds by EDF Queuing Based on Per-Packet Deadlines

    Proc. of International Symposium on Information Theory and Its Applications   2   451 - 454   2002( ISBN:4-902087-03-0

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    Publishing type:Research paper (scientific journal)  

  • Performance Evaluation of Web Database for Huge Picture Files

    1 ( 1 )   28   2001

  • Performance analysis of optical CDMA using unequal-weight optical orthogonal codes

    Proceedings of the 24th Symposium on Information Theory and Its Applications   2 ( 1 )   2001

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    Publishing type:Research paper (scientific journal)  

  • A Study of Optical Orthogonal Codes with Capture Effect

    Technical Report of IEICE   101 ( 357 )   7 - 14   2001( ISSN:0913-5685

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    Publishing type:Research paper (scientific journal)  

  • Design and Implementation of a High-speed File Server Based on PC-UNIX Reviewed

    Tetsuo Tsujioka, Kazuaki Obana, Tetsuya Onoda

    IEICE Trans. Electron.   82 ( 12 )   2191 - 2200   1999.12

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  • Service-Uniform ONU Based on Low Cost Audio AD/DA Converters and CDM with Novel Code Word Sets Reviewed

    Tetsuya Onoda, Ryuma Kakinuma, Seiichi Yamano

    IEICE Trans. Commun.   82 ( 9 )   1446 - 1458   1999.09

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  • An Ultra High-Speed File Server with 105 Mbytes/s Read Performance Based on a Personal Computer Reviewed

    Tetsuo Tsujioka, Tetsuya Onoda

    IEICE Trans. Commun   81 ( 12 )   2503 - 2508   1998.12

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  • Throughput Characteristic of TCP with Window Size Expansion and Network Direct Memory Access over a Large Delay-Bandwidth Link Reviewed

    Satoshi Kotabe, Tetsuo Tsujioka, Tetsuya Onoda

    IEICE Trans. Commun.   81 ( 12 )   2357 - 2363   1998.12

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • 衛星系と地上系の2通信路を用いた多次元符号化変調方式 Reviewed

    辻岡哲夫, 岡育生, 藤原値賀人, 奥本隆昭

    信学論(B-II)   76 ( 5 )   407 - 414   1993.05

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Books and Other Publications

  • 人権問題の最前線

    辻岡哲夫( Role: Joint author ,  インターネットメディアと付き合うための心構え)

    大阪市立大学人権問題委員会  2022.04 

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    Book type:General book, introductory book for general audience

MISC

Presentations

  • A Trial for Estimating Lung Age Using Fukimodoshi Blowouts ~ Derivation of Lung Age Estimation Formula and its Evaluation (I) ~ Domestic conference

    Sho Sekimoto, Misaki Shinmyo, Tetsuo Tsujioka, Hitoshi Watanabe, Yoshimasa Matsuura, Hisayo Yokoyama, Haruka Kawabata and Yoshihiro Yamashina

    IEICE Technical Workshop on Healthcare and Medical Information Communication Technology  2024.03  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Matsue City  

  • A Trial for Estimating Lung Age Using Fukimodoshi Blowouts ~ Prototype Results of Electronic Fukimodoshi and State Estimation by Guage Pressure Measurement ~ Domestic conference

    Tetsuo Tsujioka, Sho Sekimoto, Misaki Shinmyo, Hitoshi Watanabe, Yoshimasa Matsuura, Hisayo Yokoyama, Haruka Kawabata and Yoshihiro Yamashina

    IEICE Technical Workshop on Healthcare and Medical Information Communication Technology  2024.03  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Matsue City  

  • Environment Recognition System for Visually Impaired People Using LIDAR Mounted on User's Head ~ Improvements of Distance Measurement/Acoustic Signal Conversion and Experimental Evaluation ~ Domestic conference

    Liqi Zhu, Tetsuo Tsujioka, Shigeyoshi Nakajima, Hitoshi Watanabe and Ikuo Oka

    IEICE Technical Workshop on Human Communication Science  2024.03  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Tokoha University  

  • Design and Implementation of Environment Recognition System for Visually Impaired People Using LIDAR Distance Measurement and Acoustic Signal Conversion Domestic conference

    Liqi Zhu, Tetsuo Tsujioka, Shigeyoshi Nakajima, Hitoshi Watanabe, Ikuo Oka

    SITA2023  2023.11  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Yuda, Yamaguchi, Japan  

