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Mizutani, Keiichi

Graduate School of Informatics, Department of Informatics

Mizutani, Keiichi
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    Last Updated :2025/05/02

    Basic Information

    Professional Memberships

    • IEEE (The Institute of Electrical and Electronics Engineers)
    • 電子情報通信学会

    Academic Degree

    • Ph.D. in Engineering(Tokyo Institute of Technology)
    • Ph.D. in Engineering(Tokyo Institute of Technology)

    Academic Resume (Graduate Schools)

    • Tokyo Institute of Technology, 大学院理工学研究科電気電子工学専攻修士課程, 修了
    • Tokyo Institute of Technology, 大学院理工学研究科電気電子工学専攻博士後期課程, 修了

    Academic Resume (Undergraduate School/Majors)

    • Osaka Prefecture University, 工学部電気電子システム工学科, 卒業

    High School

    • High School

      本郷高等学校

    Research History

    • From Apr. 2025, To Present
      Nagoya University, Graduate School of Engineering Information and Communication Engineering, Professor
    • From Jun. 2024, To Sep. 2024
      Tottori University, Faculty of Engineering, 非常勤講師
    • From Oct. 2022, To Mar. 2025
      Kyoto University, Graduate School of Informatics, Associate Professor
    • From Apr. 2021, To Sep. 2022
      Kyoto University, Graduate School of Informatics, 特定准教授
    • From Jan. 2021, To Sep. 2022
      Kyoto University, School of Platforms, Program-Specific Associate Professor
    • From Oct. 2014, To Dec. 2020
      Kyoto University, Graduate School of Informatics, Assistant Professor
    • From Apr. 2016, To Sep. 2017
      Kyoto Institute of Technology, 工芸科学部, 非常勤講師
    • From Apr. 2012, To Sep. 2014
      National Institute of Information and Communications Technology (NICT), Researcher
    • From Apr. 2009, To Mar. 2012
      Japan Society for the Promotion of Science (JSPS), Research Fellow DC1
    • From Jun. 2010, To Sep. 2010
      Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institute (Berlin, Germany), Invited Researcher
    • From Oct. 2008, To Mar. 2009
      経済産業省 特許庁, 特許審査調査員(国際・新技術担当)

    Profile

    • Profile

      Dr. Keiichi Mizutani is an associate professor of Kyoto University. He received a B.E. degree in electric, electrical and system engineering from the Osaka Prefecture University, Japan, in 2007, and an M.E. and Ph.D. degree in electric and electrical engineering from the Tokyo Institute of Technology, Japan, in 2009 and 2012 respectively. He was an invited researcher at Fraunhofer Heinrich Hertz Institute, Germany, in 2010. From 2009 to 2012, he was a Research Fellow DC1 at Japan Society for the Promotion of Science (JSPS). From April 2012 to Sept. 2014, he was a researcher at National Institute of Information and Communications Technology (NICT). From Oct. 2014 to Dec. 2020, he was an assistant professor of Kyoto University. He currently researches the topics of physical layer technologies in White Space Communications, Dynamic Spectrum Access, and Wireless Smart Utility Networks (Wi-SUN) including OFDM, OFDMA, MIMO, and multi-hop relay network systems. Since joining in NICT, he has been involved in IEEE 802 standardization activities, namely 802.11af, 802.15.4m and 802.22b. He received the Special Technological Award and Best Paper Award from IEICE SR technical committee in 2009 and 2010 respectively, the Young Researchers Award from IEICE SRW technical committee in 2016, Certificate of Appreciation for outstanding contributions to the development of IEEE 802.15.4m-2014 from IEEE Standards Association, and Best Paper Award from WPMC in 2014, 2017, and 2020, respectively.

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    Website(s) (URL(s))

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      Last Updated :2025/05/02

      Research

      Research Topics, Overview of the research

      • Research Topics

         

      Research Interests

      • Software-Defined Radio
      • Cognitive Radio
      • Network Coding
      • Wireless System Emulation
      • Acoustic Communications
      • Terminal location estimation
      • Multi-hop Relay Systems
      • White Spaces
      • MIMO / Multiple Antenna Systems
      • OFDM Systems
      • IoT
      • Machine Learning
      • Dynamic Spectrum Access
      • Full-Duplex

      Research Areas

      • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Communication and network engineering

