KOHNO Ryuji

Affiliation

Faculty of Engineering, Division of Intelligent Systems Engineering

Job Title

Professor

Date of Birth

1956

Research Fields, Keywords

Information Communication Technology(ICT), Medical ICT, Dependable Controlling Communication, Intelligent Transport System(ITS), Wireless Power Transmission(WPT), Regulatory Science

Mail Address

E-mail address

Web Site

http://www.kohnolab.dnj.ynu.ac.jp/index-e.html

Industry-University Collaboration

http://cwc-nippon.co.jp/

Other URL

https://www.oulu.fi/cwc/ (Centre for Wireless Communications, University of Oulu, Finland)

Related SDGs




ORCID  https://orcid.org/0000-0002-8612-1537

写真a

The Best Research Achievement in the last 5 years 【 display / non-display

Profile 【 display / non-display

  • Ryuji Kohno received Ph.D. degree from the University of Tokyo in 1984. Since 1998 he has been a Professor of Graduate School of Engineering Science and the Director of Medical ICT Center in Yokohama National University. He was part-timely a director of ATL in SONY CSL, a director of UWB Technology and Medical ICT institutes of NICT. Since 2007 He is a Finnish Distinguished Professor, University of Oulu, Finland. He is currently the CEO of University of Oulu Research Institute Japan - CWC-Nippon Co. since 2012. He was elected as a member of the Board of Governors of IEEE Information Theory Society. He was editors of the IEEE Transactions on IT, Communications, and ITS. He is fellows of IEEE and IEICE, and was vice-president of IEICE Engineering Sciences Society, a founder and the Chairmen of the IEICE Technical Committees on SST(WBS), ITS, and SDR, Medical ICT and RCC. He became a Distinguished Professor of Oulu University. He was an principal leader of MEXT 21th Century COE and Global COE programs. He is currently a director of Research Center for Novel Medical Systems Based on Interdisciplinary Research between Social and Natural Sciences, and the President of Kanagawa Medical Device Regulatory Science Center.

Graduating School 【 display / non-display

  •  
    -
    1979

    Yokohama National University   Faculty of Engineering   Department of Computer Engineering   Graduated

Graduate School 【 display / non-display

  •  
    -
    1984

    The University of Tokyo  Graduate School, Division of Engineering  Information and Telecommunication Engineering  Doctor Course  Completed

  •  
    -
    1981

    Yokohama National University  Graduate School, Division of Engineering  Information Engineering  Master Course  Completed

  •  
    -
    1984

    The University of Tokyo  Graduate School, Division of Engineering  Information and Telecommunication Engineering  Doctor Course  Completed

  •  
    -
    1981

    Yokohama National University  Graduate School, Division of Engineering  Information Engineering  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  The University of Tokyo

Campus Career 【 display / non-display

  • 2001.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Intelligent Systems Engineering   Professor  

  • 1998.04
    -
    2001.03

    Duty   Yokohama National UniversitySchool of Engineering   Professor  

  • 1988.04
    -
    1998.03

    Duty   Yokohama National UniversitySchool of Engineering   Associate Professor  

  • 2018.04
    -
    Now

    Concurrently   Yokohama National UniversityGraduate school of Engineering Science   Department of Mathematics, Physics, Electrical Engineering and Computer Science   Professor  

  • 2012.04
    -
    Now

    Concurrently   Yokohama National UniversityResearch Center for Novel Medical Systems Based on Interdisciplinary Research between Social and Natural Sciences   Director  

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External Career 【 display / non-display

  • 2019.04
     
     

    Kanagawa Medical Device Regulatory Science Consortium   President  

  • 2012.03
    -
    2019.09

    University of Oulu Research Institute Japan - CWC-Nippon Co. Ltd.   CEO  

  • 2009.04
    -
    2012.03

    National Institute of Information and Communications Technology, Medical ICT Institute   Program Coodinator  

  • 2007.12
    -
    2014.03

    Yokohama City University   Graduate School of Medicine   Guest Professor  

  • 2007.04
     
     

    University of Oulu, Finland   Center of Wireless Communication   Finnish Distinguished Professor  