  • Wireless Measurement of Gauge Pressure, Flow Velocity and Flow Volume in Fukimodoshi ~ Prototype of a Built-in Type Electronic Fukimodoshi ~ Domestic conference

    Misaki Shinmyo, Shiryu Miyazawa, Tetsuo Tsujioka, Hitoshi Watanabe, Yoshimasa Matsuura, Hisayo Yokoyama, Haruka Kawabata and Yoshihiro Yamashina

    IEICE Technical Workshop on Communication Systems  2023.11  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Numadu, Shizuoka, Japan  

  • Paper Recommendation Method for Similarity between Authors with Collaborative Filterings and Implementation of Keyword Search Support Based on Trend Ranking Domestic conference

    Kubo Ryusei, Tsujioka Tetsuo, Takubo Tomohito and Noguchi Hiroshi

    IEICE Technical Workshop on Communication Systems  2023.11  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Numadu, Shizuoka, Japan  

  • Sound Signal Generation for the Visually Impaired to Recognize the Scenery Using Music -- Depth Information with LIDAR and the Expression by Amplitude and Frequency Modulation -- Domestic conference

    Naoki Aoyama, Shigeyoshi Nakajima, Tetsuo Tsujioka, Ikuo Oka, Hitoshi Watanabe and Natsumi Kudo

    IEICE Technical Workshop on Human Communication Science  2023.03  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Online  

  • Welding Seam Detection between Cylinder and Plane using Point Cloud Data International conference

    Ryosuke Kusumoto, Tomohito Takubo, Tetsuo Tsujioka

    33rd 2022 International Symposium on Micro-Nano Mechatronics and Human Science  2022.11 

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    Presentation type:Oral presentation (general)  

  • Development of Archery Game Supporting System for Visually Impaired People: Performance Evaluation of Acoustic Sight Based on Practical Experiment Domestic conference

    Sei Ohirabaru, Tetsuo Tsujioka, Hitoshi Watanabe and Ikuo Oka

    IEICE Technical Workshop on Human Communication Science  2022.03  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Online  

  • Sound Signal Generation for the Visually Impaired to Recognize the Scenery Using Music: Depth Information with LIDAR and the Expression by Pulse Width Modulation Domestic conference

    Naoki Aoyama, Shigeyoshi Nakajima, Tetsuo Tsujioka, Ikuo Oka and Hitoshi Watanabe

    IEICE Technical Workshop on Human Communication Science  2022.03  IEICE

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    Venue:Online  

  • Development of Archery Game Supporting System for Visually Impaired: Prototype Overview of Acoustic Sight Using a Camera with Object Recognition Function and its Basic Experimental Evaluations

    Sei Ohirabaru, Tetsuo Tsujioka, Hitoshi Watanabe and Ikuo Oka

    IEICE Technical Workshop on Human Communication Science  2022.01  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Online  

  • 呼気同期皮膚刺激による副交感神経賦活化の刺激周波数による差異 Domestic conference

    渡辺一志, 山下和彦, 辻岡哲夫, 藤堂聖真, 山下久仁子, 本宮暢子, 中井久純

    日本健康行動科学会第20回学術大会  2021.09  日本健康行動科学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン開催  

  • Environmental Cognition by Auditory and Tactile Information Using Plane Recognition Domestic conference

    Koki Samoto, Ikuo Oka, Tetsuo Tsujioka, Shigeyoshi Nakajima and Hitoshi Watanabe

    IEICE Technical Workshop on Human Communication Science  2021.04  IEICE

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    Presentation type:Oral presentation (general)  

    Venue:Online  

  • 呼気同期皮膚刺激による副交感神経賦活化の刺激部位による差異 Domestic conference

    渡辺一志, 山下和彦, 山下久仁子, 髙田洋吾, 辻岡哲夫, 関和俊, 大島秀武, 中井久純, 本宮暢子

    第75回日本体力医学会  2020.09  日本体力医学会

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    Presentation type:Oral presentation (general)  

    Venue:Web開催  

  • Remote Measurement System of Heat Environment in Industrial Food Processing Ovens in Wireless Communications -- Evaluation of Accuracy and Reliability of Thermocouple Measurement with Delta-Sigma A/D Converters -- Domestic conference