      Papers

      • Link-Level Evaluation of 5G NR and Potential for Spectrum-Sharing in the FR3 Band
        Keiichi Mizutani; Shota Mori; Naoki Yamamoto; Hiroshi Harada
        Proc. IEEE WCNC 2025, Mar. 2025, Peer-reviewed, Lead author, Corresponding author
      • Multi-Cell Expansion of Dynamic Full-Duplex Cellular Systems with Distributed Directional Base Station Reception Functions
        Yusei Yasuba; Keita Fukushima; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2025, Jan. 2025, Peer-reviewed
      • Open-Source Software-based gNB Prototype for Highly Spectral-Efficient Private 5G System
        Kazuki takeda; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2025, Jan. 2025, Peer-reviewed
      • Development and Basic Evaluation of a 5G-Based Real-Time Full-Duplex Cellular Prototype
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2025, Jan. 2025, Peer-reviewed
      • Nonlinear Digital Self-Interference Cancellation for 5G NR-Based In-Band Full-Duplex Systems
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CSCN 2024, Nov. 2024, Peer-reviewed
      • Dynamic Full-Duplex Cellular System for Wide Area IoT Network Backbone
        Keiichi Mizutani; Kazuki Nishikori; Kyoya Teramae; Hiroto Kuriki; Takeshi Matsumura; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Aug. 2024, Peer-reviewed, Lead author, Corresponding author
      • Open-Source Software-Based Beyond 5G Emulator for Evaluating Dynamic Full-Duplex Cellular System
        Kazuki Takeda; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VTC2024-Fall, Oct. 2024, Peer-reviewed
      • Inter-User Interference Cancellation Scheme for 5G-Based Dynamic Full-Duplex Cellular System
        Shota Mori; Keiichi MIzutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, May 2024, Peer-reviewed
      • A Study on Open-Loop Transmit Power Control for Scalable Cell-Free Networks
        Keita Fukushima; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2024, Jan. 2024, Peer-reviewed
      • Open-Source Software-Based Full-Stack Evaluation Platform of Simplified UTW-OFDM for Beyond 5G
        Kazuki Takeda; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VCC 2023, Nov. 2023, Peer-reviewed
      • High-Precision 5G-NR Downlink Signal Detection Sensor Developed Using Software-Defined Radio
        Yuto Sasaki; Shota Mori; Riichi Yokoyama; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VCC 2023, Nov. 2023, Peer-reviewed
      • Specification and Performance Analysis of Wi-SUN FAN
        Rei Hirakawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Oct. 2023, Peer-reviewed
      • Heterogeneous In-Band Full-Duplex for Simultaneous SUN-OFDM Transmission and SUN-FSK Reception
        Yudai Morikawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Internet of Things Journal, Sep. 2023, Peer-reviewed
      • Super-large-coverage Standardized Wireless Communication System and Its Implementation in VHF Band for IoT and V2X
        Kiminobu Makino; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Sep. 2023, Peer-reviewed
      • Mobility Enhancement for IEEE 802.15.4 SUN-OFDM Using Channel Estimation and Viterbi Decoder with Likelihood Ratio Adjustment Methods
        Yudai Morikawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Aug. 2023, Peer-reviewed
      • Design of 3GPP-based Millimeter-Wave Band Wireless Virtual Community Network
        Hiroshi Harada; Shota Mori; Norichika Ohmi; Yusuke Koda; Keiichi Mizutani
        2023 IEEE 97th Vehicular Technology Conference (VTC2023-Spring), Jun. 2023, Peer-reviewed
      • Experimental Study of Simplified UTW-OFDM Receiver Technology for Application to 5G Using Software-Defined Radio Platform
        Yuu Ichikawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Aug. 2023, Peer-reviewed
      • Heterogeneous In-Band Full-Duplex System for Simultaneous SUN-FSK Transmission and SUN-OFDM Reception
        Yudai Morikawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Jun. 2023, Peer-reviewed
      • A Digital Self-Interference Cancellation Scheme for In-Band Full-Duplex-Applied 5G System and its Software-Defined Radio Implementation
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, May 2023, Peer-reviewed
      • An Enhanced Channel Estimation for IEEE 802.15.4 OFDM Receiver in High-speed Mobile IoT Communication Systems
        Hidetomo Ochiai; Yudai Morikawa; Keiichi Mizutani; Hiroshi Harada
        IEEE Internet of Things Journal, Feb. 2023, Peer-reviewed
