Hiromasa HABUCHIProfessor

■Researcher basic information

Organization

  • Vice President
  • Institution for Information Management and Strategy 　 Director of Institution for Information Management and Strategy
  • College of Engineering Department of Computer and Information Sciences
  • Graduate School of Science and Engineering（Master's Program） Major in Computer and Information Sciences
  • Graduate School of Science and Engineerin（Doctoral Program） Major in Society's Infrastructure Systems Science
  • Faculty of Applied Science and Engineering Domain of Computer and Information Sciences

Research Areas

  • Informatics, Information networks, Communication Systems and Communication Theory
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Communication and network engineering, Information and Communication Engineering

Research Keyword

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

Degree

  • 1992年03月　博士（学術）（埼玉大学）

Educational Background

  • Apr. 1989 - Mar. 1992, 埼玉大学大学院, 理工学研究科博士後期課程, 生産情報科学専攻
  • Apr. 1987 - Mar. 1989, 埼玉大学大学院, 工学研究科, 電気工学専攻
  • Apr. 1983 - Mar. 1987, Saitama University, Faculty of Engineering, 電気工学科

Career

  • Apr. 2022 - Present, Ibaraki University, 副学長（情報統括・セキュリティ）
  • Apr. 2010 - Present, Ibaraki University, Faculty of Engineering, Professor
  • Sep. 2014 - Mar. 2022, Ibaraki University, 学長特別補佐

Member History

  • Apr. 2020 - Present, 論文編集委員, 信号処理学会
  • May 2016 - Present, ワイドバンドシステム研究専門委員会 顧問, The Institute of Electronics, Information and Communication Engineers
  • May 2013 - Present, ＩＴＳ研究専門委員会 顧問, The Institute of Electronics, Information and Communication Engineers
  • Jan. 2009 - Present, VTS Tokyo/JC Chapter 委員, The Institute of Electrical and Electronics Engineers, Inc.
  • Jan. 2021 - Dec. 2022, Past Treasurer of IEEE Japan chapter, The Institute of Electrical and Electronics Engineers, Inc.
  • Jan. 2021 - Dec. 2022, Past Treasurer of IEEE Tokyo Section, The Institute of Electrical and Electronics Engineers, Inc.
  • Jan. 2019 - Dec. 2020, Treasurer of IEEE Tokyo Section, The Institute of Electrical and Electronics Engineers, Inc.
  • Jan. 2019 - Dec. 2020, Treasurer of IEEE Japan chapter, The Institute of Electrical and Electronics Engineers, Inc.
  • Jun. 2019 - May 2020, 東京支部支部長, 電子情報通信学会
  • May 2018 - May 2019, 東京支部 次期支部長, The Institute of Electronics, Information and Communication Engineers
  • 01 Jan. 2019, Treasure of IEEE Tokyo Section, The Institute of Electrical and Electronics Engineers, Inc.
  • 01 Jan. 2019, Treasure of IEEE Japan chapter, The Institute of Electrical and Electronics Engineers, Inc.
  • May 2015 - May 2016, 情報通信基礎サブソサイエティ 委員長, The Institute of Electronics, Information and Communication Engineers
  • May 2014 - May 2016, ワイドバンドシステム研究専門委員会 委員長, The Institute of Electronics, Information and Communication Engineers
  • Jan. 2013 - Dec. 2014, Executive Committee Member on IEEE Tokyo Section, The Institute of Electrical and Electronics Engineers, Inc.
  • May 2011 - May 2013, ＩＴＳ研究専門委員会 委員長, The Institute of Electronics, Information and Communication Engineers
  • May 2011 - May 2013, ワイドバンドシステム研究専門委員会 専門委員, The Institute of Electronics, Information and Communication Engineers
  • Jan. 2011 - Dec. 2012, Vice chair of Student Activities Committee, The Institute of Electrical and Electronics Engineers, Inc.
  • May 2008 - May 2011, ワイドバンドシステム研究専門委員会 副委員長, The Institute of Electronics, Information and Communication Engineers
  • May 1998 - May 2011, ＩＴＳ研究専門委員会委員, The Institute of Electronics, Information and Communication Engineers
  • Dec. 2005 - Jan. 2009, VTS Japan Chapter Treasurer, The Institute of Electrical and Electronics Engineers, Inc.
  • Dec. 2005 - Jan. 2009, VTS Japan Chapter Treasurer, The Institute of Electrical and Electronics Engineers, Inc.
  • Jan. 2009, VTS Japan Chapter 委員, The Institute of Electrical and Electronics Engineers, Inc.
  • May 2005 - May 2007, 東京支部評議委員, The Institute of Electronics, Information and Communication Engineers
  • May 2003 - May 2007, ソサイエティ論文編集委員会 編集委員, The Institute of Electronics, Information and Communication Engineers
  • May 2001 - May 2007, 通信方式研究専門委員会委員, The Institute of Electronics, Information and Communication Engineers
  • May 2004 - Apr. 2007, 時限研究会センサネットワーク研究専門委員会委員, The Institute of Electronics, Information and Communication Engineers
  • May 2001 - May 2003, 学会誌編集委員, The Institute of Electronics, Information and Communication Engineers
  • May 2001 - May 2003, 基礎・境界ソサイエティ運営委員 会計幹事, The Institute of Electronics, Information and Communication Engineers
  • May 1993 - May 2003, スペクトル拡散研究専門委員会委員, The Institute of Electronics, Information and Communication Engineers
  • Jan. 2003, ソサイエティ論文編集委員会 査読委員, The Institute of Electronics, Information and Communication Engineers
  • May 1997 - May 1998, 情報通信基礎サブソサイエティ会計幹事, The Institute of Electronics, Information and Communication Engineers
  • May 1995 - May 1998, スペクトル拡散研究専門委員会幹事, The Institute of Electronics, Information and Communication Engineers

■Research activity information

Award

  • Sep. 2011, 活動功労賞, 電子情報通信学会通信ソサイエティ
  • May 2011, 感謝状, 電子情報通信学会通信ソサイエティ英文論文誌編集委員会
  • Sep. 2009, 編集活動感謝状, 電子情報通信学会基礎・境界ソサイエティ
  • Dec. 2007, 編集活動感謝状, 電子情報通信学会基礎・境界ソサイエティ
  • Oct. 2007, ＹＲＰ賞, YRPアワード委員会
    Fumie Ono
  • 2005, 電子情報通信学会功労感謝状
  • 1995, 学術奨励賞