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Academic Society Affiliations 【 display / non-display

  • 2014.04
     
     
     

    Japan Association of Medical Informatics

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    IEEE

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    EURASIP

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    Software Defined Radio Forum

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Medical systems

  • Communication/Network engineering

 

Research Career 【 display / non-display

  • Mecial ICT(Information and Communications Technology)

    Project Year:  -   

  • Study of Software Defined Radio

    Cooperative Research  

    Project Year:  -   

  • Study on Space-Time Signal Processing and Communication Theory Using Array Antenna

    International Cooperative Research Project  

    Project Year:  -   

  • Study on Intelligent Transport Systems(ITS)

    Cooperative Research  

    Project Year:  -   

  • Research on Cognitive Radio and Network

    Promotion of Basic Research 21 for Breakthroughs in Info-Communications  

    Project Year:  -   

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Books 【 display / non-display

  • Ultra Wideband Signals and Systems in Communication Engineering(Second Edition)

    M. Ghavami, L. B. Mitchael (Part: Joint Work )

    John Wiley & Sons  2006.01

  • Ultra Wideband Signals and Systems in Communication Engineering

    M. Ghavami, L. B. Mitchael (Part: Joint Work )

    John Wiley & Sons  2004.04

  • Software Radio Developments in Japan

    Shinichiro Haruyama (Part: Joint Work )

    John Wiley and Sons, Ltd.  2003.03

  • Wireless Communication in the 21st Century -Interference Cancellation and Multiuser Detection -

    Mansoor Shafai, Shigeaki Ogose, Takeshi Hattori (Part: Joint Work )

    IEEE Press John Wiley & Sons Inc.  2002

  • Encyclopedia of Telecoomunications -Kasami Sequences-

    Tadao Kasami, Ryuji Kohno (Part: Joint Work )

    John Wiley&Sons Inc.  2002

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Thesis for a degree 【 display / non-display

  • ディジタル通信系における干渉の除去に関する研究

    河野 隆二 

      1984.03

    Doctoral Thesis   Single Work

     View Summary

    東京大学(工学博士) 博工第1809号 ディジタル通信システムの全体性能を左右する干渉問題について、情報理論と適応信号処理の観点から干渉低減、干渉除去、更に干渉利用によるマルチユーザ検波の各種方式を考案し理論体系化した。 特に、符号分割多元接続(CDMA)の他局間干渉を低減する系列生成、適応ディジタルフィルタとアダプティブアレーアンテナによる干渉除去および干渉利用による最尤検出法の考案は実用化に貢献した。

Papers 【 display / non-display

  • Hierarchical Threshold Outsource Secret Sharing and Interactive Proof Scheme for Land Conflicts

    Ngye Antoinette Agwa, Takumi Kobayashi, Chika Sugimoto, Ryuji Kohno

    The 35th International Technical Conference on Circuits/Systems, Computers and Communications ( IEICE )  C4-3   1 - 6   2020.07  [Refereed]

    Joint Work

  • A Fine-Tuning Method Using Pruning of Recurrent Neural Network for Prediction of the Anesthetic Effects

    Yoshitomo Sakuma, Takumi Kobayashi, Chika Sugimoto, Ryuji Kohno

    IEEE 14th International Symposium on Medical Information Communication Technology (ISMICT2020) ( IEEE )  RS1-3 ( 1570628351 )   1 - 5   2020.05  [Refereed]

    Joint Work

  • Learning Scheme Based on Stability Analysis for Prediction Model of Anesthetic Effect Using Recurrent Neural Network

    Yoshitomo Sakuma, Kento Takabayashi, Takumi Kobayashi, Chika Sugimoto, Ryuji Kohno

    International Journal of Trend in Research and Development ( IJTRD )  7 ( 2 )   200 - 205   2020.04  [Refereed]

    Joint Work

     View Summary

    手術中の麻酔医の作業を補佐するための人体の麻酔効果をリカレントニューラルネットワークによる機械学習

  • Transmission Power Control of UWB -WBAN for Avoidance of Interference to Cellular Networks Using Integrated Terminal for Both Networks