    2016.07 

  • 食品用連続蒸し器庫内における加熱環境測定装置の開発 ~温度・湿度分布のワイヤレス測定~ Domestic conference

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    第33回センシングフォーラム  2016.06 

  • Additional Design and Implementation of the IEICE Technical Committee Submission System toward a Complete Electronic Publishing Domestic conference

    2016.05 

  • Wireless Monitoring for People Care Service in Local Communities - A Study on Base Station Allocation Based on Experimental Measurements - Domestic conference

    2015.11 

  • Introduction to the Intelligent Database System for Supporting the Technical Committee's Activities and Some Ideas for the Future Domestic conference

    2015.11 

  • Design and Implementation of a Wireless Temperature/Humidity Sensor Enabling Measurement of Thermal Environment in Food Processing Oven Domestic conference

    2015.11 

  • An Experimental Study on RSSI Characteristics and Packet Loss Rate in a Case of Transmission from the Inside to the Outside of an Oven in 920 MHz Band Wireless Networks Domestic conference

    2015.11 

  • Design and Implementation of Monitoring Devices for Elders Using a 920 MHz Band Network Domestic conference

    2015.11 

  • Development of measuring device for thermal environment in an oven for food processing Domestic conference

    2015.09 

  • Development of measuring device for thermal environment in an oven for food processing Domestic conference

    2015.09 

  • An Experimental Study on Positioning Errors Using 920 MHz Band Wireless Nodes on Wall Surfaces of Buildings Domestic conference

    2015.07 

  • Study on humidity measurement method above boiling point using principle of psychrometer Domestic conference

    2015.04 

  • An Experiment of Outdoor Positioning Using a 920 MHz Wireless Multi-Hop Network Domestic conference

    2015.03 

  • Experimental Study on Outdoor Positioning in 920MHz Wireless Networks Domestic conference

    2014.12 

  • Investigation of Humidity Measurement Method Using Porous Ceramics Based on Principle of Psychrometer Domestic conference

    2014.11 

  • Temperature and Humidity Sensing at High Temperature -- Remote Monitoring Using Wireless Networks in the 2.4GHz Band -- (Invited Talk) Domestic conference

    2014.07 

  • Real Time Vital Data Collection for Soccer Games – Measurement of Packet Loss Rate and Delay Time in Field Experiments -- Domestic conference

    2014.05 

  • Exercise Energy Expenditure Estimation for Athletes Using Acceleration Data Domestic conference

    2014.05 

  • Introduction to the Practical Teaching of Communication Engineering by Experiment and Exercise Domestic conference

    2014 IEICE General Conference  2014.03 

  • Introduction to the IEICE Technical Report Online Service Domestic conference

    Workshop on Information Theory of IEICE  2014.01 

  • A Study on Water Retention Control for a Humidity Sensor in Superheated Steam International conference

    14th Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2013)  2013.10 

  • A Water Retention Control System for Humidity Sensing at High Temperature - Experimental Evaluation of Control System Using Feed Water Pump - Domestic conference

    2013 IEICE Society Conference  2013.09 

  • A Study on Optical Orthogonal Codes with Multiple Bit Rates and Multiple Chip Rates Domestic conference

    IEICE Workshop on Communication Systems  2013.07 

  • A Water Retention Control System for Humidity Sensing at High Temperature Domestic conference

    IEICE Workshop on Communication Systems  2013.04 

  • A Study on Code Construction of Optical Orthogonal Codes with Variable Chip Rates International conference

    2012 International Symposium on Information Theory and its Applications (ISITA2012)  2012.10 

  • Introduction to the Practical Teaching of Error Correcting Codes by C Programming (Invited) Domestic conference

    2012 IEICE Socity Conference  2012.09 

  • A Study on Variable Chip Rate Optical Orthogonal Codes with Unequal Bit Rates Domestic conference

    IEICE Workshop on Communication Systems  2012.07 

  • A study on diversity receiving for vital data collection in UHF band mobile sensor networks Domestic conference

    2012.05 

  • Performance evaluation of adaptive distributed video coding using video capsule endoscopy Domestic conference

    2012.05 

  • Design of Optical Orthogonal Codes with Variable Chip Rate for Flexible Optical CDMA Systems International conference

    International Conference on Advanced Communication Technology (ICACT 2012)  2012.02 

  • A Study on Design of Optical Orthogonal Codes with Variable Chip Rates -- On Expansion of Flexibility for Faster Chip Rate Code Design Based on Pulse Interval Distributions -- Domestic conference