Paper

  • Intelligent Lighting System Incorporating Two Different Data Transmission Methods
    Tianhe Huang; Yusuke Kozawa; Hiromasa Habuchi, Last
    IEEE Access, Mar. 2025, [Reviewed]
  • Visible-light Multimodal and Multidirectional Information Delivery Method using Lenticular Lens　　　　　　　　　　　　　　　
    Takahito Matsufuji; Yusuke Kozawa; Hiromasa Habuchi, Last
    2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, Mar. 2025, [Reviewed]
  • Data Transmission Efficiency Taking Account of Synchronization Property in Modified MPPM System with RGB-LED　　　　　　　　　　　　　　　
    Riku Sakai; Yusuke Kozawa; Hiromasa Habuchi, Last
    2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, Mar. 2025, [Reviewed]
  • Extended VN-CodeSK System Embedding (L,L) Threshold Secret Sharing Scheme　　　　　　　　　　　　　　　
    Junya Yada; Yusuke Kozawa; Hiromasa Habuchi, Last
    2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, Mar. 2025, [Reviewed]
  • Design and Analysis of Enhanced IM/DD System with Nonorthogonal Code Shift Keying and Parallel Transmission
    Nobuyoshi Komuro; Hiromasa Habuchi, Last, Providing Optical Wireless Communications (OWCs) is desirable for high data transmission efficiency. Intensity Modulation and Direct Detection (IM/DD) is widely adopted for its simplicity and practicality. Among various modulation schemes, Code Shift Keying (CSK) has demonstrated superior transmission efficiency compared to On-Off Keying (OOK) and Pulse Position Modulation (PPM). Prior research has shown that CSK performance can be further enhanced through parallel transmission and code concatenation techniques. However, the direct application of concatenated CSK to parallel transmission reduces the number of available code combinations as the concatenation level increases, potentially lowering modulation efficiency. This study proposes an advanced transmission scheme that integrates parallel transmission with a multi-level intensity adjustment mechanism. The proposed method preserves a high number of distinguishable transmission symbols, thereby achieving higher data transmission rates. Analytical derivations for transmission efficiency are provided for single-user scenarios, and numerical simulations validate the effectiveness of the proposed system. The key contributions of this work include mitigating symbol reduction in nonorthogonal CSK with parallel transmission and adjusting the multi-level intensity to enhance overall system performance. The results confirm that the proposed scheme significantly improves the efficiency and scalability of nonorthogonal CSK in OWC applications., MDPI AG
    Photonics, 19 Feb. 2025, [Reviewed]
  • Code Tracking System Design of Optical-Wireless Code Shift Keying with Concatenated MPOMs　　　　　　　　　　　　　　　
    Norito Baba; Hiromasa Habuchi; Nobuyoshi Komuro, Corresponding
    IEEE 13th Global Conference on Consumer Electronics, Oct. 2024, [Reviewed]
  • One-hop On-demand WSN Based on Multi-carrier CDMA with Orthogonal M-sequences　　　　　　　　　　　　　　　
    Shin Hirayama; Yusuke Kozawa; Hiromasa Habuchi, Last
    IEEE 13th Global Conference on Consumer Electronics, Oct. 2024, [Reviewed]
  • Frame Acquisition Scheme for Optical-wireless Modified MPPM　　　　　　　　　　　　　　　
    Riku Sakai; Yusuke Kozawa; Hiromasa Habuchi, Last
    IEEE 13th Global Conference on Consumer Electronics, Oct. 2024, [Reviewed]
  • Enhanced Illumination-light VN-CodeSK System with Secret Sharing Scheme　　　　　　　　　　　　　　　
    Junya Yada; Yusuke Kozawa; Hiromasa Habuchi, Last
    IEEE 13th Global Conference on Consumer Electronics, Oct. 2024, [Reviewed]
  • Channel Capacity Evaluation of Digital Color Shift Keying with Spatial Modulation Technique　　　　　　　　　　　　　　　
    Naoki Ishitsuka; Yusuke Kozawa; Hiromasa Habuchi, Last
    Journal of Signal Processing, Jul. 2024, [Reviewed]
  • Maximizing Transmission Rate of Variable xASK-CodeSK with Illumination Device　　　　　　　　　　　　　　　
    Yu Ichitsuka; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2024 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 27 Feb. 2024, [Reviewed]
  • Channel Capacity Evaluation of Digital Color Shift Keying with Spatial Modulation Technique　　　　　　　　　　　　　　　
    Naoki Ishitsuka; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2024 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 27 Feb. 2024, [Reviewed]
  • Suitable Color Toning for MIMO LED Illumination-Light Communication System　　　　　　　　　　　　　　　
    Tianhe Huang; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2024 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 27 Feb. 2024, [Reviewed]
  • Enhancement of optimized CSK for USLIPT　　　　　　　　　　　　　　　
    Honoka Yoshinaga; Yusuke Kozawa; Hiromasa Habuchi, Last, IEEE
    IEEE Global Communication Conference, 06 Dec. 2023, [Reviewed]
  • VN-CodeSK Based Optical Fingerprint System with Non-uniform Grid Interval According to μ-Law　　　　　　　　　　　　　　　
    Yuta Ochiai; Daisuke Ogawa; Yusuke Kozawa; Hiromasa Habuchi, Last, IEEE
    IEEE 12th Global Conference on Consumer Electronics, 12 Oct. 2023, [Reviewed]
  • Theoretical Analysis of Variable xASK-CodeSK System for SLIPT　　　　　　　　　　　　　　　
    Yu Ichitsuka; Yusuke Kozawa and Hiromasa Habuchi, Last, IEEE
    IEEE 12th Global Conference on Consumer Electronics, 10 Oct. 2023, [Reviewed]
  • MIMO LED Illumination-Light Communication that Fuses Two Kinds of Data Different in Property　　　　　　　　　　　　　　　
    Tenwa Koh; Yusuke Kozawa; Hiromasa Habuchi, Last, IEEE
    IEEE 12th Global Conference on Consumer Electronics, 10 Oct. 2023, [Reviewed]
  • （2,2）しきい値秘密分散法を用いる拡張VN-CodeSK照明光通信方式
    幡豆亮平; 小澤佑介; 羽渕裕真, Last, 電子情報通信学会
    電子情報通信学会論文誌B, 01 Aug. 2023, [Reviewed]
  • Performance Evaluation of Variable xASK-CodeSK Scheme
    Yu Ichitsuka; Yusuke Kozawa; Hiromasa Habuchi, Research Institute of Signal Processing, Japan
    Journal of Signal Processing, 01 Jul. 2023
  • Non-uniform Grid-based Optical Fingerprint Positioning on VN-CSK System　　　　　　　　　　　　　　　
    Daisuke Ogawa; Yuta Ochiai; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2023 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 01 Mar. 2023, [Reviewed]
  • Comparison of Trilateration Method and Optical Fingerprinting Method Based on Optical Wireless VN-CodeSK System　　　　　　　　　　　　　　　
    Yuta Ochiai; Daisuke Ogawa; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2023 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 01 Mar. 2023, [Reviewed]
  • Enhanced xASK-CodeSK for SLIPT　　　　　　　　　　　　　　　
    Yu Ichitsuka; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2023 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 01 Mar. 2023, [Reviewed]
  • Impact of systematically constructed nonorthogonal code shift keying for optical code division multiple access
    Nobuyoshi Komuro; Hiromasa Habuchi, Last, The Optical Society, OSA
    Optics Continuum, Jan. 2023, [Reviewed]
  • Influence of Reflected Light in Illumination-Light VN-CodeSK Based Positioning Systems　　　　　　　　　　　　　　　
    Yuta Ochiai; Daisuke Ogawa; Yusuke Kozawa; Hiromasa Habuchi, Last, IEEE
    International Symposium on Information Theory and Its Applications, 19 Oct. 2022, [Reviewed]
  • Theoretical Analysis of Packet Success Rate Considering Delay Fluctuation of Arrival Timing of Packets on Three-Mode Based On-Demand WSN　　　　　　　　　　　　　　　
    Masanori Suetake; Hiromasa Habuchi, Corresponding, IEEE
    IEEE 11th Global Conference on Consumer Electronics, 18 Oct. 2022, [Reviewed]
  • Design of xASK-CodeSK System for Simultaneous Visible Light Wireless Information and Power Transfer　　　　　　　　　　　　　　　
    Yu Ichitsuka; Yusuke Kozawa and Hiromasa Habuchi, Last, IEEE
    IEEE 11th Global Conference on Consumer Electronics, 18 Oct. 2022, [Reviewed]
  • Search-Area Partitioning Approach to Optical,Fingerprint Positioning System　　　　　　　　　　　　　　　
    Daisuke Ogawa; Yuta Ochiai; Yusuke Kozawa and Hiromasa Habuchi, Last, IEEE
    IEEE 11th Global Conference on Consumer Electronics, 18 Oct. 2022, [Reviewed]
  • RGB-Based Secret Sharing Illumination-Light Communications With VN-CodeSK　　　　　　　　　　　　　　　
    Ryohei Hazu; Yusuke Kozawa and Hiromasa Habuchi, Last, IEEE
    IEEE 11th Global Conference on Consumer Electronics, 18 Oct. 2022, [Reviewed]
  • 〔Major achievements〕Effects of Synchronous Timing Gap on Energy-Efficient MC-CDMA On-Demand WSNs Using Packet Combining Scheme
    Masanori Suetake; Gen Li; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, JSP
    Journal of Signal Processing, 15 Jul. 2022, [Reviewed]
  • 航空交通管理におけるデジタル衛星通信の需給に関する基礎的分析
    本江信夫; 平田輝満; 羽渕裕真, Last
    日本航空宇宙学会論文集, 07 Apr. 2022, [Reviewed]
  • Simple Optical Fingerprint Method for Indoor Visible-Light Communications　　　　　　　　　　　　　　　
    Daisuke Ogawa; Kouki Taruishi; Yusuke Kozawa; Hiromasa Habuchi, Last, RISP
    2022 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 28 Feb. 2022, [Reviewed]
  • Enhancement of VN-CodeSK with VSS System on RGB Illumination-Light Parallel Communication　　　　　　　　　　　　　　　
    Ryohei Hazu; Keisuke Manaka; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, RISP
    2022 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 28 Feb. 2022, [Reviewed]
  • Impact of Packet Synchronization Timing Gaps on MC-CDMA based 3-modes On-demand WSN with Packet Combining Scheme　　　　　　　　　　　　　　　
    Masanori Suetake; Gen Li; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, RISP
    2022 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, 28 Feb. 2022, [Reviewed]
  • Chlorophyll concentration-based CSK constellation point design for underwater SLIPT with priority on communication performance　　　　　　　　　　　　　　　
    Takuma Kogo; Yusuke Kozawa; Hiromasa Habuchi, Last
    The 24th International Symposium On Wireless Personal Multimedia Communications, 16 Dec. 2021, [Reviewed]
  • Theoretical analysis of selective variable rate multi-pulse pulse position modulation for visible light communications　　　　　　　　　　　　　　　
    Tatsuya Iwase; Yusuke Kozawa; Hiromasa Habuchi, Last
    The 24th International Symposium On Wireless Personal Multimedia Communications, 16 Dec. 2021, [Reviewed]
  • Visual Secret Sharing Based RGB Parallel Transmission System　　　　　　　　　　　　　　　
    Ryohei Hazu; Yusuke Kozawa; Hiromasa Habuchi, Last
    The 24th International Symposium On Wireless Personal Multimedia Communications, 16 Dec. 2021, [Reviewed]
  • 児童・生徒向け情報セキュリティ対策を実施した附属学校ネットワークの構築
    山本 一幸; 大瀧 保広; 野口 宏; 西原 忠史; 羽渕 裕真; 外岡 秀行, 学術情報処理研究
    学術情報処理研究編集委員会, 01 Nov. 2021, [Reviewed]
  • High Accuracy Positioning System on Indoor Optical Wireless VN-CSK System　　　　　　　　　　　　　　　
    Hikari Iizuka; Ran Sun; Hiromasa Habuchi; Yusuke Kozawa, Lead, 電子情報通信学会
    Proceedings of the RISP International Workshop on Nonlinear Circuits, Communication and Signal Processing, 29 Oct. 2021, [Invited]
  • Novel Frame Synchronization System for RGB-LED Parallel Transmission Employing BPPM Format　　　　　　　　　　　　　　　
    Jyo Matsushima; Hiromasa Habuchi, Last
    20th International Symposium on Communications and Information Technologies, 22 Oct. 2021, [Reviewed]
  • Code Tracking System for Optical-Wireless Code-Shift-Keying Using Two-Layered PN Code　　　　　　　　　　　　　　　
    Ryouta Kuriyama; Hiromasa Habuchi, Corresponding
    20th International Symposium on Communications and Information Technologies, 22 Oct. 2021, [Reviewed]
  • Improved Optical Fingerprint Positioning System for Illumination-Light VN-CSK Communications　　　　　　　　　　　　　　　
    Daisuke Ogawa; Kouki Taruishi; Yusuke Kozawa; Hiromasa Habuchi, Corresponding, IEEE
    IEEE 10th Global Conference on Consumer Electronics, 12 Oct. 2021, [Reviewed]
  • Design of Low-Power Mode Based On-Demand WSN with MC-CDMA　　　　　　　　　　　　　　　
    Masanori Suetake; Yusuke Kozawa; Hiromasa Habuchi, Corresponding, IEEE
    IEEE 10th Global Conference on Consumer Electronics, 12 Oct. 2021, [Reviewed]
  • Design of VN-CSK System Based Parallel Transmission with RGB-LED　　　　　　　　　　　　　　　
    Kouki Taruishi; Yusuke Kozawa; Hiromasa Habuchi, Corresponding, IEEE
    IEEE 10th Global Conference on Consumer Electronics, 12 Oct. 2021, [Reviewed]
  • 〔Major achievements〕Design and analysis of optical wireless code shift keying with nonorthogonal sequences
    Nobuyoshi Komuro; Hiromasa Habuchi, Last, OSA
    OSA Continuum, 26 Apr. 2021, [Reviewed]
  • Nonorthogonal CSK/SS ALOHA system under MANET environment
    Nobuyoshi Komuro; Hiromasa Habuchi, Last, Elsevier BV
    KICS ICT Express, 23 Mar. 2021, [Reviewed]
  • Chlorophyll concentration-based CSK constellation point optimization for underwater SLIPT using time splitting receiver　　　　　　　　　　　　　　　
    Takuma Kogo; Yusuke Kozawa; Hiromasa Habuchi, Last
    IEEE Global Communications Conference, Workshop on Optical Wireless Communication, 07 Dec. 2020, [Reviewed]
  • Parallel Optical Wireless Communication System with Hierarchical Nonorthogonal Code Shift Keying　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi, Last
    4th International Conference on Telecommunications and Communication Engineering, 06 Dec. 2020, [Reviewed]
