Ibaraki University's
Graduate School of Science and Engineering (Engineering)
Department of Computer and Information Sciences

顔写真
Professor

HABUCHI Hiromasa


Other affiliation / position

  1. Center for Information Technology

Academic background

  1. Saitama University Faculty of Engineering 電気工学科 1987
  2. Saitama University Graduate School, Division of Science and Engineering 生産情報科学 1992 Completed

Academic degrees

  1. 博士(学術) Saitama University
  2. 工学修士 Saitama University

Current state of research and teaching activities

Studies on Communication Theory and Systems

Research Areas

  1. Information and Communication Engineering

Research keywords

  1. Modulation and Demodulation, Access Control Scheme, Synchronization, Wireless Communications, Optilcal Wireless Communications, Broadcasting, Intelligent Transport System, Home Networks

Subject of research

  1. Study on M-ary Orthogonal Modulation Systems The synchronization methods for code-shit-keying(CSK) and the design of non-orthogonal sequences for performance improvement are investigated. Moreover, and the combination of the access control scheme and CSK are evaluated.
  2. Study on Spread Spectrum Communication Systems The enhanced schemes of the delay locked loop (DLL), the design of spreading codes, and the capacity of code division multiple access (CDMA) are investigated.
  3. Study on Ultra Wide-Band Communications The digital pulse modulation, pulse design and constructions, and the synchronization systems are investigated. 2002-Present
  4. Study on Optical Communication Systems The spreading code design and the modulation schemes for optical wireless communicaitons are investigated in the presence of scintillation and noise.
  5. A Study of communication protocol for ITS The error contol scheme for location based local broadcasting systems is investigated. 2002-Present
  6. A Study on Acquisition Systems and Tracking Systems The acquisition systems and tracking systems are investigated. In particular, the delay locked loop system is considerd.
  7. A Study on Wireless Networks The throughput improvement of wireless networks is considers. In particular, access control schemes suitable for the various wireless networks are investigated.

Proposed theme of joint or funded research

  1. A study on communicarion schemes for ITS (キーワード) Vehicle-to-Vehicle communications, Road-to-Vehicle coomunications, Hierarchy modulations, Error control schemes Technical consultation
  2. A study on Spread-Spectrum communication systems (キーワード) Spreading codes, Pseudo-noise sequences, Modulation schemes, Synchronization, Acquisition, Tracking, Access Contol Scheme Technical consultation
  3. A study on theoretical analysis method for optical wireless communications (キーワード) Intensity modulation, Scintillation, Opt-electrotransforming, Multiple access scheme Technical consultation

Papers

  1. Research paper (international conference proceedings) Joint Design of Synchronization Signal Embedded Optical Wireless Differential OOK Yuta Asano, Hiromasa Habuchi, Yusuke Kozawa Proceedings of 2nd International Conference and Exhibition on Visible Light Communications ICEVLC/ 2018 2018/03/16
  2. Research paper (international conference proceedings) Joint Error Correcting Codes in Underwater RGB-LED Parallel Communication: Turbo or LDPC? San Sun, Hiromasa Habuchi, Yusuke Kozawa Proceedings of the RISP International Workshop on Nonlinear Circuits, Communication and Signal Processing NCSP/ 2018, 331-334 2018/03/06
  3. Research paper (international conference proceedings) Joint Performance Evaluation of Hybrid VN-CSK/PAM for Lighting Constrained Visible Light Communications Keisuke Osawa, Hiromasa Habuchi, Yusuke Kozawa Proceedings of the RISP International Workshop on Nonlinear Circuits, Communication and Signal Processing NCSP/ 2018, 327-330 2018/03/06
  4. Research paper (scientific journal) Joint Hybrid PWM/DPAM Dimming Control for Digital Color Shift Keying Using RGB-LED Array Jumpei Okumura, Yusuke Kozawa, Yohtaro Umeda, and Hiromasa Habuchi IEEE Journal on Selected Areas in Communications Vol.36/ No.1, 44-52 2018/01
  5. Research paper (international conference proceedings) Joint Proposal of Optical Wireless Turbo Coded APPM System Ran Sun, Hiromasa Habuchi and Yusuke Kozawa Proceedings of 27th International Telecommunication Networks and Applications Conference ITNAC/ 2017, 424-428 2017/11/24

Research presentations

  1. Oral presentation(general) オンオフ信号形式型M系列を用いる光PPMのビット誤り率 電子情報通信学会東京支部学生会研究発表会 2007/03/03
  2. Oral presentation(general) MCS/SSを用いたPull型パケット補間法のブロッキング確率 電子情報通信学会東京支部学生会研究発表会 2006/03/04

Prizes

  1. 活動功労賞 2011/09/14
  2. 感謝状 2011/05/30
  3. 編集活動感謝状 2009/09/16
  4. 編集活動感謝状 2007/12/14
  5. YRP賞 2007/10/25

Alloted class

  1. Information Literacy
  2. Advanced Communication Systems
  3. Scholarly Information Literacy
  4. Communications Theory

Memberships of academic societies

  1. The Institute of Electrical and Electronics Engineers, Inc.
  2. The Institute of Electronics, Information and Communication Engineers
  3. 信号処理学会 2014/03/01-Present
  4. 情報理論とその応用学会 1998/04/01-2011/05/31

Committee Career

  1. The Institute of Electronics, Information and Communication Engineers ワイドバンドシステム研究専門委員会 委員長 2014/05-Present
  2. The Institute of Electrical and Electronics Engineers, Inc. Executive Committee Member on IEEE Tokyo Section 2013/01/01-2014/12/31
  3. The Institute of Electrical and Electronics Engineers, Inc. Chair of Student Activities Committee on IEEE Tokyo Section 2013/01/01-2014/12/31
  4. The Institute of Electronics, Information and Communication Engineers ワイドバンドシステム研究専門委員会 専門委員 2011/05-2013/05
  5. The Institute of Electronics, Information and Communication Engineers ITS研究専門委員会 委員長 2011/05-2013/05