    Minsoo Kim, Takumi Kobayashi, Chika Sugimoto, Ryuji Kohno

    International Journal of Computer Science and Telecommunications ( A Sysbase Solution, Ltd., London, UK )  11 ( 2 )   8 - 15   2020.03  [Refereed]

    Joint Work

     View Summary

    電波法1次利用の携帯電話ネットワークと2次利用のUWB-BANの共存のための統合端末に基づく送信電力制御アルゴリズム

  • Investigating Buffer Extension in Multi-Hop Networks for Packet Delay Improvement

    Zilole Simate, Ryuji Kohno

    International Journal of Computer Science and Telecommunications ( International Journal of Computer Science and Telecommunications )  10 ( 5 )   1 - 6   2019.10

    Joint Work

     View Summary

    Mesh networks are increasing day by day with their use. And common among them are Low power wide area networks (LPWAN) which have found significant use. In wireless sensors, in most configurations, the relay nodes do not generate their own traffic but simply pass on to the next node. As a cost saving measure, or to increase the coverage, relay nodes can admit traffic by acting as an access point as well as a bridge. Most devices available on the market have limited buffer sizes as a result, using these devices for this purpose may result in packet losses or delays due to the finite size of the buffer. An investigation is done on such a type of network and the end to end delay and buffer length dynamics are observed.

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Works 【 display / non-display

  • Patent of Correlator

    Other 

    1996
     
     
     

  • Patent of Radar System

    Other 

    1995
     
     
     

  • Mobile Ranging and Positioning System

    Other 

    1993
     
     
     

  • Research on Wireless Systems Using Spread Spectrum Techniques

    Other 

    1992
     
     
     

  • Patent of Spread Spectrum Communication System

    Other 

    1991
     
     
     

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Industrial Property 【 display / non-display

  • Universal platform for software defined radio

    Industrial Property No 10070283  Unexpectedly No WO02/05444  Patent No US6823181

    Ryuji Kohno, Masayoshi Abe, Noboru Sasho, Shinichiro Haruyama, Robert Henry Morelos-Zaragoza, Francis Swarts, Pieter Van Rooyen, Yukitoshi Sanada, Lachlan Bruce Michael, Hamid Amir-Alikhani, Veselin B

     View Summary

    The universal platform for the SDR of the present invention employs the direct conversion approach with the n-port MMIC followed by reconfigurable reprogrammable devices such as DSP's or FPGA's. The universal platform is based on the linear operation of the devices. Thus, the DC offset problem may be solved. It is also possible to support very wide bandwidths compared with conventional I/Q receivers. Therefore, the present universal platform is suitable for multimode and multiband communications.

  • Method of generating pulse waveform

    Industrial Property No 10546630  Unexpectedly No WO2004/077775  Patent No US8660206

    Ryuji Kohno

     View Summary

    The present invention forms, in UWB communications in which a pulse of short duration is transmitted, a transmission signal with a desired frequency characteristic by adjusting the shape of a pulse signal used in data transmissions. As a result, radio interference with other wireless systems in UWB communications is reduced. As aspects for adjusting the pulse signal, the present invention comprises an aspect for generating a pulse signal having a desired frequency characteristic by adjusting the shape of a single pulse itself, an aspect for generating a pulse signal having a desired frequency characteristic by combining a plurality of pulses, and an aspect for finding a combination of pulse signals from the frequency characteristic of an object transmission signal.

  • Radio communication system

    Industrial Property No 09576289  Unexpectedly No 09/576,289  Patent No US6522898

    Ryuji Kohno, Hiroki Mochizuki

     View Summary

    A radio communication system is disclosed in which radio communications are performed between a base station and a number of terminal stations. In the base station, a weight value storage section stores amplitude and phase weight values used when a terminal station to communicate with the base station is specified and scanning weight values that allow the base station to scan its associated service area with directional beams when no terminal station is specified. A directivity controller controls the directivity of an array antenna using the scanning weight values stored in the storage section so that the base station scans its associated service area when no terminal is specified. When a communication request signal and a terminal identification signal are received from a terminal, it is specified as a requesting terminal. The directivity controller then determines the directivity of the array antenna on the basis of the weight values corresponding to that requesting terminal station, so that data transmissions are performed between the base station and the requesting terminal station.