  • A Two-stage Coding Scheme by Using Two Kinds of PN Codes for RGB Parallel Optical Wireless Communication　　　　　　　　　　　　　　　
    Kouki Taruishi; Yusuke Kozawa; Hiromasa Habuchi, Corresponding
    2020 International Conference on Emerging Technologies for Communications, 04 Dec. 2020, [Reviewed]
  • Evaluation of Optical-Wireless Turbo Coded System Having Simple Self-Synchronization Method　　　　　　　　　　　　　　　
    Tomohiro Kiguchi; Yusuke Kozawa; Hiromasa Habuchi, Corresponding
    2020 International Conference on Emerging Technologies for Communications, 04 Dec. 2020, [Reviewed]
  • 茨城大学における遠隔授業／テレワーク支援
    大瀧保広; 嶌田敏行; 山本一幸; 野口宏; 佐藤伸也; 外岡秀行; 羽渕裕真, Last
    学術情報処理研究, 01 Dec. 2020, [Reviewed]
  • 問合せデータの分散表現を用いた分類
    山本一幸; 大瀧保広; 佐藤伸也; 嶌田敏行; 野口宏; 羽渕裕真; 外岡秀行, Last
    学術情報処理研究, 01 Dec. 2020, [Reviewed]
  • 〔Major achievements〕Theoretical Analysis of Illumination-Light VN-CSK Based Equal-Weight (2, 2) VSS with MPOMS Balancer　　　　　　　　　　　　　　　
    Keisuke Manaka; Liyuan Chen; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, IEEE 9th Global Conference on Consumer Electronics
    16 Oct. 2020, [Reviewed]
  • 〔Major achievements〕Advanced Turbo Code System with HPOS for FSO Strong Turbulence Channel
    Ran Sun; Hiromasa Habuchi; Yusuke Kozawa, JSP
    Journal of Signal Processing, 15 Jul. 2020, [Reviewed]
  • 〔Major achievements〕Free Space Optical Turbo Coded Communication System with Hybrid PPM-OOK Signaling
    Corresponding, IEICE
    IEICE Transaction on Fundamentals, 01 Jan. 2020, [Reviewed]
  • Frame Synchronization Performance of Optical-Wireless Hybrid BPPM-OOK System　　　　　　　　　　　　　　　
    Tomohiro Kiguchi; Hiromasa Habuchi; Ran Sun; Yusuke Kozawa, Corresponding, ITNAC
    International Telecommunication Networks and Applications Conference, 27 Nov. 2019, [Reviewed]
  • Theoretical Analysis of Equal-Weight (2,2) VSS on VN-CSK Illumination Light Communication　　　　　　　　　　　　　　　
    Keisuke Manaka; Liyuan Chen; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, ITNAC
    International Telecommunication Networks and Applications Conference, 27 Nov. 2019, [Reviewed]
  • Intensity Modulation Direct Detection Optical Wireless Communication with Nonorthogonal Code Shift Keying　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi, Last, IEEE
    IEEE 8th Global Conference on Consumer Electronics, 17 Oct. 2019, [Reviewed]
  • Implementation of a Scalable Interactive Visualization Environment to Support Information Sharing and Decision-Making in Mega Disasters　　　　　　　　　　　　　　　
    Ryo Nakai; Tomoyuki Ishida; Hiromasa Habuchi, Last, ReBICTE
    Research Briefs on Information & Communication Technology Evoluti, 01 Oct. 2019, [Reviewed]
  • Proposal of a High-Presence Japanese Traditional Crafts Presentation System integrated with Different Cultures　　　　　　　　　　　　　　　
    Yangzhicheng Lu; Tomoyuki Ishida; Akihiro Miyakawa; Yoshitaka Shibata; Hiromasa Habuchi
    The 22nd Springer International Conference on Network-Based Information Systems, Sep. 2019, [Reviewed]
  • Proposal of Interactive Information Sharing System using Large Display for Disaster Management　　　　　　　　　　　　　　　
    Ryo Nakai; Tomoyuki Ishida; Noriki Uchida; Yoshitaka Shibata; Hiromasa Habuchi
    The 22nd Springer International Conference on Network-Based Information Systems, Sep. 2019, [Reviewed]
  • 情報セキュリティインシデント対応のための茨大型情報共有システムの構築と検証
    山本一幸; 大瀧保広; 野口宏; 羽渕裕真; 外岡 秀行
    学術情報処理研究, Sep. 2019, [Reviewed]
  • Proposal of Equal-Weight (2,2) Visual Secret Sharing Schemes on VN-CSK Illumination Light Communication　　　　　　　　　　　　　　　
    Keisuke Manaka; Liyuan Chen; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, IEEE
    IEEE Asia-Pacific Wireless Communications Symposium, 29 Aug. 2019, [Reviewed]
  • Proposal of Frame Synchronization Method for Optical Turbo Coded System with Hybrid PPM-OOK Signaling　　　　　　　　　　　　　　　
    Tomohiro Kiguchi; Ran Sun; Hiromasa Habuchi; Yusuke Kozawa, Corresponding, IEEE
    IEEE Asia-Pacific Wireless Communications Symposium, 29 Aug. 2019, [Reviewed]
  • Theoretical Analysis of Frame Error Detecting Schemes for Optical-Wireless Advanced Framed-DOOK System
    Yuta Asano; Ran Sun; Hiromasa Habuchi; Yusuke Kozawa, Corresponding
    Journal of Signal Processing, Jul. 2019, [Reviewed]
  • 〔Major achievements〕Optical-Wireless VN-CSK Communication-Based Indoor Positioning System
    Hikari Iizuka; Ran Sun; Hiromasa Habuchi; Yusuke Kozawa, Corresponding
    Journal of Signal Processing, Jul. 2019, [Reviewed]
  • Underwater Visible Light Simultaneous Wireless Information and Power Transfer using Inverse Pulse Position Modulation Scheme　　　　　　　　　　　　　　　
    Ryota Kimoto; Yusuke Kozawa; Yohtaro Umeda; Hiromasa Habuchi, Last
    Proceedings of the RISP International Workshop on Nonlinear Circuits, Communication and Signal Processing, 05 Mar. 2019, [Reviewed]
  • Effective Frame Error Detecting Scheme for Optical-Wireless Advanced Framed-DOOK System　　　　　　　　　　　　　　　
    Yuta Asano; Hiromasa Habuchi; Yusuke Kozawa, Corresponding
    Proceedings of the RISP International Workshop on Nonlinear Circuits, Communication and Signal Processing, 05 Mar. 2019, [Reviewed]
  • Proposal of a Furniture Layout Simulation System using Mixed Reality Technology　　　　　　　　　　　　　　　
    Lu Yangzhicheng; Tomoyuki Ishida; Hiromasa Habuchi, Last
    Proceedings of the 24th International Symposium on Artificial Life and Robotics, 24 Jan. 2019, [Reviewed]
  • Proposal of a Scalable Interactive Visualization Environment using Large Display in Emergency　　　　　　　　　　　　　　　
    Ryo Nakai; Tatsuya Ohyanagi; Tomoyuki Ishida; Hiromasa Habuchi, Last
    Proceedings of the 24th International Symposium on Artificial Life and Robotics, 24 Jan. 2019, [Reviewed]
  • Frame Error Detection Performance of Optical-Wireless Advanced Framed-DOOK System　　　　　　　　　　　　　　　
    Yuto Asano; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of International Conference on Signal Processing and Communication Systems, 17 Dec. 2018, [Reviewed]
  • Theoretical Analysis on Bit Error Rate of Visible-Light Variable N-parallel Code-Shift-Keying　　　　　　　　　　　　　　　
    Keisuke Osawa; Hiromasa Habuchi; and Yusuke Kozawa, IEICE
    IEICE Transaction on Fundamentals, 01 Dec. 2018, [Reviewed]
  • Enhanced On-demand WSN in terms of MC-CDMA with MPOMS　　　　　　　　　　　　　　　
    Yutaka Imaizumi; Hiromasa Habuchi; and Yusuke Kozawa, IEEE
    Proceedings of IEEE International Symposium on Intelligent Signal Processing and Communication Systems, 28 Nov. 2018, [Reviewed]
  • Exact Bit Error Rate Analysis for Optical-Wireless Framed-DOOK System　　　　　　　　　　　　　　　
    Yuto Asano; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of IEEE 7th Global Conference of Consumer Electronics, 12 Oct. 2018, [Reviewed]
  • BER Performance Impaired by Transmission Time Offset Between Users in Optical Wireless CSK/ACDMA System Using DMPOMs　　　　　　　　　　　　　　　
    Takashi Tokunaga; Hiromasa Habuchi; Yusuke Kozawa; and Ran Sun
    Proceedings of IEEE 7th Global Conference of Consumer Electronics, 12 Oct. 2018, [Reviewed]
  • Improved Packet Success Rate on MC-CDMA based On-demand WSN System with MPOMS　　　　　　　　　　　　　　　
    Yutaka Imaizumi; Hiromasa Habuchi; and Koichiro Hashiura
    Proceedings of IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium, 22 Aug. 2018, [Reviewed]
  • Proposal of VN-CSK System having Positioning Function　　　　　　　　　　　　　　　
    Hikari Iiduka; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium, 22 Aug. 2018, [Reviewed]
  • Theoretical Analysis of Optical-Wireless Code Shift Keying System using Extended Einarsson Code　　　　　　　　　　　　　　　
    Tomofumi Haruna; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium, 22 Aug. 2018, [Reviewed]
  • Proposal of a Disaster Support Expert System Using Accumulated Empirical Data　　　　　　　　　　　　　　　
    atsuya Ohyanagi; Tomoyuki Ishida; Noriki Uchida; Yoshitaka Shibata; and Hiromasa Habuchi
    Proceedings of The 12th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, 04 Jul. 2018, [Reviewed]
  • 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, 16 Mar. 2018, [Reviewed]
  • 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, 06 Mar. 2018, [Reviewed]
  • 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, 06 Mar. 2018, [Reviewed]
  • Hybrid PWM/DPAM Dimming Control for Digital Color Shift Keying Using RGB-LED Array
    Jumpei Okumura; Yusuke Kozawa; Yohtaro Umeda; and Hiromasa Habuchi, Institute of Electrical and Electronics Engineers Inc.
    IEEE Journal on Selected Areas in Communications, Jan. 2018, [Reviewed]
  • Improved synchronization scheme for indoor visible-light differential on-off keying
    Yuta Asano; Hiromasa Habuchi; Yusuke Kozawa, Institute of Electrical and Electronics Engineers Inc.
    2017 IEEE 6th Global Conference on Consumer Electronics, GCCE 2017, 19 Dec. 2017, [Reviewed]
  • SCDMA Capability of High-Density Code-Shift Keying using Dual MPOMs in Optical-Wireless Channel　　　　　　　　　　　　　　　
    Takashi Tokunaga; Hiromasa Habuchi; Yusuke Kozawa and Ran Sun
    Proceedings of 27th International Telecommunication Networks and Applications Conference, 24 Nov. 2017, [Reviewed]
  • Proposal of Optical Wireless Turbo Coded APPM System　　　　　　　　　　　　　　　
    Ran Sun; Hiromasa Habuchi and Yusuke Kozawa
    Proceedings of 27th International Telecommunication Networks and Applications Conference, 24 Nov. 2017, [Reviewed]
  • Inverse Pulse Position Modulation Schemes for Simultaneous Visible Light Wireless Information and Power Transfer　　　　　　　　　　　　　　　
    Ryota Kimoto; Yusuke Kozawa; Yohtaro Umeda; and Hiromasa Habuchi
    Proceedings of 27th International Telecommunication Networks and Applications Conference, 22 Nov. 2017, [Reviewed]
  • Rigorous Communication Success Probability of MC-CDMA with MPOMS Codes for Radio-On-Demand WSN　　　　　　　　　　　　　　　
    Tomohiro Okawa and Hiromasa Habuchi
    Proceedings of IEEE 6th Global Conference of Consumer Electronics, 26 Oct. 2017, [Reviewed]
  • On Suitable Pseudo-Noise Code for Optical-Wireless Hierarchical CSK-MPPM System　　　　　　　　　　　　　　　
    Masayuki Ishikawa and Hiromasa Habuchi
    Proceedings of IEEE 6th Global Conference of Consumer Electronics, 25 Oct. 2017, [Reviewed]
  • Yuto Asano, Hiromasa Habuchi, and Yusuke Kozawa　　　　　　　　　　　　　　　
    Improved Synchronization Scheme for Indoor Visible-Light Differential On-Off Keying
    Proceedings of IEEE 6th Global Conference of Consumer Electronics, 25 Oct. 2017, [Reviewed]
  • New Two-Layered Pseudo-Noise Code for Optical-Wireless Code-Shift Keying/SCDMA　　　　　　　　　　　　　　　
    Takashi Tokunaga; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of The Eighth International Workshop on Signal Design and Its Applications in Communications, 27 Sep. 2017, [Reviewed]
  • Impact of Framed-DOOK Optical Wireless System using Error Correcting Codes　　　　　　　　　　　　　　　
    Ran Sun; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of The Eighth International Workshop on Signal Design and Its Applications in Communications, 26 Sep. 2017, [Reviewed]
  • A Theoretical Analysis of Visible-Light Variable N-parallel Code-Shift-Keying in LOS Indoor Environments　　　　　　　　　　　　　　　
    Keisuke Osawa; Hiromasa Habuchi; and Yusuke Kozawa
    Proceedings of The Eighth International Workshop on Signal Design and Its Applications in Communications, 25 Sep. 2017, [Reviewed]
  • Performance Evaluation of Novel Optical-Wireless Variable N-parallel Code-Shift-Keying
    Keisuke Osawa; Hiromasa Habuchi and Yusuke Kozawa
    Proceeding of the 10th International Conference on Signal Processing and Communication Systems, 20 Dec. 2016
  • Theoretical Analysis of Visible-Light Code-Shift Keying Using Extended Pseudo-Orthogonal M-sequence in Line-of-Sight Link
    Shota Takayanagi; Hiromasa Habuchi and Yusuke Kozawa
    Proceeding of the 10th International Conference on Signal Processing and Communication Systems, 19 Dec. 2016, [Reviewed]
  • BER performance of Digital Color Shift Keying with Target Color Control
    Shunsuke Igata; Yusuke Kozawa; Yohtaro Umeda and Hiromasa Habuchi
    Proceeding of the 10th International Conference on Signal Processing and Communication Systems, 19 Dec. 2016, [Reviewed]
  • Influence of Synchronization Jitter on BER in Optical-Wireless CSK-MPPM System
    Masayuki Ishikawa and Hiromasa Habuchi
    Proceeding of Premier International Technical Conference of IEEE Region 10, 25 Nov. 2016, [Reviewed]
  • Turbo-code Optical Communication System Compatible with Partial Erasure Channel　　　　　　　　　　　　　　　
    Ran Sun; Hiromasa Habuchi and Yusuke Kozawa
    Proceeding of Premier International Technical Conference of IEEE Region 10, 24 Nov. 2016, [Reviewed]
  • "Design of an On-Demand Wireless Network Using Multi-Carrier CDMA with Modified Pseudo Orthogonal M-Sequence Sets
    Tomohiro Okawa and Hiromasa Habuchi
    Proceeding of Premier International Technical Conference of IEEE Region 10, 24 Nov. 2016, [Reviewed]