      • Software-Defined Radio-Based 5G Physical Layer Experimental Platform for Highly Mobile Environments
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Jan. 2023, Peer-reviewed
      • Throughput Enhancement of Dynamic Full-Duplex Cellular System by Distributing Base Station Reception Function
        Keita Fukushima; Shota Mori; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Dec. 2022, Peer-reviewed
      • Highly Efficient Relay Routing Method for 5G Cellular V2V Communications
        Daiki Kawamatsu; Keiichi Mizutani; Hiroshi Harada
        Proceedings of IEEE CSCN 2022, Nov. 2022, Peer-reviewed
      • Performance Evaluation of 5G in VHF Band for Super-large Coverage Communication Systems
        Hiroshi Harada; Shota Mori; Keiichi Mizutani
        Proceedings of IEEE CSCN 2022, Nov. 2022, Peer-reviewed
      • Power Amplifire Linearization Using orthogonal Polynomial Indentified in Frequency Domain
        Michiharu Nakamura; Keiichi Mizutani; Hiroshi Harada; Takeshi Matsumura
        Proc. WPMC2022, Oct. 2022, Peer-reviewed
      • Video Transmission Trial by Wireless Multi-hop Network based on Wi-SUN FAN
        Reo Gakumi; Hiroko Masaki; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC2022, Oct. 2022, Peer-reviewed
      • Radio-Protected Area Estimation Model Using Location-Dependent Gain for a Spectrum Sharing System in the VHF-Band
        Keika Minaki; Sohei Yanase; Shingo Tomida; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Oct. 2022, Peer-reviewed
      • Highly Efficient OFDM Applying Symbol-Edges Truncating Transmission Technique
        Yuu Ichikawa; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VTC2022-Fall, Sep. 2022, Peer-reviewed
      • Digital Self-Interference Cancellation Scheme for Full-Duplex Cellular System in 5G
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE PIMRC 2022, Sep. 2022, Peer-reviewed
      • Experimental Evaluation of IEEE 802.15.4 OFDM for Wireless IoT Communication Systems
        Keito Nakura; Naoki Ishibashi; Hiroko Masaki; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE PIMRC 2022, Sep. 2022, Peer-reviewed
      • Development of Full-Duplex Cellular System for Beyond 5G and 6G Systems
        Hiroshi Harada; Keiichi Mizutani; Takeshi Matsumura; Toyoyuki Kato; Ken Shioiri
        Proc. IEEE PIMRC 2022, Sep. 2022, Peer-reviewed
      • Quantization Noise Reduction by Digital Signal Processing-Assisted Analog-to-Digital Converter for In-Band Full-Duplex Systems
        Keiichi Mizutani; Hiroshi Harada
        IEEE Transactions on Wireless Communications, Aug. 2022, Peer-reviewed, Lead author, Corresponding author
      • IEEE 802.15.4g/4x-Based Orthogonal Frequency-Division Multiplexing Transmission Scheme for Wide-Area and Mobile IoT Communication Systems
        Shunsuke Kadoi; Hidetomo Ochiai; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEEE Internet of Things Journal, 15 Jul. 2022, Peer-reviewed
      • Single-cell Dynamic Duplex Cellular System Using Distributed Receive-only Base Stations
        Keita Fukushima; Shota Mori; Keiichi Mizutani; Hiroshi Harada
        2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring), Jun. 2022, Peer-reviewed
      • Software-Defined Radio-Based Evaluation Platform for Highly Mobile IEEE 802.22 System
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        IEEE Open Journal of Vehicular Technology, Apr. 2022, Peer-reviewed
      • In-Band Full-Duplex-Applicable Area Expansion by Inter-User Interference Reduction Using Successive Interference Cancellation
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        IEICE Transactions on Communications, 01 Feb. 2022, Peer-reviewed
      • Wi-SUN FAN Multi-hop Network in Coexistence of IEEE 802.15.4 FSK and OFDM Transmission Schemes
        Hidetomo Ochiai; Keiichi Mizutani; Hiroshi Harada
        2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC), 14 Dec. 2021, Peer-reviewed
      • A Receiver for IEEE 802.15.4-based High-speed Mobile IoT Communication Systems
        Hidetomo Ochiai; Keiichi Mizutani; Hiroshi Harada
        2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC), 14 Dec. 2021, Peer-reviewed
      • Radio Sensor Development for Location Estimation Using Radio Big Data of ARIB STD-T103/119-compliant Wireless Communication Systems
        Masayuki Ishizaki; Kiyoshi Yamamoto; Masahiro Asano; Keiichi Mizutani; Hiroshi Harada
        2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC), 14 Dec. 2021, Peer-reviewed