    2011.12 

  • A Study on Design of Optical Orthogonal Codes with Variable Chip Rates - Some Issues Related to Asymmetry of Pulse Interval Distributions - (Invited Talk) Domestic conference

    IEICE Workshop on Communication Systems  2011.07 

  • A Study on Improvements of Rate Estimation and Reduction of Computational Complexity for Rate Compatible Punctured LDPC Codes Domestic conference

    IEICE Workshop on Communication Systems  2011.04 

▼display all

Industrial Property Rights

  • 位置推定装置、位置推定方法、及び位置推定プログラム

    辻岡哲夫,髙橋泰宏,小谷博之

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    property_type:Patent 

    Application no:特願2015-191144 

    Announcement no:特開2017-67529 

    Publication no:特開2017-67529 

    Patent/Registration no:特許第6575002号 

    位置推定装置、位置推定方法、及び位置推定プログラム

  • 見守りシステム、情報処理方法、及びプログラム

    辻岡哲夫,髙橋泰宏,小谷博之

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    property_type:Patent 

    Application no:特願2015-156915 

    Announcement no:特開2017-037385 

    Publication no:特開2017-037385 

    Patent/Registration no:特許第6575000号 

    見守りシステム、情報処理方法、及びプログラム

  • 自動皮膚刺激装置

    渡辺 一志, 山下 和彦, 辻岡 哲夫

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    property_type:Patent 

    Application no:特願2020-202534 

    Announcement no:特願2020-202534 

  • 通信方法、無線基地局装置、及び通信装置

    辻岡哲夫,髙橋泰宏,小谷博之

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    property_type:Patent 

    Application no:特願2015-181464 

    Announcement no:特開2017-059923 

    Publication no:特開2017-059923 

    通信方法、無線基地局装置、及び通信装置

  • 測定装置

    伊與田浩志,辻岡哲夫

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    property_type:Patent 

    Application no:特願2015-132727 

    測定装置

  • 蒸気量測定装置および蒸気量測定方法

    北村治雄,伊與田浩志,辻岡哲夫,田中倫明

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    property_type:Patent 

    Application no:特願2013-54032 

    蒸気量測定装置および蒸気量測定方法
    本発明は、蒸気量測定装置および蒸気量測定方法に関し、特に、200℃を超える高温環境下や、測定装置(感湿部)のへの汚れや水滴の付着,水蒸気の結露が起きるような環境下においても水蒸気量を測定可能であり、かつ測定装置(感湿部)の取り換えが簡便な蒸気測定装置および蒸気量測定方法に関する。