  • Enhancement of RGB Parallel Turbo-code System with UTPA in Optical Partial Erasure Channel　　　　　　　　　　　　　　　
    Ran Sun; Hiromasa Habuchi and Yusuke Kozawa
    Proceeding of 13th 2016 IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium (APWCS2016), 26 Aug. 2016, [Reviewed]
  • Novel Parallel Optical Turbo-code Communication System using RGB LEDs for Partial Erasure Channel　　　　　　　　　　　　　　　
    Ran Sun; Hiromasa Habuchi and Yusuke Kozawa
    The 31st International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2016), 13 Jul. 2016, [Reviewed]
  • Proposal of a Variable N-CSK with MPSC for an Intellectual Illumination Light Data Transmission System　　　　　　　　　　　　　　　
    Keisuke Osawa; Hiromasa Habuchi and Yusuke Kozawa
    The 31st International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2016), 13 Jul. 2016, [Reviewed]
  • New Optical-Wireless CSK-MPPM System with Modified Prime Sequence Code　　　　　　　　　　　　　　　
    Masayuki Ishikawa; Hiromasa Habuchi and Atsuhiro Takahashi
    The 31st International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2016), 13 Jul. 2016, [Reviewed]
  • Orthogonal Frequency and Code Division Multiplexing Using Modified Pseudo-Ternary M-Sequences Pair　　　　　　　　　　　　　　　
    Yuki Hosokawa; Hiromasa Habuchi
    The 31st International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2016), 11 Jul. 2016, [Reviewed]
  • Robust Turbo-Coded OOK System for Background Noise Alleviation and Frame Synchronization in Optical Wireless Channel
    Yuto Matsuda; Hiromasa Habuchi and Yusuke Kozawa, In this paper, optical wireless turbo-coded on-off-keying (OOK) systems have been investigated. These systems suffer from performance deterioration due to background noise and the occurrence of synchronization slip. To solve these problems, an optical wireless system that combines a framed differential OOK (framed-DOOK) system and a punctured turbo-coded system is proposed. The bit error rate (BER) performance ef the punctured turbo-coded framed-DOOK system is evaluated in an optical wireless channel. It is shown that the punctured turbo-coded framed-DOOK system can greatly improve the BER performance of the conventional punctured turbo-coded OOK system. Moreover, in the framed-DOOK systems, the BER of the punctured turbo-coded system is almost the same as that of the standard turbo-coded system. Therefore, the proposed punctured turbo-coded framed-DOOK system is more attractive than the conventional turbo-coded OOK systems for optical wireless communications., Research Institute of Signal Processing, Japan
    Journal of Signal Processing, Jul. 2016, [Reviewed]
  • Improved Code-Shift Keying Systems with Functional Pseudonoise Code in Optical-Wireless Channel
    Shota Takayanagi; Hiromasa Habuchi; Yusuke Takamaru and Yusuke Kozawa, In this paper, improved code-shift keying (CSK) systems with a functional pseudonoise (PN) code are considered for use in indoor optical-wireless channels. In CSK, increasing the number of optical PN codes improves the data rate. It is also effective for increasing the number of simultaneously transmitting optical PN codes. This method is named N-parallel CSK (N-CSK), which indicates the transmission of N codes. In order to enhance the data rate of CSK systems, optical PN code design has become one of the key areas of study. As such functional codes, in this paper we consider EPOM and POEPC, which can be generated by fusing two kinds of optical PN codes. CSK systems can implement two-stage demodulation, which demodulates every optical PN code. It is expected that two-stage demodulation will improve the bit error rate (BER) performance of CSK systems. In this paper, we combine two-stage demodulation with CSK systems: CSK using EPOM and N-CSK using POEPC. It was found that the BER of CSK systems can be improved by utilizing two-stage demodulation., Research Institute of Signal Processing, Japan
    Journal of Signal Processing, Jul. 2016, [Reviewed]
  • Differential-OOK System for Underwater Visible-Light Communications
    Mitsuru Saotome; Yusuke Kozawa; Yohtaro Umeda and Hiromasa Habuchi, Underwater wireless optical communication (UWOC) can provide higher-data-rate communication over moderate distances for new underwater applications. However, high-speed data transmission in UWOC is mainly limited by spectral attenuation in water and background noise. In this study, we propose an analytical underwater daylight noise model that incorporates the daylight simulation model SPCTRAL2 with an upwelling solar radiance model for the practical analysis of background light for UWOC. Moreover, we also consider a differential on-off-keying (DOOK) system in our simulation model. This DOOK system was proposed to reduce the effect of background noise in free-space optical communications. It was found that the effectiveness of the DOOK system can be verified by our new underwater daylight noise model. For example, for coastal water and harbor water, the DOOK system can improve BERs compared with an OOK system with a fixed threshold. In addition, the DOOK system can achieve a BER of less than10−6 in coastal water during daylight hours., Research Institute of Signal Processing, Japan
    Journal of Signal Processing, Jul. 2016, [Reviewed]
  • Impact of improved on-off-keyed turbo-code system in optical wireless channel　　　　　　　　　　　　　　　
    Yuto Matsuda; Hiromasa Habuchi and Yusuke Kozawa, NCSP
    Proceeding of 2016 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'16), 08 Mar. 2016, [Reviewed]
  • Differencial-OOK system for underwater visiblelight communications　　　　　　　　　　　　　　　
    Mitsuru Saotome; Yusuke Kozawa; Yohtaro Umeda and Hiromasa Habuchi, NCSP
    Proceeding of 2016 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'16), 08 Mar. 2016, [Reviewed]
  • Data-rate-enhanced optical-wireless code-shift-keying system having two-stage demodulation　　　　　　　　　　　　　　　
    Shota Takayanagi; Hiromasa Habuchi; Yusuke Takamaru and Yusuke Kozawa, NCSP
    Proceeding of 2016 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'16), 07 Mar. 2016, [Reviewed]
  • Rigorous symbol error rate analysis of hierarchical MPPM-CNK through optical wireless channel　　　　　　　　　　　　　　　
    Atsuhiro Takahashi; Hiromasa Habuchi and Yusuke Kozawa, NCSP
    Proceeding of 2016 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'16), 07 Mar. 2016, [Reviewed]
  • Underwater Turbo-code Optical Communication System Compatible with Partial Erasure Channel
    Ran Sun; Hiromasa Habuchi; Yusuke Kozawa
    PROCEEDINGS OF THE 2016 IEEE REGION 10 CONFERENCE (TENCON), 2016, [Reviewed]
  • Performance evaluation of CDMA-based relay network using binary countdown scheme
    Takuya Eto; Hiromasa Habuchi; Koichiro Hashiura
    Proceeding of 10th International Conference on Information, Communications and Signal Processing (ICICS2015), Dec. 2015
  • Mitigation of the influence of optical background noise by using Turbo-Coded DOOK　　　　　　　　　　　　　　　
    Sachin Rai; Yusuke Kozawa; Hiromasa Habuchi; Yuto Matsuda
    Journal of Signal Processing, Nov. 2015, [Reviewed]
  • Optical-wireless enhanced code-shift-keying with IM/DD
    Shota Takayanagi; Hiromasa Habuchi; Yusuke Kozawa
    Proceeding of 21st Asia- Pacific Conference on Communications (APCC2015), Oct. 2015, [Reviewed]
  • Indoor optical-wireless code-shift-keying with two-stages demodulation
    Shota Takayanagi; Hiromasa Habuchi; Yusuke Kozawa
    Proceeding of IEEE 4th Global Conference on Consumer Electronics (GCCE2015), Oct. 2015, [Reviewed]
  • Proposal of Turbo-Coded Differential OOK for Optical IM/DD System　　　　　　　　　　　　　　　
    Sachin Rai; Yusuke Kozawa; Hiromasa Habuchi; Yuto Matsuda
    Proceeding of 2015 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2015), Mar. 2015, [Reviewed]
  • Spread Spectrum/Binary Countdown Scheme with GMPSC for Multi-Hop Wireless Network
    Takuya Eto; Hiromasa Habuchi; Koichiro Hashiura
    Proceeding of Eighth International Conference on Mobile Computing and Ubiquitous Networking (ICMU2015), Jan. 2015, [Reviewed]
  • Theoretical Analysis of New PN Code on Optical Wireless Code-Shift-Keying
    Yusuke Takamaru; Sachin Rai; Hiromasa Habuchi
    IEICE Transaction on Fundamentals, Dec. 2014, [Reviewed]
  • Optical Wireless LDGM-BPPM With Unequal Transmission Power Allocation Scheme
    Kyohei Sumikawa; Hiromasa Habuchi
    IEICE Transaction on Fundamentals, Dec. 2014, [Reviewed]
  • Enhancement of Punctured Turbo Code with UTPA in Optical Wireless Channel
    Sachin Rai; Hiromasa Habuchi
    Proceeding of International Symposium on Information Theory and Its Applications (ISITA2014), Oct. 2014, [Reviewed]
  • Influence of Scintillation and Background Noise on LDGM-BPPM with Unequal Transmission Power Allocation Scheme in Optical Wireless Channel　　　　　　　　　　　　　　　
    Kyohei Sumikawa; Hiromasa Habuchi
    Journal of Signal Processing, 01 Jul. 2014, [Reviewed]
  • Influence of Scintillation and Back-ground Noise on the Optical LDGM-BPPM with Unequal Transmission Power Allocation Scheme　　　　　　　　　　　　　　　
    Kyohei Sumikawa; Hiromasa Habuchi
    Proceeding of 2014 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'14), 01 Mar. 2014, [Reviewed]
  • On the Non-coherent Delay Lock Loop for M-ary/Spread-Spectrum System　　　　　　　　　　　　　　　
    Masaya Yamagata; Hiromasa Habuchi
    Proceeding of 2014 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'14), 01 Mar. 2014, [Reviewed]
  • Effective Code Tracking System for M-ary Orthogonal Modulation Scheme
    Masaya Yamagata; Hiromasa Habuchi
    Proceeding of 2013 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2013), 14 Nov. 2013, [Reviewed]
  • Optical N-Parallel Codes-Shift-Keying Using Generalized Modified Prime Sequence Codes and Hadamard Codes
    Yusuke Takamaru; Hiromasa Habuchi
    Proceeding of 2013 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2013), 14 Nov. 2013, [Reviewed]
  • Impact of Interference Cancellation Technique on Throughput of Nonorthogonal CSK/SSMA ALOHA System　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    Journal of Selected Areas in Telecommunications, Nov. 2013, [Reviewed]
  • Optical Wireless LDPC-Coded PPM with Unequal Transmission Power Allocation Scheme
    Kyohei Sumikawa; Hiromasa Habuchi
    Proceeding of 2013 Sixth International Workshop on Signal Design and its Applications in Communications (IWSDA2013), 28 Oct. 2013, [Reviewed]
  • Design of PN Codes for Optical Wireless Code-Shift-Keying with IM/DD
    Yusuke Takamaru; Hiromasa Habuchi
    Proceeding of 2013 Sixth International Workshop on Signal Design and its Applications in Communications (IWSDA2013), 28 Oct. 2013, [Reviewed]
  • On the Modified Pseudo-Ternary M-Sequence Pair
    Masaya Yamagata; Hiromasa Habuchi, IEEE Computer Society
    Proceeding of 2013 Sixth International Workshop on Signal Design and its Applications in Communications (IWSDA2013), 28 Oct. 2013, [Reviewed]
  • 光無線通信におけるPN符号を用いる階層化変調法
    羽渕裕真; 小澤佑介, これまでの光無線変調法は1種類の変調法を利用する場合が一般的であり,階層化変調法に関する検討もほとんど行われていない.本論文では,擬似雑音(PN)符号を用いることにより2種類の情報変調法を融合する光階層化変調方式が提案されている.特に,コードシフトキーイング(CSK)と振幅シフトキーイング(ASK)を融合したCSK-ASK方式,CSKとコード数キーイング(CNK)を融合したCSK-CNK方式,マルチパルス・パルス位置変調(MPPM)とCNKを融合したMPPM-CNK方式が提案されている.これらの方式は,信号パターンによって情報伝送する方式と信号電力によって情報伝送する方式を融合したものであり,各変調方式によって伝送距離や必要な同期精度が異なり,通信距離などに応じて受信情報量が異なる階層化が行える.本論文では,同期タイミングが完全である場合と同期誤差がある場合の誤り率特性が示され,各情報変調データを独立に復調できること,2種類の情報変調法の間で性能差があることが示されている., The Institute of Electronics, Information and Communication Engineers
    電子情報通信学会論文誌B, 01 May 2013, [Reviewed], [Invited]
  • Effectiveness of the network coding with frame slotted ALOHA on VANET　　　　　　　　　　　　　　　
    Hiroyuki Higano; Hiromasa Habuchi; Yusuke Kozawa
    Proceeding of 2013 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing(NCSP'13), Mar. 2013, [Reviewed]
  • Performance Analysis of Multi-pulse PPM for Optical Wireless Hierarchical Transmission System
    Yusuke Kozawa; Hiromasa Habuchi
    Proceedings of IEEE Workshop on Optical Wireless Communications (OWC2012), 03 Dec. 2012, [Reviewed]
  • Priority Code Selection Method of The Modified Binary Countdown Scheme for VANET
    Koichiro Hashiur; Hiromasa Habuchi
    Proceedings of The 12th International Conference on ITS Telecommunications (ITST2012), 08 Nov. 2012, [Reviewed]
  • Analysis of Average Packet Acquisition Time on Wireless Butterfly-typed Network Coding Scheme
    Hiroyuki Higano; Hiromasa Habuchi
    Proceedings of The 12th International Conference on ITS Telecommunications (ITST2012), 07 Nov. 2012, [Reviewed]
  • A Novel Synchronization Scheme for Bi-orthogonal Modulation Using Modified Pseudo-Ternary M-sequence
    Masaya Yamagata; Hiromasa Habuchi
    Proceedings of 2012 International Symposium on Information Theory and its Applications(ISITA), 30 Oct. 2012, [Reviewed]
  • Analysis of hierarchical multi-pulse PPM using modified pseudo orthogonal M-sequence set
    Yusuke Kozawa; Hiromasa Habuchi