      • Determining Memory Polynomial Model Parameters from Those of Complex p-th Order Inverse for Designing Predistorter
        Michiharu Nakamura; Eisuke Fukuda; Yoshimasa Daido; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Transactions on Communications, 01 Nov. 2021, Peer-reviewed
      • Highly Efficient Sensing Methods of Primary Radio Transmission Systems toward Dynamic Spectrum Sharing-Based 5G Systems
        Atomu SAKAI; Keiichi MIZUTANI; Takeshi MATSUMURA; Hiroshi HARADA
        IEICE Transactions on Communications, 01 Oct. 2021, Peer-reviewed
      • Channel Measurement and Modeling Prototype for IEEE 802.22-Based Regional Area Networks
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        IEEE Access, Oct. 2021, Peer-reviewed
      • Feasibility Study of Wi-SUN JUTA Profile-Compliant F-RIT Protocol
        Ryota OKUMURA; Keiichi MIZUTANI; Hiroshi HARADA
        IEICE Transactions on Communications, Oct. 2021, Peer-reviewed
      • Inter-Carrier Interference Cancellation for 5G System Applying Simplified Universal Time-domain Windowed OFDM
        Yuu Ichikawa; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), Sep. 2021, Peer-reviewed
      • Highly Efficient Demodulation Scheme for In-band Full-duplex Using Heterogeneous Wireless Communication Schemes
        Yudai Morikawa; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), Sep. 2021, Peer-reviewed
      • A Novel Routing Method with Load-Balancing in Wi-SUN FAN Network
        Rei Hirakawa; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 7th World Forum on Internet of Things (WF-IoT), 14 Jun. 2021, Peer-reviewed
      • Efficient Polling Communications for Multi-Hop Networks Based on Receiver-Initiated MAC Protocol
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Transactions on Communications, 01 May 2021, Peer-reviewed
      • Data Rate Enhancement of FSK Transmission Scheme for IEEE 802.15.4-Based Field Area Network
        Yueying Xiang; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEEE Sensors Journal, 01 Apr. 2021, Peer-reviewed
      • Inter-User Interference Reduction Applying Successive Interference Cancellation for Dynamic-duplex Cellular System
        Shota Mori; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), Apr. 2021, Peer-reviewed
      • An Initial Study of Dynamic-Duplex Cellular System on 5G NR Downlink in High SHF Band
        Yuya Arakawa; Kazuki Nishikori; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        2021 IEEE 18th Annual Consumer Communications & Networking Conference (CCNC), 09 Jan. 2021, Peer-reviewed
      • Radio Protection Area Estimation Methods for Spectrum Sharing-based 5G System
        Shingo Tomida; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 18th Annual Consumer Communications & Networking Conference (CCNC), 09 Jan. 2021, Peer-reviewed
      • A Routing Protocol toward Reliable Mobile Communication in Wi-SUN FAN
        Robby Wayong; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        2021 IEEE 18th Annual Consumer Communications & Networking Conference (CCNC), 09 Jan. 2021, Peer-reviewed
      • A High-speed Wi-SUN FAN Network by Highly-Dense Frequency Hopping
        Hidetomo Ochiai; Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), Nov. 2020, Peer-reviewed
      • Channel Modeling Algorithm for TVWS-based IEEE 802.22 WRAN System in Rural Areas
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), Nov. 2020, Peer-reviewed
      • High-efficient Sensing Methods of Primary Wireless Transmission System for Dynamic Spectrum Sharing-based 5G System
        Atomu Sakai; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2020, Oct. 2020, Peer-reviewed
      • Development of Evaluation Platform for IEEE 802.22-based Highly Mobile WRAN Communication System with an SDR-based Receiver
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2020, Oct. 2020, Peer-reviewed
      • Analytical Model of Quantization Noise for In-Band Full-duplex Wireless Communications
        Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2020, Oct. 2020, Peer-reviewed, Lead author
      • Coexistence of Synchronous and Asynchronous MAC Protocols for Wireless IoT Systems in Sub-Gigaherz Band
        Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE WF-IoT 2020, Jun. 2020, Peer-reviewed
      • Data Rate Enhancement for IEEE 802.15.4 Based FSK Transmission Scheme
        Yueying Xiang; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE WF-IoT 2020, Jun. 2020, Peer-reviewed