  • Spread spectrum radar device using pseudorandom noise signal for detection of an object

    Industrial Property No 08561985  Unexpectedly No 561985   Patent No US5724041

    Kiyoshi Inoue, Haruhiko Ishizu, Ryuji Kohno

     View Summary

    A radar device transmits by a transmitting part a wave whose band is spread by a PN code from a PN generator, receives at a receiving part a reflected wave from an object based on the wave and detects the object by detecting correlation between the received signal and the PN code. In this radar device, the received signal which is spread to a wide range is converted to a low-frequency band which is easy to be measured by a down converter so that a signal is generated when correlation is made by a delay of the PN code from a delay circuit, and generates a pulse signal through waveform shaping of the signal to detect the object and to measure its relative speed and distance at a processing part according to the pulse signal and the delay time.

  • Multi-mode control station, radio communication system, radio station, and radio communication control method

    Industrial Property No 11597511  Unexpectedly No WO2005/117473   Patent No US8355748

    Katsuaki Abe, Takenori Sakamoto, Akihiko Matsuoka, Ryuji Kohno, Motoko Taniguchi

     View Summary

    The overall throughput of the radio communication traffic in a radio communication area in a radio communication environment where a plurality of types of radio communication systems are mixedly used in a neighboring radio communication area is improved. When a multi-mode control station (101) performs communication with a terminal station in a network through a plurality of types of communication systems, a communication link parameter collecting section (10141) collects parameters indicating the states of the communication links. A resource allocation determining section (10143) determines communication resource allocation for which the throughput is the greatest for each resource allocation period according to the parameters. A communication control section (1015) controls a multi-mode communication unit (1012) according to the result of the determination.

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Academic Awards Received 【 display / non-display

  • The IEEE Standards Association Acknowledges with Appreciation

    2012.02   IEEE   Outstanding Contributions to the development of IEEE Standard 802.15.6-2012 IEEE Standard for Local and Metropolitan Area Networks-Part 15.6: Wireless Body Area Networks

    Winner: Ryuji Kohno

  • Finnish Distinguished Professorship

    2007.04    

Grant-in-Aid for Scientific Research 【 display / non-display

  • Multi-layer Network Optimization of Dependable Communication and Control for Medicine, Cars, Disaster Prevention, Energy

    Grant-in-Aid for Scientific Research(B)

    Project Year: 2013.04  -  2016.03  Investigator(s): Ryuji Kohno

     View Summary

    This study has investigated constraint and criterion for optimum design of communication system to control dependable machine-to-machine (M2M). First, a new design criterion to guarantee worst performance enough high has been employed instead of conventional average performance in order to define dependability. Second, motion and sensor characteristics of targeting machines have been mathematically described. Then various multiple layers technologies based on UWB wireless, cognitive protocol, fault tolerant routing, cipher etc. have been proposed and jointly optimized, and medical BAN has been implemented applying these technologies and evaluated them in clinical experiment with collaborating institutes.

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2011.04  -  2015.03  Investigator(s): Yayoi Satsumoto

  • Grant-in-Aid for JSPS Fellows

    Project Year: 2011.04  -  2012.03  Investigator(s): Kouji Enda

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2009.04  -  2013.03  Investigator(s): Ryuji Kohno

     View Summary

    This research focuses on design and investigation of (1) highly reliable and safe vehicle traffic networks including intelligent safety controlling network with a communicating group of cars, and a real time remote monitoring and maintaining networks with a car dealer as a hub, and as their extension, (2) a global environmental monitoring and maintaining network. In order to pursue the research, novel technologies on cognitive radio and network, ultra wide band (UWB) have been proposed and investigated. As a result, innovation in safety driving cars and global environmental monitoring and maintaining has been achieved.