    Proceedings of 2012 International Symposium on Information Theory and its Applications(ISITA), 30 Oct. 2012, [Reviewed]
  • On Bit Error Rates of the LDPC-OOK and LDPC-PPM in Optical Wireless Channel　　　　　　　　　　　　　　　
    Kyohei Sumikawa; Hiromasa Habuchi
    Proceedings of The 9th IEEE VTS Asia Pacific Wireless Communications Symposium(APWCS), 23 Aug. 2012, [Reviewed]
  • A Tracking System Using a Differential Detector for M-ary Bi-orthogonal Spread Spectrum Communication Systems
    Junya Kawata; Kouji Ohuchi; and Hiromasa Habuchi
    IEICE Transaction on Fundamentals, 01 Dec. 2011, [Reviewed]
  • Optical Wireless N-CSK with Modified Pseudo Orthogonal M-Sequence Sets
    Yusuke Kozawa; Hiromasa Habuchi
    IEICE Transaction on Fundamentals, 01 Nov. 2011, [Reviewed]
  • Orthogonal Exponential Spline Pulses with Application to Impulse Radio　　　　　　　　　　　　　　　
    Masaru Kamada; Semih Ozlem and Hiromasa Habuchi
    Sampling Theory in Signal and Image Processing, Jul. 2011, [Reviewed]
  • Repeated-permutation MPPM/CDMA with interference avoidance and cancellation
    Tatsuya Muramatsu; Toshiki Kato; Fumie Ono; Hiromasa Habuchi
    2011 the 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11, 2011
  • Multiple Access Performance for Repeated-permutation MPPM with Interference Avoidance
    Tatsuya Muramatsu; Toshiki Kato; Fumie Ono; Hiromasa Habuchi
    2011 20TH INTERNATIONAL CONFERENCE ON COMPUTER COMMUNICATIONS AND NETWORKS (ICCCN), 2011, [Reviewed]
  • Orthogonal exponential spline pulses for impulse radio communications　　　　　　　　　　　　　　　
    Masaru KAMADA; Semih ÖZLEM; Hiromasa HABUCHI
    Proceedings of the 36th Annual Conference of the IEEE Industrial Electronics Society, Glendale, Arizona, 09 Nov. 2010, [Reviewed]
  • Performance of DS/SS system using pseudo-ternary M-sequences
    Ryo Enomoto; Hiromasa Habuchi; Koichiro Hashiura
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Nov. 2010, [Reviewed]
  • A Comparison of Wireless Optical CDMA Systems using Chip-Level Detection
    Yusuke Kozawa; Hiromasa Habuchi
    IEICE Transaction on Fundamentals,, 01 Nov. 2010, [Reviewed]
  • Performance of DS/SS System using Pseudo-Ternary M-Sequences
    Ryo Enomoto; Hiromasa Habuchi; Koichiro Hashiura
    IEICE Transaction on Fundamentals, 01 Nov. 2010, [Reviewed]
  • Frame Synchronization for Multi-Pulse PPM/CSK System
    Fumie Ono; Hiromasa Habuchi
    Journal of Signal Processing, 01 Nov. 2010, [Reviewed]
  • Study on the Code Acquisition and Tracking Systems Using Pseudo-ternary M-sequences
    Ryo Enomoto; Hiromasa Habuchi
    Proceedings of The International Symposium on Information Theory and its Applications and International Symposium on Spread Spectrum Techniques and Applications, 20 Oct. 2010, [Reviewed]
  • Performance Improvement of the Inter-Vehicle Push-Type Packet Compensation Protocol for the Road to Vehicle Broadcasting System
    Koichiro Hashiura; Hiromasa Habuchi
    International Journal of Intelligent Transportation Systems Research, 01 Sep. 2010, [Reviewed]
  • Theoretical Analysis of Optical Wireless CDMA with Modified Pseudo Orthogonal M-sequence Sets
    Yusuke Kozawa; Hiromasa Habuchi
    IEEE Global Communications Conference (IEEE GLOBECOM'09), Dec. 2009, [Reviewed]
  • Performance of the asynchronous push type packet compensation methods for road-to-vehicle broadcasting system
    Koichiro Hashiura; Hiromasa Habuchi
    International Technical Conference of IEEE Region 10 (TENCON2009), Nov. 2009, [Reviewed]
  • Construction of hierarchical optical broadcasting systems for intelligent transport system
    Yusuke Oka; Hiromasa Habuchi
    International Technical Conference of IEEE Region 10 (TENCON2009), Nov. 2009, [Reviewed]
  • Analysis of wireless optical CDMA using chip-level detection
    Yusuke Kozawa; Hiromasa Habuchi
    International Workshop on Signal Design and its Application in Communications (IWSDA 2009), Oct. 2009, [Reviewed]
  • Properties of the pseudo-ternary M-sequences
    Ryo Enomoto; Hiromasa Habuchi
    International Workshop on Signal Design and its Application in Communications (IWSDA 2009), Oct. 2009, [Reviewed]
  • Throughput analysis of the nonorthogonal CSK/SS random access system on communication between users
    Nobuyoshi Komuro; Hiromasa Habuchi
    2009 IEEE International Symposium on Personal Indoor and Mobile Radio Communications (IEEE PIMRC 2009), Sep. 2009, [Reviewed]
  • Repeated Permutation Multi-Pulse PPM for Optical Wireless Communication　　　　　　　　　　　　　　　
    Toshiki Kato; Fumie Ono; Hiromasa Habuchi
    The 24th International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2009), Jul. 2009, [Reviewed]
  • Code Shift Keying/Spread-Spectrum Communication Methods Using Pseudoternary M-Sequences
    HASHIURA Koichiro; HABUCHI Hiromasa, 本論文では,擬3進M系列を用いるコードシフトキーイング型スペクトル拡散通信(Code Shift Keying/Spread-Spectrum : CSK/SS)方式を提案し,同期システムとして遅延ロックループ(Delay Lock Loop : DLL)を用いた場合の同期タイミング追跡誤差(ジッタ)性能及びそのジッタ性能を考慮したビット誤り率特性を理論解析している.本論文で用いる擬3進M系列は,±1からなるM系列とそのM系列を巡回シフトした系列を逆相加算することで得られる.位相差±2チップ間の周期自己相関特性は,マンチェスタ符号化M系列の理想的な特性と同一であり,ジッタ性能の向上が期待できる.解析した結果,擬3進M系列は,従来の1△型DLLの同期ジッタを小さく抑えることができることが示されている.また,ジッタ性能を考慮したビット誤り率(Bit Error Rate : BER)は,BER=10^<-6>を達成する理想的なCSK/SS方式のE_b/N_Oから1.0[dB]以内の劣化に抑えられることが示されている., The Institute of Electronics, Information and Communication Engineers
    The IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Japanese edition) A, May 2009, [Reviewed]
  • Enhancement of Optical Wireless Multi-Pulse PPM
    Yusuke Kozawa; Hiromasa Habuchi
    IEEE Global Communications Conference (IEEE GLOBECOM'08), Dec. 2008, [Reviewed]
  • Increased throughput using optical PPM-CDMA
    Yusuke Kozawa; Hiromasa Habuchi
    International Symposium on Information Theory and Its Applications (ISITA'08), Dec. 2008, [Reviewed]
  • Performance of the slot-distributed push-type packet compensation protocol for the road to vehicle broadcasting system
    Koichiro Hashiura; Hiromasa Habuchi
    International Symposium on Information Theory and Its Applications (ISITA'08), Dec. 2008, [Reviewed]
  • Throughput evaluation of the the nonorthogonal CSK/CDMA ALOHA with interference canceler
    Nobuyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi
    International Symposium on Information Theory and Its Applications (ISITA'08),, Dec. 2008, [Reviewed]
  • Construction of orthogonal overlapping pulses for impulse radio communications
    Masaru Kamada; Semih O"ZLEM; Hiromasa Habuchi, Institute of Electronics, Information and Communication, Engineers, IEICE
    IEICE Transaction on Fundamentals, Dec. 2008, [Reviewed]
  • Nonorthogonal CSK/CDMA with received-power adaptive access control scheme
    Nobusyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi, The measurements for Multiple Access Interference (MAI) problems and the improvement of the data rate are key issues on the advanced wireless networks. In this paper, the nonorthogonal Code Shift Keying Code Division Multiple Access (CSK/CDMA) with received-power adaptive access control scheme is proposed. In our system, a user who is ready to send measures the received power from other users, and then the user decides whether to transmit or refrain from transmission according to the received power and a pre-decided threshold. Not only overcoming the MAI problems, but our system also improve the throughput performance. The throughput performance of the proposed system is evaluated by theoretical analysis. Consequently, the nonorthogonal CSK/CDMA system improves by applying received-power adaptive access control. It was also found that the throughput performance of the nonorthogonal CSK/CDMA system is better than that of the orthogonal CSK/CDMA system at any Eb/N0. We conclude that the nonorthogonal CSK/CDMA system with received-power adaptive access control scheme is expected to be effective in advanced wireless networks., The Institute of Electronics, Information and Communication Engineers
    IEICE Transaction on Fundamentals, Oct. 2008, [Reviewed]
  • Effect of the slot distributed scheme on the push-type packet compensation protocol　　　　　　　　　　　　　　　
    Koichiro Hashiura; Hiromasa Habuchi
    The 23rd International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2008), Jul. 2008, [Reviewed]
  • Effect of the interference canceler on the nonorthogonal CSK/CDMA ALOHA　　　　　　　　　　　　　　　
    Nobusyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi
    The 23rd International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2008), Jul. 2008, [Reviewed]
  • Hierarchical information acquisition scheme on the local broadcasting system
    Yusuke Oka; Hiromasa Habuchi; Kouji Ohuchi
    The 23rd International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2008), Jul. 2008, [Reviewed]
  • Modified pseudo orthogonal M-sequence sets for synchronous optical-CDMA　　　　　　　　　　　　　　　
    Yusuke Kozawa; Hiromasa Habuchi
    The 23rd International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2008),, Jul. 2008, [Reviewed]
  • Theoretical Analysis of Atmospheric Optical DS/SS with On-Off Orthogonal M-sequence Pairs
    Yusuke Kozawa; Hiromasa Habuchi
    Proceeding of Sixth International Conference on Information Communications and Signal Processing, Dec. 2007, [Reviewed]
  • Performance Analysis of Pull-Type Packet Compensation Protocol with Perfect MCS/CDMA for the Broadcasting System
    Koichio Hashiura; Hiromasa Habuchi
    Proceeding of Sixth International Conference on Information Communications and Signal Processing, Dec. 2007, [Reviewed]
  • Throughput Evaluation of the nonorthogonal CSK ALOHA with the Received-Power Adaptive Access Control Scheme
    Nobusyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi
    Proceeding of Sixth International Conference on Information Communications and Signal Processing, Dec. 2007, [Reviewed]
  • Throughput Analysis of the Channel Estimation-Oriented Access Control Scheme on CSK/CDMA
    Nobusyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi
    Proceeding of IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Sep. 2007, [Reviewed]
  • Theoretical Analysis of Atmospheric optical PPM CDMA with Pseudo Orthogonal M-sequences
    Yusuke Kozawa; Hiromasa Habuchi
    Proceeding of IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Sep. 2007, [Reviewed]
  • Theoretical Analysis of Spread-Spectrum Push/Pull Type Packet Compensation Protocol on Local Broadcasting Services
    Koichio Hashiura; Hiromasa Habuchi
    Proceeding of IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Sep. 2007, [Reviewed]
  • Cardinal spline pulses for impulse radio communications　　　　　　　　　　　　　　　
    Masaru KAMADA; Semih ÖZLEM; Hiromasa HABUCHI
    CD-ROM of the International Workshop on Sampling Theory and Application 2007, Thessaloniki(Greece), Jul. 2007, [Reviewed]
  • Influence of Channel Estimation Error on Throughput Performance in the Channel Estimation-Oriented Access Control Scheme with Code Shift Keying
    Nobuyoshi Komuro; Hiromasa Habuchi; Toshinori Tsuboi
    Tenth International Conference on Communication Systems (ICCS 2006), Nov. 2006, [Reviewed]
  • Performance evaluation of the pull-type packet compensation protocol with common spreading sequences for broadcasting system
    Koichiro Hashiura; Hiromasa Habuchi
    Tenth International Conference on Communication Systems (ICCS 2006), Nov. 2006, [Reviewed]
  • Spread Spectrum Modified MPPM System using Quadriphase Sequences
    Fumie Ono; Hiromasa Habuchi; Kouji Ohuchi
    Tenth International Conference on Communication Systems (ICCS 2006), Nov. 2006, [Reviewed]
  • Performance of Enhanced PSM/CSK System using Quariphase E-sequences
    Fumie Ono; Hiromasa Habuchi; Kouji Ohuchi
    2006 IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2006), Sep. 2006, [Reviewed]
  • Analysis of Packet Compensation Protocols with MCS/CDMA for Local Broadcasting Services
    Koichiro Hashiura; Hiromasa Habuchi, IEEE
    2006 IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2006), Sep. 2006, [Reviewed]
  • Embedded Frame Synchronization Method for Pulse Position Modulation System
    Fumie Ono; Hiromasa Habuchi
    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, Jun. 2006, [Reviewed]
  • Effect of Access Control Scheme based on the Estimation of Offered Load on the CSK/SS Random Access Systems
    Nobuyoshi Komuro; Hiromasa Habuchi
    Asia-Pacific Conference on Communications 2005, Oct. 2005, [Reviewed]
  • Design of UWB Pulses in Terms of B-Splines
    Mitsuhiro Matsuo; Masaru Kamada; and Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Sep. 2005, [Reviewed]
  • Novel Code Selecting/Spacing ALOHA System
    Fumie Ono; Hiromasa Habuchi; and Tsuyoshi Arai
    16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Sep. 2005, [Reviewed]
  • Novel Access Control Scheme based on the Estimation of Offered Load for the CSK/SS Random Access Systems
    Nobuyoshi Komuro; Horomasa Habuchi