      • A Scheduling Scheme for Channel Hopping in Wi-SUN FAN Systems toward Data Throughput Enhancement
        Robby Wayong; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VTC 2020-Spring, May 2020, Peer-reviewed
      • Self-interference Cancellation Utilizing Superposition Modulation Technique for Single Carrier Full-duplex System
        Shuzhi Liu; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE VTC 2020-Spring, May 2020, Peer-reviewed
      • Enhanced Universal Filtered-DFTs-OFDM for Long-Delay Multipath Environment
        Yuji MIZUTANI; Hiroto KURIKI; Yosuke KODAMA; Keiichi MIZUTANI; Takeshi MATSUMURA; Hiroshi HARADA
        IEICE Transactions on Communications, 01 Apr. 2020, Peer-reviewed
      • Dependable Source Routing Scheme for Multi-Hop Networks Based on Receiver-Initiated MAC Protocol
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2020, Jan. 2020, Peer-reviewed
      • A Home Area Heterogeneous Wireless Management Scheme by Wi-SUN FAN and Wi-Fi Systems
        Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2020, Jan. 2020, Peer-reviewed
      • Evaluation of CSL-based Low Power MAC Protocol for Wireless Smart Metering Networks
        Kai Samejima; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2020, Jan. 2020, Peer-reviewed
      • Stabilization of Multi-Hop Routing Construction in Wi-SUN FAN Systems
        Daiki Hotta; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2020, Jan. 2020, Peer-reviewed
      • Wireless Smart Ubiquitous Network by CSL-based Low Power MAC Protocol
        Kai Samejima; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2020, Jan. 2020, Peer-reviewed
      • A Simplified Memory Polynomial Predistorter Using Restricted LTI Block Parameters
        Michiharu NAKAMURA; Yasuyuki OHISHI; Eisuke FUKUDA; Yoshimasa DAIDO; Keiichi MIZUTANI; Takeshi MATSUMURA; Hiroshi HARADA
        IEICE Trans. Electron., Dec. 2019, Peer-reviewed
      • A Reliable Channel Estimation Scheme Using Scattered Pilot Pattern for IEEE 802.22-Based Mobile Communication System
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING, Dec. 2019, Peer-reviewed
      • Possibility of Dynamic Spectrum Sharing System by VHF-band Radio Sensor and Machine Learning
        Takayuki Hayashida; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE DySPAN 2019 Workshop on DD-DSS, Nov. 2019, Peer-reviewed
      • UTW-OFDM-based 5G New Radio with Low Out-of-band Emission
        Riichi Yokoyama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC), Nov. 2019, Peer-reviewed
      • Enhancement of User Perceived Throughput in Sub-6 GHz Integrated Access and Backhaul with Dynamic Full-duplex
        Kyoya Teramae; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE VTC 2019-Fall, Sep. 2019, Peer-reviewed
      • User Throughput Enhancement with Dynamic Full-Duplex Cellular System in Dense Urban Multi-cell Environment
        Kazuki Nishikori; Kyoya Teramae; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE PIMRC 2019, Sep. 2019, Peer-reviewed
      • Comprehensive Performance Evaluation of Universal Time-Domain Windowed OFDM-Based LTE Downlink System
        Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Transactions on Communications, Aug. 2019, Peer-reviewed, Lead author
      • Performance Evaluation of Multi-hop Network Configuration for Wi-SUN FAN Systems
        Thidarut Junjalearnvong; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2019, Jan. 2019, Peer-reviewed
      • A Low-pass Filtered Time-domain Window for DFTs-OFDM to Reduce Out-of-band Emission with Low Complexity
        Yuji Mizutani; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE CCNC 2019, Jan. 2019, Peer-reviewed
      • Analysis and Experimental Verification of F-RIT Protocol for Wireless Smart Utility Network
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE CCNC 2019, Jan. 2019, Peer-reviewed
      • Enhanced F-RIT Protocol for Wireless Smart Utility Networks with High Traffic Bi-Directional Communications
        Ryota Okumura; Jun Fujiwara; Keiichi Mizutani; Hiroshi Harada
        IEICE TRANSACTIONS ON COMMUNICATIONS, Dec. 2018, Peer-reviewed
      • A TV White Space Wireless Broadband Prototype for Wireless Regional Area Network
        Hiroshi Harada; Kiminobu Makino; Keiichi Mizutani; Takeshi Matsumura
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • Macro-Cell Capacity Enhancement with Dynamic Full-Duplex Cellular System