  • 光通信方法及びそれを使用した光通信装置

    田島章雄, 荒木壮一郎, 北山研一, 原晋介, 辻岡哲夫

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    property_type:Patent 

    Application no:特願2007-029417 

  • 通信ディスク装置

    辻岡哲夫

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    property_type:Patent 

    Application no:特願平11-97194 

    Announcement no:特開2000-293316 

    Publication no:特開2000-293316 

  • 優先経路制御方法及びルータ装置

    小野田哲也, 辻岡哲夫, 尾花和昭

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    property_type:Patent 

    Application no:特願平10-172476, 特願平10-343946 

    Announcement no:特開2000-078188,  

    Publication no:特開2000-078188,  

  • コンピュータシステム

    辻岡哲夫

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    property_type:Patent 

    Application no:特願平10-045941 

  • ファイルシステムの書き込みと読み出し方法およびそれを使用した装置

    辻岡哲夫

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    property_type:Patent 

    Application no:特願平10-03771 

    Announcement no:特開平11-237958 

    Publication no:特開平11-237958 

  • 記録装置

    辻岡哲夫

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    property_type:Patent 

    Application no:特願平09-056547 

    Announcement no:特開平11-085413 

    Publication no:特開平11-085413 

  • ファイルシステム

    辻岡哲夫, 小野田哲也

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    property_type:Patent 

    Application no:特願平09-046356 

    Announcement no:特開平10-240583 

    Publication no:特開平10-240583 

  • 通信装置

    辻岡哲夫, 小野田哲也

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    property_type:Patent 

    Application no:特願平7-199941 

    Announcement no:特開平09-051320 

    Publication no:特開平09-051320 

  • 符号分割多重通信装置

    辻岡哲夫, 小野田哲也

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    property_type:Patent 

    Application no:特願平6-305240 

    Announcement no:特開平08-163081 

    Publication no:特開平08-163081 

▼display all

Grant-in-Aid for Scientific Research

  • 吹き戻し棒を応用した肺機能評価機器の開発

    Grant-in-Aid for Scientific Research(C)  2021.04

  • 高温高湿度の高度利用のための湿度測定法と精度評価技術に関する研究

    Grant-in-Aid for Scientific Research(C)  2015.04

  • 高セキュリティ化・経済化を実現する光アクセス網に関する研究

    Grant-in-Aid for Scientific Research(C)  2010.04

  • Multi-robot network system for rescue operations

    Grant-in-Aid for Scientific Research(C)  2008.04

  • 災害救助用群ロボットネットワークシステム

    Grant-in-Aid for Scientific Research(C)  2006.04

  • Multi-robot network system for rescue operation

    Grant-in-Aid for Scientific Research(C)  2004.03

  • 蓄積型ネットワークにおける待ち行列制御・経路制御の研究

    Grant-in-Aid for Young Scientists(B)  2001.04

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Joint research

  • 景色を聴くための心地よい可聴域変調の開発

    公益財団法人KDDI財団  調査研究助成  2021.04

Contract research

  • 超高湿度環境下での湿度測定のための高耐久性多孔質セラミックス素子および湿度測定装置の開発

    2013.04

  • 運動中のスポーツ選手からのリアルタイム・バイタルデータ収集システムの研究開発

    2012.07

  • バイタルセンサの臨床データ取得とそのユビキタス健康監視への応用に関する研究開発

    2009.04

Other subsidies, etc.

  • 近距離無線タグシステムによる認知症化予知システムにおける研究・開発

    未設定  2014.04

  • 高温高湿度環境下での湿度モニタリング

    未設定  2012.11

Outline of education staff

  • 符号理論では,誤りのない通信の解析・実現に不可欠な,群・環・体・拡大体,巡回符号,フーリエ変換,Z変換などの概念について学びます.論理設計ではディジタル回路の基礎から応用までを学び,電気情報工学実験BではゲートICやPICを用いて実際の回路製作に取り組み,32ビットの高性能プロセッサを用いて実用的な組み込みシステムの設計・実装に必要な内容が学べるように工夫しています.

Charge of on-campus class subject

  • 電気情報工学応用演習

    2022   Weekly class   Undergraduate

  • 通信方式特論 (杉本[対面]/中百舌鳥[遠隔可])

    2022   Weekly class   Graduate school

  • 電気電子系特別演習第2 (中百舌鳥・杉本)