    2005 International Symposium on Wireless Personal Multimedia Communications, Sep. 2005, [Reviewed]
  • PPM Systems that Embedded Frame Timing Signal　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    2005 International Symposium on Wireless Personal Multimedia Communications, Sep. 2005, [Reviewed]
  • Locally supported cardial splines biorthogonal when shifted by every two knots　　　　　　　　　　　　　　　
    Mitsuhiro Matsuo; Masaru Kamada; Hiromasa Habuchi
    Preprints of the 2005 International Workshop on Sampling Theory and Applications, 10 Jul. 2005
  • Throughput Evaluation of the CSK/SS Packet Radio Communications with Access Control Scheme based on the Estimation of Offered Load　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    2005 International Technical Conference on Circuits/Systems, Computers and Communications, Jul. 2005, [Reviewed]
  • Frame Synchronization for PPM Systems　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    2005 International Technical Conference on Circuits/Systems, Computers and Communications, Jul. 2005, [Reviewed]
  • Proposal of a Simple Synchronization Method foe CSK/SS
    Azumi Ito; Hiromasa Habuchi; Fumie Ono
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Jun. 2005, [Reviewed]
  • A Reasonable Throughput Analysis of the CSK/SSMA unslotted ALOHA system with nonorthogonal sequences
    Nobuyoshi Komuro; Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Jun. 2005, [Reviewed]
  • Design of UWB pulses based on B-splines
    Mitsuhiro Matsuo; Masaru Kamada; Hiromasa Habuchi
    The 2005 IEEE International Symposium on Circuits and Systems, May 2005, [Reviewed]
  • Design of UWB pulses by spline approximation
    Mitsuhiro Matsuo; Masaru Kamada; Hiromasa Habuchi
    2005 IEEE Wireless Communications and Networking Conference, 16 Mar. 2005, [Reviewed]
  • A study of the three-valued CSK spread ALOHA system
    Yusuke Ogose; Tsuyoshi Arai; Hiromasa Habuchi; Hiroshi Inai
    APSITT 2005: 6th Asia-Pacific Symposium on Information and Telecommunication Technologies, Proceedings, 2005, [Reviewed]
  • Design of UWB pulses based on B-splines
    M Matsuo; M Kamada; H Habuchi
    2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS, 2005, [Reviewed]
  • On the Frame Structure of the Spread ALOHA System using Three-Valued Signaling　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    The 2004 International Symposium on Information Theory and its Applications (ISITA 2004), Oct. 2004, [Reviewed]
  • On the Frame Synchronization Method for Pulse Position Modulation System　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    The 2004 International Symposium on Information Theory and its Applications (ISITA 2004), Oct. 2004, [Reviewed]
  • CSK/SSMA ALOHA system with nonorthogonal sequences
    Nobuyoshi Komuro; Hiromasa Habuchi; Masaru Kamada
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Oct. 2004, [Reviewed]
  • Throughput analysis of the CSK/SSMA ALOHA with nonorthogonal sequences by non-perfect capture
    Nobuyoshi Komuro; Hiromasa Habuchi
    IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2004), Sep. 2004, [Reviewed]
  • A simple self-synchronization system for CSK/SS
    Azumi Ito; Hiromasa Habuchi
    IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2004), Sep. 2004, [Reviewed]
  • Proposal of a time-hopping modified multipulse PPM system with restricted amplitude levels
    Fumie Ono; Hiromasa Habuchi
    IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2004), Sep. 2004, [Reviewed]
  • Effect of channel load sensing protocol on the nonorthogonal ALOHA system
    Nobuyoshi Komuro; Hiromasa Habuchi
    The 2004 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC2004), Jul. 2004, [Reviewed]
  • Jitter Performance of Simple Synchronization Method using Manchester-code for CSK/SS
    Azumi Ito; Hiromasa Habuchi
    The 2004 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2004), Jul. 2004, [Reviewed]
  • A Study on the Repeated Permutation MPPM/SS System　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    The 2004 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC2004), Jul. 2004, [Reviewed]
  • New pulse spacing modulation based on spread-spectrum communication scheme
    Fimie Ono; Hiromasa Habuchi
    IEE Proceedings Communications, Apr. 2004, [Reviewed]
  • M系列を用いたCSK ALOHA方式の性能解析
    Tsuyoshi Arai; Hiromasa Habuchi; Fumie Ono, 本論文では,M系列の周期自己相関のサイドローブが負になることに着目し,内部系列としてM系列を用いて構成される2重拡数系列を利用したCSK ALOHA方式のスループット特性が理論解析により示されている.また,直交系列を用いるCSK ALOHA方式やDS ALOHA方式との性能の比較が行われており,本方式の有効性が検討されている.その結果,外部系列に直交系列,内部系列にM系列を用いる2重拡数系列はCSK ALOHA方式に適していることが明らかにされている.また,2重拡数系列を用いたCSK ALOHA方式は従来の直交系列を用いるCSK ALOHA方式やDS ALOHA方式よりも優れたスループット特性を示すことが明らかにされている.更に,本方或は符号系列数を固定しても2重拡散系列の構成を変更することで符号系列長を変化させることが可能であることから,本方式を適用する通信路環境に応じて最良のスループットを達成する2重拡数系列を設定できる., The Institute of Electronics, Information and Communication Engineers
    電子情報通信学会論文誌, Dec. 2003, [Reviewed]
  • A Comparison of the Spread Spectrum Modified Multipulse PPM System and the Spread Spectrum PPM System in a Multi-User Case　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2003), Dec. 2003, [Reviewed]
  • Performance Analysis of CSK/SS with Manchester-coded PN Sequence Pair
    Azumi Ito; Hiromasa Habuchi
    IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2003), Dec. 2003, [Reviewed]
  • Effect of Interference Cancellar on CSK/SS Systems Using Decision Feedback DLLs
    Batzorig Baasandash; Hiromasa Habuchi; Kouji Ohuchi; Hitoshi Suzuki
    IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2003), Dec. 2003, [Reviewed]
  • Performance Analysis of Push-Type Packet Compensation Protocol Using MCS/CDMA
    Masashi Sato; Hiromasa Habuchi
    IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2003), Dec. 2003, [Reviewed]
  • Throughput of the Unslotted CSK/SS ALOHA System with Nonorthogonal Sequences　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2003), Dec. 2003, [Reviewed]
  • A New Modulation Technique Based on Pulse Position Modulation and Code Shift Keying
    Fumie Ono; Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Oct. 2003, [Reviewed]
  • Throughput of the CSK/SS ALOHA System with Nonorthogonal Sequences　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC'03), Oct. 2003, [Reviewed]
  • Packet Compensation Protocol with MCS/CDMA
    Masashi Sato; Hiromasa Habuchi
    The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC'03), Oct. 2003, [Reviewed]
  • CDMA Performance of the Spread Spectrum Modified Multipulse PPM System
    Fumie Ono; Hiromasa Habuchi
    The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC'03), Oct. 2003, [Reviewed]
  • A Novel Synchronization Method for CSK/SS
    Azumi Ito; Hiromasa Habuchi
    The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC'03), Oct. 2003, [Reviewed]
  • A New Spread ALOHA System using Three-Valued Signaling　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC'03), Oct. 2003, [Reviewed]
  • M-ary/SSMA slotted ALOHA with traffic control scheme on erroneous feedback channels
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE Global Telecommunications Conference (GLOBECOM'02), Nov. 2002, [Reviewed]
  • Throughput analysis of nonorthogonal multilevel spread ALOHA systems
    Nobuyoshi Komuro; Hiromasa Habuchi; Masaru Kamada
    IEEE Global Telecommunications Conference (GLOBECOM'02), Nov. 2002, [Reviewed]
  • Performance of the time hopping modified PSM system on the AWGN channel
    Fumie Ono; Hiromasa Habuchi
    IEEE Global Telecommunications Conference (GLOBECOM'02), Nov. 2002, [Reviewed]
  • Proposal of a time-hopping pulse spacing modulation system with restricted amplitude levels
    Fumie Ono; Hiromasa Habuchi
    International Symposium on Wireless Personal Multimedia Communications (WPMC2002, Oct. 2002, [Reviewed]
  • Initial acquisition performance of Bi-orthogonal modulation systems using differential detector
    Kouji Ohuchi; Kouichi Matsuno; Hiromasa Habuchi
    IEEE International Symposium on Spread Spectrum Techniques & Applications (ISSSTA 2002), Sep. 2002, [Reviewed]
  • M-ary/SSMA slotted ALOHA with traffic control scheme on erroneous feedback channels
    T Arai; H Habuchi
    5TH INTERNATIONAL SYMPOSIUM ON WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS, VOLS 1-3, PROCEEDINGS, 2002, [Reviewed]
  • Bi-orthogonal modulation systems using two different inner sequences
    Ohuchi Kouji; Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Dec. 2001, [Reviewed]
  • The delay property of the M-ary/SSMA ALOHA systems with the traffic control protocol　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    International Conference on Information Communications and Signal Processing(ICICS'01), Oct. 2001, [Reviewed]
  • Theoretical analysis of the unslotted SS-CSC/CDMA ALOHA system　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    International Conference on Information Communications and Signal Processing (ICICS'01), Oct. 2001, [Reviewed]
  • Performance evaluation of the spread-spectrum modified MPPM system using E-sequences and a preamble
    Fumie Ono; Hiromasa Habuchi
    International Conference on Information Communications and Signal Processing, (ICICS'01), Oct. 2001, [Reviewed]
  • Theoretical Analysis of the Spread Spectrum PSM System using E-sequences and a Preamble
    Fumie Ono; Hiromasa Habuchi
    IEEE International Conference on Communications (ICC 2001), Jun. 2001, [Reviewed]
  • A Synchronization System with DLL and the Differential Detector for Bi-orthogonal Modulation Systems
    Hiromasa Habuchi; Yasuo Usui
    International Symposium of Information Theory and Its Applications, Nov. 2000, [Reviewed]
  • A Spread Spectrum PSM System using a Preamble　　　　　　　　　　　　　　　
    Fumie Ono; Hiromasa Habuchi
    International Symposium of Information Theory and Its Applications, Nov. 2000, [Reviewed]
  • A Study on Performance of M-ary/SSMA ALOHA Ssytems with ARQ Protocol
    Hiromasa Habuchi; Tatsuya Matsumoto
    International Symposium of Information Theory and Its Applications, Nov. 2000, [Reviewed]
  • Throughput Analysis of Packet Radio Network using the SS-CSC/SSMA Scheme　　　　　　　　　　　　　　　
    Nobuyoshi Komuro; Hiromasa Habuchi
    International Symposium of Information Theory and Its Applications, Nov. 2000, [Reviewed]
  • Performance Analysis of Spread ALOHA Systems with ARQ Protocol　　　　　　　　　　　　　　　
    Hiromasa Habuchi; Tatsuya Matsumoto; Tsuyoshi Arai
    IEEE 7th Singapore International Conference on Communication Systems, Nov. 2000, [Reviewed]
  • Analysis of the Bi-orthogonal Modulation System using Two Different Inner Sequences
    Kouji Ohuchi; Hiromasa Habuchi
    IEEE 6th International Symposium on Spread Spectrum Techniques and Applications, Sep. 2000, [Reviewed]
  • Performance Evaluation of the M-ary/SSMA ALOHA System with CLSP
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE 6th International Symposium on Spread Spectrum Techniques and Applications, Sep. 2000, [Reviewed]
  • Performance Analysis of the SS-PSM System using E-sequences and a Preamble
    Fumie Ono; Hiromasa Habuchi
    IEEE 11th International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2000, [Reviewed]
  • Proposal of a Spread ALOHA System using the SS-CSC Technique
    Nobuyoshi Komuro; Hiromasa Habuchi
    IEEE 11th International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2000, [Reviewed]
  • A Comparison of the M-ary/SSMA ALOHA System and the DS/SSMA ALOHA System
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE 11th International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2000, [Reviewed]
  • A Comparison of the M-ary/SSMA ALOHA System and the DS/SSMA ALOHA System under the Frequency Selective Fading Channel　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE 7th Singapore International Conference on Communication Systems, Sep. 2000, [Reviewed]
  • A Novel Synchronization Method for Bi-orthogonal Modulation Systems
    Hiromasa Habuchi; Yasuo Usui
    IEEE 11th International Symposium on Personal, Indoor and Mobile Radio Communications, 2000, [Reviewed]
  • A Study on Spectral Efficiency of Code Shift Keying using Two Different Inner Sequences　　　　　　　　　　　　　　　
    Kouji Ohuchi; Hiromasa Habuchi
    International Symposium of Information Theory and Its Applications, 2000, [Reviewed]
  • Performance Evaluation of Spread-Spectrum Pulse Spacing Modulation Systems with Preamble
    Fumie Ono; Hiromasa Habuchi
    International Conference on Information, Communications and Signal Processing, Dec. 1999, [Reviewed]
  • Performance Evaluation of the M-ary/SSMA Unslotted ALOHA System　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    International Technical Conference on Circuits/Systems, Computers and Communications, 1999, [Reviewed]
  • Performance Improvement of SS-PPM Systems
    Hiromasa Habuchi