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2005.04  -  2009.03  Investigator(s): Ryuji Kohno

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Other external funds procured 【 display / non-display

  • Joint Development and Field Test with Telecommunication and Oil Companies of Abu Dhabi for High Quality of Life with Medicine, Wellness, and Sport Using Information Communication Technologies

    Offer organization: Ministry of Economy, Trade and Industry 

    Project Year: 2020.07  -  2021.03  Investigator(s): Ryuji Kohno

  • Reliable Technologies and ROVER; Models for Verified Wireless Body-centric Transmission and Localization

    Offer organization: European Commission  European Commission

    Project Year: 2020.01  -  2024.12 

  • Kanagawqa Medical Device Regulatory Science Center

    Offer organization: Local Government 

    Project Year: 2015.04  -  2019.03  Investigator(s): Ryuji Kohno

  • Innovative Integration between Medicine and Engineering Based on Information Communications Technology

    Offer organization: Ministry of Education, Culture, Sports, Science and Technology 

    Project Year: 2008.11  -  2013.03  Investigator(s): Ryuji Kohno

  • Innovative Integration between Medicine and Engineering Based on Information Communications Technology

    Offer organization: Ministry of Education, Culture, Sports, Science and Technology 

    Project Year: 2013.09  -  2014.03  Investigator(s): Ryuji Kohno

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Presentations 【 display / non-display

  • Medical ICT Center of Yokohama National University -Joint Research, Development, Standard, Regulation and Business -

    Ryuji Kohno  [Invited]

    Seminar in IMT Atlantique  (Brest, France)  2018.09.27  

  • Ultra Reliable Wireless Ad-Hoc Networks for 5G and IoT/M2M Applications

    Ryuji Kohno  [Invited]

    Summer School for Coding Theory & Signal Processing in 5G Era Center for Advanced Wireless Technologies (AdWiTech)  (Telkom University, Bandung, Indonesia)  2018.08.02  

  • Overview of IG-DEP Activities on Enhanced Dependability in Wireless Networks for Automotive and Other Use Cases

    Ryuji Kohno, Jussi Haapola

    Plenary Keynote, International Standard IEEE802.15 Plenary Meeting  (San Diego, USA )  2018.07.11  

  • Dependable Wireless Body Area Network(BAN), Cloud and AI Data Mining Repository for Medical Healthcare Big Data - Joint Research, Development, Standard, Regulation and Business

    Ryuji Kohno  [Invited]

    Seminar for Anna University, Indea  (Yokohama, Japan)  2018.06.27  

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Preferred joint research theme 【 display / non-display

  • Engineering tests clerical work concerning ka band land moving object communication

  • Adaptive Array Antennas Techniques and Applications

  • Research on adjustment radio with software antenna

  • R&D of Information Communication Technologies for Madical Care and Social Welfare Systems

  • Microwave Wireless Power Transmission

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Past of Collaboration and Commissioned Research 【 display / non-display

  • ROVER Reliable Technologies and Models for Verified Wireless Body Centric Transmission and Localization"

    Offer organization: European Commission   International Cooperative Research  

    Project Year: 2020.01  -  2024.12 

  • Dependable Wireless Body Area Networks to Support Search and Rescue and Medical Treatment in Disaster Scenarios

    Offer organization: University of Canterbury, New Zealand   International Cooperative Research  

    Project Year: 2016.09  -  2018.03 

  • Development of Carrier Robotic System Using Structuring Environmental Information

    Cooperative Research within Japan  

    Project Year: 2007  -  2009 

  • R&D of Intelligent Geolocation Sensor Networks Based on UWB and Applications to Medicine, Home, and Office

    Cooperative Research within Japan  

    Project Year: 2005  -  2009.03 

  • Research on Mobile Satellite Communications

    Funded Research offered by Enterprises  

    Project Year: 2000  -   

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Council/Academic activity outside the university 【 display / non-display

  • University of Oulu Research Institute Japan-CWC日本株式会社

    2018.01
    -
    2020.12

    Others   CEO

  • University of Oulu, Finland

    2018.01
    -
    2020.12

    Others   Distinguished Professor

  • IEEE International Symposia on Medical Information and Communications Technology (ISMICT), International Steering Committee

    2015.03
     
     

    Others   Chair