    2022   Intensive lecture   Graduate school

  • 電気電子系特別演習第1

    2022   Intensive lecture   Graduate school

  • 電気情報工学実験B

    2022   Weekly class   Undergraduate

  • 論理設計

    2022   Weekly class   Undergraduate

  • 符号理論

    2022   Weekly class   Undergraduate

  • Logic Design

    2021   Weekly class   Undergraduate

  • Communication Systems

    2021   Weekly class   Graduate school

  • Electrical and Information Engineering Experiment C

    2021   Practical Training   Undergraduate

  • Coding Theory

    2021   Weekly class   Undergraduate

  • Basic Exercises on Electrical and Information Engineering A

    2021   Practical Training   Undergraduate

  • Electrical and Information Engineering Experiment A

    2020   Practical Training   Undergraduate

  • Communication Systems

    2020   Weekly class   Graduate school

  • Electrical and Information Engineering Experiment C

    2020   Practical Training   Undergraduate

  • Coding Theory

    2020   Weekly class   Undergraduate

  • Basic Exercises on Electrical and Information Engineering A

    2019     Undergraduate

  • Information Engineering Experiment III

    2019     Undergraduate

  • Programming Practice VI

    2019     Undergraduate

  • Information Engineering Experiment IV

    2019     Undergraduate

  • Electrical and Information Engineering Experiment C

    2019     Undergraduate

  • Communication Systems

    2019     Graduate school

  • Electrical and Information Engineering Experiment A

    2019     Undergraduate

  • Coding Theory

    2019     Undergraduate

  • Basic Exercises on Electrical and Information Engineering A

    2018     Undergraduate

  • Information Engineering Experiment III

    2018     Undergraduate

  • Programming Practice VI

    2018     Undergraduate

  • Information Engineering Experiment IV

    2018     Undergraduate

  • Electrical and Information Engineering Experiment C

    2018     Undergraduate

  • Communication Systems

    2018     Graduate school

  • Electrical and Information Engineering Experiment A

    2018     Undergraduate

  • Coding Theory

    2018     Undergraduate

  • Basic Exercises on Electrical and Information Engineering A

    2017     Undergraduate

  • Information Engineering Experiment III

    2017     Undergraduate

  • Programming Practice VI

    2017     Undergraduate

  • Information Engineering Experiment IV

    2017     Undergraduate

  • 符号理論

    2017     Undergraduate

  • Electrical and Information Engineering Experiment A

    2017     Undergraduate

  • Electrical and Information Engineering Experiment C

    2017     Undergraduate

  • Communication Systems

    2017     Graduate school

  • Basic Exercises on Electrical and Information Engineering A

    2016     Undergraduate

  • Communication Systems

    2016     Graduate school

  • Information Engineering Experiment IV

    2016     Undergraduate

  • Information Engineering Experiment III

    2016     Undergraduate

  • Programming Practice VI

    2016     Undergraduate

  • Coding Theory

    2016     Undergraduate

  • Basic Exercises on Electric and Information Engineering B

    2016     Undergraduate

  • Programming Practice C

    2016     Undergraduate

  • Basic Exercises on Electrical and Information Engineering A

    2015     Undergraduate

  • Communication Systems

    2015     Graduate school

  • Information Engineering Experiment IV

    2015     Undergraduate

  • Information Engineering Experiment III

    2015     Undergraduate

  • Programming Practice VI

    2015     Undergraduate

  • Coding Theory

    2015     Undergraduate

  • Basic Exercises on Electric and Information Engineering B

    2015     Undergraduate

  • Communication Systems

    2014     Graduate school

  • Information Engineering Experiment IV

    2014     Undergraduate

  • Information Engineering Experiment III

    2014     Undergraduate

  • Programming Practice VI

    2014     Undergraduate

  • Coding Theory

    2014     Undergraduate

  • Communication Systems

    2013     Graduate school

  • Information Engineering Experiment IV

    2013     Undergraduate

  • Information Engineering Experiment III

    2013     Undergraduate

  • Programming Practice VI

    2013     Undergraduate

  • Coding Theory

    2013     Undergraduate

  • Communication Systems

    2012     Graduate school

  • Information Engineering Experiment IV

    2012     Undergraduate

  • Information Engineering Experiment III

    2012     Undergraduate

  • Programming Practice VI

    2012     Undergraduate

  • Coding Theory

    2012     Undergraduate

  • Communication Systems

    2011     Graduate school

  • Information Engineering Experiment IV

    2011     Undergraduate

  • Information Engineering Experiment III

    2011     Undergraduate

  • Programming Practice VI

    2011     Undergraduate

  • Coding Theory

    2011     Undergraduate

▼display all

Charge of off-campus class subject

  • 物理学

    2016
    -
    Now

  • 物理学II

    2016
    -
    Now

  • 確率・統計学概論

    2009
    -
    Now

  • 通信工学

    2006
    -
    2016
    Institution:Kinki University

Faculty development activities

  • FD活動への貢献   2022

     More details

    学科の実験委員会に参画し,学生実験のテキストの更新や課題内容の点検を行った.

Number of papers published by graduate students

  • 2022

    Number of undergraduate student / college student presentations:Number of graduate students presentations:1

Number of instructed thesis, researches

  • 2022

    Number of instructed the graduation thesis:Number of graduation thesis reviews:0

    [Number of instructed the Master's Program] (previous term):[Number of instructed the Master's Program] (letter term):0

    [Number of master's thesis reviews] (chief):[Number of master's thesis reviews] (vice-chief):3

    [Number of doctoral thesis reviews] (chief):[Number of doctoral thesis reviews] (vice-chief):0

Job title

  • Manager within the university

    Researcher  2015.03

Other

  • Job Career

    2011.10 - Now

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    Osaka City University Graduate School of Engineering Associate Professor

  • Job Career

    2004.04 - 2011.09

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    Osaka City University Faculty of Engineering Lecturer

  • Job Career

    2000.04 - 2004.03

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    Osaka City University Faculty of Engineering Research Associate