    International Technical Conference on Circuits/Systems, Computers and Communications, 1999, [Reviewed]
  • Frame Synchronization Method with the Differential Detector for CSK Utilizing the M-sequence Property　　　　　　　　　　　　　　　
    Kouji Ohuchi; Hiromasa Habuchi; Hidekazu Fujiwara
    International Technical Conference on Circuits/Systems, Computers and Communications, 1999, [Reviewed]
  • Spectral Efficiency of the Orthogonal Multicarrier M-ary/SS System over Frequency Selective Fading Channel　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    International Technical Conference on Circuits/Systems, Computers and Communications, 1999, [Reviewed]
  • Performance in the SSMA Unslotted ALOHA System with the M-ary/SS Technique　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    International Conference on Information, Communications and Signal Processing, 1999, [Reviewed]
  • A Theoretical Analysis of the Synchronous SS-CSC/CDMA System
    Kouji Ohuchi; Hiromasa Habuchi; Toshio Takebayashi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Nov. 1998, [Reviewed]
  • Performance Comparison of M-ary/SSMA Systems and DS/SSMA Systems in the Presence of Frequency Selective Fading and Partial-Band Interference
    Tuyoshi Arai; Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communication Engineers, Nov. 1998, [Reviewed]
  • A Proposal of Spread-Spectrum Pulse Spacing Modulation System using Even-Shift Orthogonal Sequences
    Hiromasa Habuchi; Michihiro Nomura
    IEEE Interantional Workshop on Intelligent Signal Processing and Communication System(ISPACS'98), Nov. 1998, [Reviewed]
  • Effects of CCI Cancellation Techniques on the Synchronous SS-CSC/CDMA System　　　　　　　　　　　　　　　
    Kouji Ohuchi; Hiromasa Habuchi; Toshio Takebayashi
    IEEE International Workshop on Intelligent Processing and Communication System (ISPACS'98), Nov. 1998, [Reviewed]
  • Spectral Effeciency of the Multicarrier M-ary/SSMA Systems　　　　　　　　　　　　　　　
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE International Workshop on Intelligent Signal Processing and Communication Systems(ISPACS'98), Nov. 1998, [Reviewed]
  • Performance Evaluation of Spread-Spectrum Multipulse PPM Systems
    Hiromasa Habuchi; Mariki Masubuchi
    IEEE International Workshop on Intelligent Signal Processing and Communication Systems(ISPACS'98), Nov. 1998, [Reviewed]
  • Performance Analysis of Orthogonal Multicarrier M-ary/SSMA Systems
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE Global Telecommunication Conference(GLOBECOM'98), Nov. 1998, [Reviewed]
  • Throughput Performance of M-ary/SSMA Slotted ALOHA Systems
    Tsuyoshi Arai; Hiromasa Habuchi
    IEEE Global Telecommunications Conference(GLOBECOM'98), Nov. 1998, [Reviewed]
  • A Self-Synchronization Method for the SS-CSC System
    Hiromasa Habuchi; Toshio Takebayashi; Takaaki Hasegawa
    The Transactions of the Institute of Electronics, Information and Communications Engineers, 1997, [Reviewed]
  • An Analysis of Frame Synchronization Systems with Racing Counters and Majority Rule for M-ary/SS Communication Systems
    Kouji Ohuchi; Hiromasa Habuchi
    The Transactions of the Institute of Electronics, Information and Communications Engineers, 1997, [Reviewed]
  • SSMA Performance of Multicarrier M-ary/SS Systems over Frequency Selective Fading Channel　　　　　　　　　　　　　　　
    Hiromasa Habuchi; Tsuyoshi Arai
    International Technical Conference on Circuits/Systems, Computers and Communications, 1997, [Reviewed]
  • Proposal of an M-ary/SSMA Unslotted ALOHA System with Channel Load Sensing Protocol
    Hiromasa Habuchi; Masahiro Shibuta
    International Technical Conference on Circuits/Systems, Computers and Communications, 1997, [Reviewed]
  • A Synchronization System with Differential Detector for the SS-CSC System
    Hiromasa Habuchi; Toshio Takebayashi; Takaaki Hasegawa
    The 8th International Symposium on Personal, Indoor and Mobile Radio Communications, 1997, [Reviewed]
  • Synchronous CDMA Performance of Bi-orthogonal Systems with Synchroninzing PN Sequence
    Hiromasa Habuchi; Takahiro Hasegawa
    1st International Conference on Information Communications and Signal Processing, 1997, [Reviewed]
  • Theoretical Analysis M-ary/SSMA Systems Multicarrier Techniques
    Tsuyoshi Arai; Hiroamsa Habuchi
    1st International Conference on Information Communications and Signal Processing, 1997, [Reviewed]
  • Performance of the DPPM/CDM System using a Cascaded Cancellation Scheme
    Hiromasa Habuchi; Mariko Masubuchi
    1st International Conference on Information Communications and Signal Processing, 1997, [Reviewed]
  • Bit error rate of bi-orthogonal systems considering synchronization performance　　　　　　　　　　　　　　　
    Hiromasa Habuchi; Shun Hosaka, Institute of Electronics, Information and Communication, Engineers, IEICE
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 1996
  • Theoretical Analysis of M-ary/SS Communication Systems using Racing Counters and a Hadamard Matrix
    Kouji Ohuchi; Hiromasa Habuchi; Takaaki Hasegawa
    IEEE Journal on Selected Areas in Communications, 1996, [Reviewed]
  • Bit Error Rate of Bi-orthogonal Systems Considering Synchronization Performance
    Hiromasa Habuchi; Shun Hosaka
    The Transactions of the Institute of Electronics, Information and Communications Engineers, 1996, [Reviewed]
  • Synchronization Methods using Several Synchronizing Chips for M-ary/SS Communication Systems
    Kouji Ohuchi; Hiromasa Habuchi
    Teh Transactions of the Institute of Electronics, Information and Communications Engineers, 1996, [Reviewed]
  • Analysis of BER Performance of the Spread Spectrum Communication System with Constrained Spreading Code
    Hiromasa Habuchi; Toshio Takebayashi; Takaaki Hasegawa
    The Transactions of the Institute of Electronics, Information and Communications Engineers, 1996, [Reviewed]
  • Initial Acquistion Time of M-ary/SS Communication System with Several Synchronizing Chips
    Kouji Ohuchi; Hiromasa Habuchi
    IEEE International Symposium on Spread Spectrum Techniques and Applications, 1996, [Reviewed]
  • Performance Analysis of the SS-CSC System using Synchronizing Spreading Code
    Toshio Takebayashi; Hiromasa Habuchi; Takaaki Hasegawa
    IEEE International Symposium on Spread Spectrum Techniques and Applications, 1996, [Reviewed]
  • A Study on Multiplexing of Digital Pulse Position Modulation System with SS Signaling(共著)
    Mariko Masubuchi; Hiromasa Habuchi; Makoto Hashimoto
    IEEE International Conference on Communication Systems and IEEE International Workshop on Intelligent Signal Processing and Communication Systems, 1996, [Reviewed]
  • The Synchronization Performance of the SS-CSC system using Synchronizing preading Code
    Toshio Takebayashi; Hiromasa Habuchi
    IEEE International Conference on Communication Systems and IEEE International Workshop on Intelligent Signal Processing and Communication Systems, 1996, [Reviewed]
  • Bit Error Rate Performance of Bi-orthogonal System with Synchronizing Signal　　　　　　　　　　　　　　　
    Shun Hosaka; Hiromasa Habuchi
    IEEE International Conference on Communication Systems and IEEE International Workshop on Interlligent Signal Processing and Communication Systems, 1996, [Reviewed]
  • Bi-orthogonal System using Synchronizing Sequence and Co-channel Interference Canceler
    Hiromasa Habuchi; Shuichi Akiyama
    1995 Joint Technical Conference on Circuits/Systems, Computer and Communications, JTC-CSCC'95, 1995, [Reviewed]
  • Performance Evaluation of the SS-CSC System　　　　　　　　　　　　　　　
    Hiromasa Habuchi; Takaaki Hasegawa
    1995 International Symposium on Communications, ISCOM'95, 1995, [Reviewed]
  • Bit Error Rate Performance of M-ary/SS Communication Systems using Racing Counter　　　　　　　　　　　　　　　
    Kouji Ohuchi; Hiromasa Habuchi; Takaaki Hasegawa
    1995 International Symposium on Communications, ISCOM'95, 1995, [Reviewed]
  • Proposal of Spread Spectrum Communication Constrained Spreading Code
    羽渕裕真; 長谷川孝明, Copyright notice. c1994 IEICE All rights reserved. 「拡散符号を拘束したスペクトル拡散通信方式の提案」 羽渕裕真, 長谷川孝明著, 電子情報通信学会論文誌 B, 1994 Vol.J77-B1 No.12 pp. 749-751 許諾No.07RB0055.本論文では,複数の拡散符号から選択した符号を一定区間利用するスペクトル拡散通信方式を提案している.本方式は従来のM-aryスペクトル拡散通信方式と同様に誤り率特性を改善することができ,更に従来方式に比べ装置を簡易にできる., The Institute of Electronics, Information and Communication Engineers
    The transactions of The Institute of Electronics, Information and Communication Engineers., 1994, [Reviewed]
  • A Study on the M-ary/SS Communication System using a Frame Synchronization Method of PCM Communication Systems
    Kouji Ohuchi; Hiromasa Habuchi; Takaaki Hasegawa
    The transactions of The Institute of Electronics, Information and Communication Engineers, 1994, [Reviewed]
  • On the SS-CSC System with a Synchronizing Spreading Code
    Hiromasa Habuchi; Takaaki Hasegawa
    IEEE International Symposium on Spread Spectrum Techniques & Aaalications, 1994, [Reviewed]
  • M-ary/SS Communication System using a Frame Synchronization Method of PCM Systems　　　　　　　　　　　　　　　
    Kouji Ohuchi; Hiromasa Habuchi; Takaaki Hasegawa
    International Symposium on Information Theory and Its Applications, 1994, [Reviewed]
  • Influence of Phase Difference between the Groups on BER Performance in the 2M-plex System
    Hiromasa Habuchi; Takaaki Hasegawa
    The Transactions of The Institute of Electronics, Information and Communication Engineers, Jul. 1993, [Reviewed]
  • An Auto-Correlation Side-Lobe Suppression Method of Independence from Chip-Waveform on Modified M-Sequence and Its Application
    羽渕裕真; 長谷川孝明; 鈴木康夫, Copyright notice. c1991 IEICE All rights reserved. 「チップ波形によらない変形M系列の自己相関関数のサイドロープ抑圧法とその応用」羽渕裕真,長谷川孝明,鈴木康夫著, 電子情報通信学会論文誌 A ,1991 Vol.J74-A No.12 pp. 1808-1809 許諾No.07RB0055.変形M系列の自己相関関数のサイドローブをチップ波形によらずOにする方法を示し，それによって得られた系列を符号分割多重化法の一つであるa-chipシフト多重化法に適用し,その性能評価を行っている., 電子情報通信学会
    The Transactions of The Institute of Electronics, Information and Communication Engineers, Dec. 1991, [Reviewed]
  • A Code Division Multiplex using Manchester Coded Orthogonal Sequences
    Hiromasa Habuchi; Takaaki Hasegawa; Yukio Hakura; Misao Haneishi
    The Transactions of The Institute of Electronics, Information and Communication Engineers, May 1991, [Reviewed]
  • A Code Division Multiplex using Pseudo Orthogonal Manchester Coded M-Sequence Pairs
    羽渕裕真; 長谷川孝明; 羽倉幸雄; 羽石操, Copyright notice. c1990 IEICE All rights reserved. 「擬直交マンチェスタ符号化Ｍ系列対による符号分割多重化法」羽渕裕真,長谷川孝明,羽倉幸雄,羽石操著, 電子情報通信学会論文誌 B ,1990 Vol.J73-B1No.4 pp. 371-377 許諾No.07RB0055.あらましスペクトル拡散通信は符号分割多重による多元接続が可能な方式として注目されているが,拡散符号間に相互相関が存在するため,同時通信を行う各チャネル間にチャネル間干渉が存在し,チャネル数が多い場合にはこのチャネル間干渉は無視できないものとなる.この問題の解決法として擬直交M系列対の利用が提案されている.この系列対は拡散符号と逆拡散符号が異なり,相互相関のサイドローブが0であることによりチャネル間干渉を0にしている.本論文では擬直交M系列対をマンチェスタ符号化した擬直交マンチェスタ符号化M系列対を用いた同期式スペクトル拡散多重通信方式を提案する.本方式は擬直交マンチェスタ符号化M系列対を1chipずつシフトしたM種類の系列を各チャネルの拡散符号に割り当て,このMチャネルを一つの系列群とし,その系列群の初期位相を異ならせながら数を増やすためチャネル間干渉を低く抑えることができ,チャネル数をM×2,Mx3にすることができる.また,系列群数を1とした場合は,チャネル間干渉なしでMチャネルの多重伝送が可能である.更に受信側にキャンセラを用いることにより本システムの性能を向上させることができる., 電子情報通信学会
    The Transactions of The Institute of Electronics, Information and Communication Engineers, Apr. 1990, [Reviewed]
  • A Synchronous Code Division Multiplex using Raised-Cosine Orthogonal Sequences　　　　　　　　　　　　　　　
    Hiromasa Habuchi; Takaaki Hasegawa; Yukio Hakura; Misao Haneishi
    International Symposium on Information Theory and Its Applications, 1990, [Reviewed]
  • A Novel Synchronous Code Division Multiplex using Orthogonal Manchester Coded M-Sequences
    Hiromasa Habuchi; Takaaki Hasegawa; Yukio Hkura; Misao Haneishi
    International Conference on Communication Systems, 1990, [Reviewed]
  • A Novel Multiplex for Optical PPM Channel
    HABUCHI Hiromasa, Copyright notice. c1988 IEICE All rights reserved. 「光通信ＰＰＭの新しい多重化法」羽渕裕真,長谷川孝明,羽倉幸雄,羽石操著, 電子情報通信学会論文誌 B, 1988 Vol. J71-B No.1 pp. 92-93 許諾No.07RB0055.光通信PPM(Pulse Position Modula-tion)の新しい多重化法を提案し,特に,2重化法について述べ,ショット雑音が支配的な場合の誤り率の計算を行う., 電子情報通信学会
    The Transactions of The Institute of Electronics, Information and Communication Engineers, 1988
  • A Novel Multiplex Operation for Optical PPM Channels
    Hiromasa Habuchi; Takaaki Hasegawa; Yukio Hakura; Misao Haneishi, Copyright notice. c1988 IEICE All rights reserved. 「光通信ＰＰＭの新しい多重化法」羽渕裕真,長谷川孝明,羽倉幸雄,羽石操著, 電子情報通信学会論文誌 B, 1988 Vol. J71-B No.1 pp. 92-93 許諾No.07RB0055.光通信PPM(Pulse Position Modula-tion)の新しい多重化法を提案し,特に,2重化法について述べ,ショット雑音が支配的な場合の誤り率の計算を行う., 電子情報通信学会
    International Conference on Communication Systems, 1988, [Reviewed]
  • A Novel Amplitude Division Multiplex for Digital Pulse Position Modulation
    長谷川孝明; 羽渕裕真; 羽倉幸雄; 羽石操, Copyright notice. c1987 IEICE All rights reserved. 「振幅分割によるディジタルパルス位置変調の新しい多重化法」長谷川孝明, 羽渕裕真,羽倉幸雄,羽石操著, 電子情報通信学会論文誌 B, 1990. Vol. J73-B No.4 pp. 371-377 許諾No.07RB0055.DPPM(Digital Pulse-Position Modula・tion)の新しい多重化法を提案した., 電子情報通信学会
    The Transactions of The Institute of Electronics, Information and Communication Engineers, Oct. 1987, [Reviewed]