        Takeshi Matsumura; Hiroto Kuriki; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • Performance Evaluation of Universal Time-domain Windowed GFDM-based LTE Uplink
        Keiichi Mizutani; Yosuke Kodama; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed, Lead author
      • A Low Pass Filtered-Raised-Cosine Window for UTW-DFTs-OFDM
        Yuji Mizutani; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • A Robust Channel Estimation for IEEE 802.22 Enabling Wide Area Vehicular Communication
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • Practical Analysis of CSL Low Power MAC Protocol Based on IEEE 802.15.4e Frame Structure
        Kai Samejima; Ryota Okumura; Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • An Effective Near-Field Measurement Using Multicarrier Modulation Signal
        Riichi Yokoyama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada; Masaaki Fuse; Hanako Noda
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • A Frequency-domain ICI Cancellation Using Weight Matrix Based on Window Shape for Simplified UTW-OFDM
        Akihito Yoshito; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2018, Nov. 2018, Peer-reviewed
      • A Load Balancing Algorithm for Layer 2 Routing in IEEE 802.15.10
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE TRANSACTIONS ON COMMUNICATIONS, Oct. 2018, Peer-reviewed
      • A Dynamic Routing Protocol Supporting Mobile Nodes in Wi-SUN FAN Systems
        Thidarut Junjalearnvong; Takuya Habara; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed
      • LTE Uplink System Based on Universal Time-domain Windowed DFTs-OFDM
        Yosuke Kodama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed
      • Time-domain Channel Equalization for Subcarrier Spacing Compressed FDM with SC-MMSE Turbo Equalization Receiver
        Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed
      • A Transceiver Design of VHF Band Standardized Broadband Mobile Communications Systems
        Kiminobu Makino; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed
      • Performance Evaluation of TD-LTE in VHF-band for Large Coverage Public Broadband Communications System
        Keiichi Mizutani; Hiroto Kuriki; Yosuke Kodama; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed, Lead author
      • A Comprehensive Study of Universal Time-domain Windowed OFDM-based LTE Downlink System
        Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed, Lead author
      • A UTW-OFDM Without Symbol Overlapping Process for Small Cell Networks
        Akihito Yoshito; Yosuke Kodama; Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. WPMC 2017, Dec. 2017, Peer-reviewed
      • Feasibility Study of F-RIT Low-power Consumption MAC Protocol Complied with IEEE 802.15.4/4e for Wireless Smart Utility Networks
        Fujiwara Jun; Okumura Ryota; Mizutani Keiichi; Harada Hiroshi
        IEEJ Transactions on Electronics, Information and Systems, Nov. 2017, Peer-reviewed
      • Enhanced Universal Filtered-DFTs-OFDM for Long-delay Multi-path Environment
        Yuji Mizutani; Hiroto Kuriki; Yosuke Kodama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE PIMRC 2017, Oct. 2017, Peer-reviewed
      • Experimental Evaluation of Universal Time-domain Windowed OFDM-based LTE Downlink System by Real-time Wave-shaping
        Keiichi Mizutani; Akihito Yoshito; Hiroto Kuriki; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE PIMRC 2017, Oct. 2017, Peer-reviewed
      • IEEE 802.15.4g Based Wi-SUN Communication Systems
        Hiroshi Harada; Keiichi Mizutani; Jun Fujiwara; Kentaro Mochizuki; Kentaro Obata; Ryota Okumura
        IEICE TRANSACTIONS ON COMMUNICATIONS, Jul. 2017, Peer-reviewed
      • Compact IEEE 802.22-based Radio Equipment Enabling Easy Installation for Regional Area Network System using TV White-spaces
        Takeshi Matsumura; Hiroki Ueno; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE LANMAN 2017, Jul. 2017, Peer-reviewed
      • A Load Balancing Algorithm for Layer 2 Routing based Wi-SUN Systems
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VTC 2017-Spring, Jun. 2017, Peer-reviewed
      • Enhanced UF-OFDM for Long-delay Multipath Fading Environment
        Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEEE VTC 2017-Spring, Jun. 2017, Peer-reviewed
      • A Broadcast Protocol for IEEE 802.15.4e RIT Based Wi-SUN Systems
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE VTC 2017-Spring, Jun. 2017, Peer-reviewed
      • Experimental Evaluation and Analysis of F-RIT Low Power MAC Protocol Complied with IEEE 802.15.4e
        Ryota Okumura; Jun Fujiwara; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE WCNC 2017, Mar. 2017, Peer-reviewed
      • An Implementable Channel and CFO Estimation Scheme for IEEE 802.22-based Radio Equipment
        Hiroki Ueno; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEEE WCNC 2017 Workshop on Smart Spectrum, Mar. 2017, Peer-reviewed
      • Development and field experiment of wide area Wi-SUN system based on IEEE 802.15.4g
        Kentaro Mochizuki; Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        2016 IEEE 3rd World Forum on Internet of Things (WF-IoT), Dec. 2016, Peer-reviewed
      • Ultra-low Power MAC Protocol Complied with RIT in IEEE 802.15.4e for Wireless Smart Utility Networks
        Jun Fujiwara; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada; Sota Tsuchiya; Takuya Kawata
        2016 IEEE 27TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC), Nov. 2016, Peer-reviewed, Last author
      • Ultra-low power MAC protocol complied with RIT in IEEE 802.15.4e for wireless smart utility networks
        Jun Fujiwara; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada; Sota Tsuchiya; Takuya Kawata
        2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Sep. 2016, Peer-reviewed
      • Carrier frequency offset estimation scheme for IEEE 802.15.4g based wide area Wi-SUN systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        2016 IEEE International Conference on Communications (ICC), May 2016, Peer-reviewed
      • Carrier frequency offset estimation scheme for IEEE 802.15.4g based wide area Wi-SUN systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        2016 IEEE International Conference on Communications (ICC), May 2016, Peer-reviewed
      • Some Initial Results and Observations from a Series of Trials within the Ofcom TV White Spaces Pilot
        Oliver Holland; Shuyu Ping; Nishanth Sastry; Pravir Chawdhry; Jean-Marc Chareau; James Bishop; Hong Xing; Suleyman Taskafa; Adnan Aijaz; Michele Bavaro; Philippe Viaud; Tiziano Pinato; Emanuele Anguili; Mohammad Reza Akhavan; Julie McCann; Yue Gao; Zhijin Qin; Qianyun Zhang; Raymond Knopp; Florian Kaltenberger; Dominique Nussbaum; Rogerio Dionisio; Jose Ribeiro; Paulo Marques; Juhani Hallio; Mikko Jakobsson; Jani Auranen; Reijo Ekman; Heikki Kokkinen; Jarkko Paavola; Arto Kivinen; Tomaz Solc; Mihael Mohorcic; Ha-Nguyen Tran; Kentaro Ishizu; Takeshi Matsumura; Kazuo Ibuka; Hiroshi Harada; Keiichi Mizutani
        2015 IEEE 81st Vehicular Technology Conference (VTC Spring), May 2015, Peer-reviewed
      • IEEE 802.11af Indoor Experiment in UK Ofcom TVWS Trial Pilot Program
        Keiichi Mizutani; Kentaro Ishizu; Takeshi Matsumura; Ha Nguyen Tran; Hirokazu Sawada; Homare Murakami; Fumihide Kojima; Hiroshi Harada
        2015 IEEE 81st Vehicular Technology Conference (VTC Spring), May 2015, Peer-reviewed
      • Path Loss and Throughput Estimation Models for an IEEE 802.11af Prototype
        Hirokazu Sawada; Keiichi Mizutani; Kentaro Ishizu; Takeshi Matsumura; Ha-Nguyen Tran; Homare Murakami; Fumihide Kojima; Hiroshi Harada
        2015 IEEE 81st Vehicular Technology Conference (VTC Spring), May 2015, Peer-reviewed
      • Propagation Measurement for TVWS interference Evaluation
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada
        2014 Asia-Pacific Microwave Conference, Nov. 2014, Peer-reviewed
      • Building Penetration Loss Measurements for TVWS Systems
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada
        2014 Asia-Pacific Microwave Conference, Nov. 2014, Peer-reviewed
      • Propagation Loss Model in Short Range LoS Environment for TV White Space Systems using Low Antenna Height Base Station
        Kan Tomoshige; Sawada Hirokazu; Mizutani Keiichi; Ishizu Kentaro; Murakami Homare; Harada Hiroshi; Takada Jun-ichi
        The Journal of The Institute of Image Information and Television Engineers, Oct. 2014, Peer-reviewed
      • Field experiment of long-distance broadband communications in TV white space using IEEE 802.22 and IEEE 802.11af
        Kentaro Ishizu; Keigo Hasegawa; Keiichi Mizutani; Hirokazu Sawada; Kei Yanagisawa; Toh Keat-Beng; Takeshi Matsumura; Seishi Sasaki; Masahiro Asano; Homare Murakami; Hiroshi Harada
        2014 International Symposium on Wireless Personal Multimedia Communications (WPMC), Sep. 2014, Peer-reviewed