MISC

Books and other publications

  • デジタルネイティブのための情報リテラシー　　　　　　　　　　　　　　　
    大瀧保広; 山本一幸; 羽渕裕真, Joint work
    学術図書出版, 01 Mar. 2024
    9784780612288
  • データ駆動時代の情報リテラシー　　　　　　　　　　　　　　　
    大瀧保広; 山本一幸; 羽渕裕真, Joint work
    学術図書出版, 30 Mar. 2020
    9784780608069
  • アカデミック情報リテラシー　　　　　　　　　　　　　　　
    宇野美由紀; 大瀧保広; 野口宏; 羽渕裕真, Joint work
    学術図書出版, 20 Mar. 2015
    9784780604290

Lectures, oral presentations, etc.

  • 送信電力制御を用いた空間デジタル制御型CSKの通信路容量　　　　　　　　　　　　　　　
    清川龍志; 羽渕裕真; 小澤佑介
    電子情報通信学会技術研究報告WBS2024-98(IT2024-101,ISEC2024-115,RCC2024-103), 06 Mar. 2025
    20250305, 20250306
  • 3モード型オンデマンドWSNにおけるチャネル間干渉の影響　　　　　　　　　　　　　　　
    李根; 末武正範; 羽渕裕真
    複雑コミュニケーションサイエンス研究会, 27 Mar. 2022, 電子情報通信学会
    20220327, 20220327
  • 時間分割型USLIPTにおける最適CSK信号点空間拡張に関する検討　　　　　　　　　　　　　　　
    向後拓磨; 小澤佑介; 羽渕裕真
    ワイドバンドシステム研究会, 11 Mar. 2022, 電子情報通信学会
    20220311, 20220311
  • VN-CSK型RGB並列伝送における光フィンガープリント法　　　　　　　　　　　　　　　
    垂石興起; 小川大輔; 小澤佑介; 羽渕裕真
    ワイドバンドシステム研究会, 11 Mar. 2022, 電子情報通信学会
    20220311, 20220311
  • 擬直交M系列対による2乗検波型M-ary変調方式の特性　　　　　　　　　　　　　　　
    梁勲; 李根; 羽渕裕真
    ワイドバンドシステム研究会, 11 Mar. 2022, 電子情報通信学会
    20220311, 20220311
  • 水中可視光通信のための角度ダイバーシティ受信機を用いた背景光雑音軽減法に関する検討　　　　　　　　　　　　　　　
    松永彗吾; 小澤佑介; 羽渕裕真
    ワイドバンドシステム研究会, 11 Mar. 2022, 電子情報通信学会
    20220311, 20220311
  • xASK-CodeSK可視光ワイヤレス給電システム　　　　　　　　　　　　　　　
    市塚優; 羽渕裕真
    東京支部学生会研究発表会, 05 Mar. 2022, 電子情報通信学会東京支部学生会
    20220305, 20220305
  • 変形擬直交M系列と白色光パターンを用いるCode-ColorSK送受信法　　　　　　　　　　　　　　　
    石田涼; 羽渕裕真
    東京支部学生会研究発表会, 05 Mar. 2022, 電子情報通信学会東京支部学生会
    20220305, 20220305
  • 干渉領域でデータ復調可能な視覚復号型照明光通信　　　　　　　　　　　　　　　
    山田佑磨; 羽渕裕真
    東京支部学生会研究発表会, 05 Mar. 2022, 電子情報通信学会東京支部学生会
    20220305, 20220305
  • 屋内照明光通信を用いる反射光を考慮した光フィンガープリント法の性能評価　　　　　　　　　　　　　　　
    落合勇太; 小川大輔; 羽渕裕真
    東京支部学生会研究発表会, 05 Mar. 2022, 電子情報通信学会東京支部学生会
    20220305, 20220305
  • VN-CodeSK方式による知的照明光通信　　　　　　　　　　　　　　　
    羽渕裕真; 小澤佑介
    革新的無線通信技術に関する横断型研究会, 29 Oct. 2021, 電子情報通信学会, [Invited]
    20211029, 20211029
  • 二重拡散符号を用いる光無線CSKのための符号同期システムの提案　　　　　　　　　　　　　　　
    栗山遼太; 羽渕裕真
    ソサイエティ大会, 14 Sep. 2021, 電子情報通信学会
    20210914, 20210914
  • 擬直交Ｍ系列対による２乗検波型Ｍ-ary 変調方式　　　　　　　　　　　　　　　
    梁勲; 羽渕裕真
    ソサイエティ大会, 14 Sep. 2021, 電子情報通信学会
    20210914, 20210914
  • 視覚復号型(n,n)秘密分散法によるRGB並列伝送システム　　　　　　　　　　　　　　　
    幡豆亮平; 真中佳祐; 羽渕裕真
    ワイドバンドシステム研究会, 20 May 2021, 電子情報通信学会
    20210520, 20210520
  • VN-CSK照明光通信における光フィンガープリント法の性能向上法　　　　　　　　　　　　　　　
    小川大輔; 垂石興起; 羽渕裕真
    ワイドバンドシステム研究会, 20 May 2021, 電子情報通信学会
    20210520, 20210520
  • 3モード型オンデマンドWSNにおけるパケット成功率性能　　　　　　　　　　　　　　　
    末武正範; 梁勲; 羽渕裕真
    ワイドバンドシステム研究会, 20 May 2021, 電子情報通信学会
    20210520, 20210520
  • RGB-LED並列伝送におけるBPPMフレーム同期法　　　　　　　　　　　　　　　
    松島丈; 木口朋洋; 羽渕裕真
    ワイドバンドシステム研究会, 20 May 2021, 電子情報通信学会
    20210520, 20210520
  • VN-CSK型RGB並列伝送における誤り率性能の位置依存性　　　　　　　　　　　　　　　
    垂石興起; 小澤佑介; 羽渕裕真
    ワイドバンドシステム研究会, 20 May 2021, 電子情報通信学会
    20210520, 20210520
  • 屋内照明光通信における光フィンガープリント法による位置推定法　　　　　　　　　　　　　　　
    小川大輔; 垂石興起; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 06 Mar. 2021, 電子情報通信学会東京支部学生会
    20210306, 20210306
  • MPOMSを用いる3モード動作型オンデマンドWSN　　　　　　　　　　　　　　　
    末武正範; 梁勲; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 06 Mar. 2021, 電子情報通信学会東京支部学生会
    20210306, 20210306
  • RGB並列伝送型照明光通信における視覚復号型秘密分散法の適用　　　　　　　　　　　　　　　
    幡豆亮平; 真中佳祐; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 06 Mar. 2021, 電子情報通信学会東京支部学生会
    20210306, 20210306
  • RGB並列伝送におけるBPPMシステムのためのフレーム同期法　　　　　　　　　　　　　　　
    松島丈; 木口朋洋; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 06 Mar. 2021, 電子情報通信学会東京支部学生会
    20210306, 20210306
  • 色間電力の異なるRGB-LED照明を用いるVN-CSK型並列屋内照明光通信の性能評価　　　　　　　　　　　　　　　
    垂石興起; 羽渕裕真; 小澤佑介
    電子情報通信学会ワイドバンドシステム研究会, 05 Mar. 2021, 電子情報通信学会ワイドバンドシステム研究会
    20210305, 20210305
  • 光無線ターボ符号通信システムのための高速伝送方式　　　　　　　　　　　　　　　
    孫冉,羽渕裕真,小澤佑介
    電子情報通信学会ワイドバンドシステム研究会, 15 Dec. 2020, 電子情報通信学会ワイドバンドシステム研究会
    20201215, 20201215
  • 屋内照明光通信のためのVN-CSK型RGB並列伝送　　　　　　　　　　　　　　　
    垂石興起; 小澤佑介,羽渕裕真
    電子情報通信学会ワイドバンドシステム研究会, 14 Dec. 2020, 電子情報通信学会ワイドバンドシステム研究会
    20201214, 20201214
  • 時間分割型水中可視光ワイヤレス給電通信システムのためのCSK信号点配置の検討　　　　　　　　　　　　　　　
    向後拓磨,小澤佑介,羽渕裕真
    電子情報通信学会ワイドバンドシステム研究会, 14 Dec. 2020, 電子情報通信学会ワイドバンドシステム研究会
    20201214, 20201214
  • 自己同期法を用いる光無線ターボ符号システムの 誤り率性能　　　　　　　　　　　　　　　
    木口朋洋,小澤佑介,羽渕裕真,孫冉
    電子情報通信学会ワイドバンドシステム研究会, 14 Dec. 2020, 電子情報通信学会ワイドバンドシステム研究会
    20201214, 20201214
  • 視覚復号法を用いる照明光通信システムについて　　　　　　　　　　　　　　　
    羽渕裕真; 小澤佑介; 真中佳祐
    電子情報通信学会無線通信研究会, 25 Nov. 2020, 電子情報通信学会無線通信研究会, [Invited]
    20201125, 20201125
  • VN-CSK照明可視光通信におけるMPOMSを利用する等重み(4,4)視覚復号型秘密分散法　　　　　　　　　　　　　　　
    真中佳祐; Liyuan Chen; 羽渕裕真; 小澤佑介
    電子情報通信学会ソサイエティ大会, 15 Sep. 2020, 電子情報通信学会
    20200915, 20200915
  • 二種類の疑似雑音符号を用いるRGB並列可視光通信の性能評価　　　　　　　　　　　　　　　
    垂石興起; 羽渕裕真
    電子情報通信学会ソサイエティ大会, 15 Sep. 2020, 電子情報通信学会
    20200915, 20200915
  • 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　　　　　　　　　　　　　　　
    小沢佑介; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 03 Mar. 2007, 電子情報通信学会東京支部学生会
  • MCS/SSを用いたPull型パケット補間法のブロッキング確率　　　　　　　　　　　　　　　
    橋浦康一郎; 羽渕裕真
    電子情報通信学会東京支部学生会研究発表会, 04 Mar. 2006

Affiliated academic society

  • Mar. 2014 - Present, 信号処理学会
  • Jan. 1994 - Present, The Institute of Electrical and Electronics Engineers, Inc.
  • Jul. 1986 - Present, The Institute of Electronics, Information and Communication Engineers
  • Apr. 1998 - May 2011, 情報理論とその応用学会

Research Themes

Social Contribution Activities

  • 県立友部高等学校の学科改編に伴う協力についての協力　　　　　　　　　　　　　　
    advisor
    茨城県教育庁学校教育部, 03 Mar. 2021 - Present
  • 情報処理エンジニア育成セミナー　　　　　　　　　　　　　　
    advisor
    茨城県, 01 Apr. 2020 - Present

Academic Contribution Activities

  • Technical Program Committee of IEEE Asia Pacific Conference on Wireless and Mobile　　　　　　　　　　　　　　　
    Planning etc
    IEEE Asia Pacific Conference on Wireless and Mobile, 01 Nov. 2020 - Present
  • Technical program Committee of IEEE International Conference on Internet of Things and Intelligence System　　　　　　　　　　　　　　　
    Planning etc
    IEEE International Conference on Internet of Things and Intelligence System, 12 Oct. 2020 - Present
  • 電子情報通信学会ITS/WBS英論文小特集編集委員　　　　　　　　　　　　　　　
    Planning etc
    01 May 2020 - Present
  • 信号処理学会論文編集委員　　　　　　　　　　　　　　　
    Review
    01 Apr. 2020 - Present
  • 電子情報通信学会ワイドバンドシステム研究専門委員会顧問　　　　　　　　　　　　　　　
    Planning etc
    電子情報通信学会, 01 May 2016 - Present
  • 電子情報通信学会ITS研究会顧問　　　　　　　　　　　　　　　
    Planning etc
    電子情報通信学会, 01 May 2013 - Present
  • IEEE Vehicular Technology Society,Tokyo/Japan Chapter Committee Member　　　　　　　　　　　　　　　
    Planning etc
    01 Jan. 2009 - Present
  • 電子情報通信学会査読委員　　　　　　　　　　　　　　　
    Peer review
    電子情報通信学会, 01 May 2003 - Present
  • Technical program Committee of Symposium on Future Telecommunication Technologies (SOFTT'2021)　　　　　　　　　　　　　　　
    Planning etc
    Symposium on Future Telecommunication Technologies (SOFTT'2021), 17 Jul. 2021 - 07 Dec. 2021
  • Technical program Committee of International Conference on Internet of Things and Intelligence System　　　　　　　　　　　　　　　
    Planning etc
    International Conference on Internet of Things and Intelligence System, 09 May 2021 - 24 Nov. 2021
  • Program Committee of IEEE International Conference on Artificial Intelligence and Big Data　　　　　　　　　　　　　　　
    Planning etc
    IEEE International Conference on Artificial Intelligence and Big Data, 01 Apr. 2021 - 29 Oct. 2021
  • Technical Program Committee of International Conference on ICT for Rural Development　　　　　　　　　　　　　　　
    Planning etc
    International Conference on ICT for Rural Development, 01 Apr. 2021 - 28 Oct. 2021
  • Technical Program Committee of International Conference on Industry 4.0, Artificial Intelligence, and Communications Technology　　　　　　　　　　　　　　　
    Planning etc
    International Conference on Industry 4.0, Artificial Intelligence, and Communications Technology, 24 Feb. 2021 - 28 Jul. 2021
  • Technical Program Committee of IEEE International Conference on Communication, Networks and Satellite　　　　　　　　　　　　　　　
    Planning etc
    15 Apr. 2021 - 18 Jul. 2021