      • IEEE 802.11af TVWS-WLAN with Partial Subcarrier System for Effective TVWS Utilization
        Keiichi Mizutani; Zhou Lan; Hiroshi Harada
        IEICE TRANSACTIONS ON COMMUNICATIONS, Apr. 2014, Peer-reviewed
      • Time-Domain Windowing Design for IEEE 802.11af Based TVWS-WLAN Systems to Suppress Out-of-Band Emission
        Keiichi Mizutani; Zhou Lan; Hiroshi Harada
        IEICE TRANSACTIONS ON COMMUNICATIONS, Apr. 2014, Peer-reviewed
      • Adaptive time-domain windowing based transmit power control for TVWS-WLAN systems
        Keiichi Mizutani; Hiroshi Harada
        2014 IEEE Wireless Communications and Networking Conference (WCNC), Apr. 2014, Peer-reviewed
      • IEEE 802.11af with Partial Subcarrier System for effective use of TV White Spaces
        Keiichi Mizutani; Zhou Lan; Ryuhei Funada; Hiroshi Harada
        Proc. IEEE ICC 2013 Workshop Telecom R2S, Jun. 2013, Peer-reviewed, Lead author
      • Design and implementation of a Wi-Fi prototype system in TVWS based on IEEE 802.11 af
        Zhou Lan; Keiichi Mizutani; Gabriel Villardi; Hiroshi Harada
        2013 IEEE Wireless Communications and Networking Conference (WCNC), Apr. 2013, Peer-reviewed
      • Experiment on MIMO two-way relaying using transmit beamforming
        Vutha Va; Keiichi Mizutani; Yutaro Kida; Kei Sakaguchi; Kiyomichi Araki; Takehiro Miyamoto
        2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC), Sep. 2012, Peer-reviewed
      • Experimental Study of Doppler Effect for Underwater Acoustic Communication Using Orthogonal Signal Division Multiplexing
        Tadashi Ebihara; Keiichi Mizutani
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2012, Peer-reviewed
      • Network Synchronization Scheme for Scalable Two-Way Multi-Hop Network Employing MIMO Network Coding
        Yutaro Kida; Keiichi Mizutani; Gia Khanh Tran; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        2012 IEEE 75th Vehicular Technology Conference (VTC Spring), May 2012, Peer-reviewed
      • Prototype Hardware for TDD Two-Way Multi-Hop Relay Network Using MIMO Network Coding
        Keiichi Mizutani; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        IEICE TRANSACTIONS ON COMMUNICATIONS, May 2012, Peer-reviewed
      • Multi-user Data Sharing Using Coordinator with Network Coding and Layered Transmission
        Keiichi Mizutani; Thomas Haustein; Kei Sakaguchi
        Proc. EWC 2012, Apr. 2012, Peer-reviewed, Invited, Lead author
      • Performance Analysis of MIMO Relay Network via Propagation Measurement in L-Shaped Corridor Environment
        Namzilp Lertwiram; Gia Khanh Tran; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        IEICE TRANSACTIONS ON COMMUNICATIONS, Apr. 2012, Peer-reviewed
      • Study of Doppler Shift Correction for Underwater Acoustic Communication Using Orthogonal Signal Division Multiplexing
        Tadashi Ebihara; Keiichi Mizutani
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2011, Peer-reviewed
      • Realization of TDD Two-way Multi-hop Relay Network with MIMO Network Coding
        Keiichi Mizutani; Yutaro Kida; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        Proceedings of the 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, Jun. 2011, Peer-reviewed
      • Network throughput of TDD/TDMA two-way multi-hop relay network with MIMO network coding in indoor environment
        Keiichi Mizutani; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops, Sep. 2010, Peer-reviewed
      • Complexity Suppression of Neural Networks for PAPR Reduction of OFDM Signal
        Masaya Ohta; Keiichi Mizutani; Katsumi Yamashita
        IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, Sep. 2010, Peer-reviewed
      • Network Synchronization for Two-Way Multi-Hop Relay Networks with Block Modulation
        Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        2010 IEEE 71st Vehicular Technology Conference, May 2010, Peer-reviewed
      • MIMO Radio Propagation Measurement for Two-Hop Relay Network on L-Shaped Corridor with Network Performance Analysis
        Namzilp Lertwiram; Gia Khanh Tran; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        2010 IEEE 71st Vehicular Technology Conference, May 2010, Peer-reviewed
      • Hardware Prototype for Two-Way Multi-Hop Relay Network with MIMO Network Coding
        Keiichi Mizutani; Takehiro Miyamoto; Takamichi Kanno; Kei Sakaguchi; Kiyomichi Araki
        2010 IEEE 71st Vehicular Technology Conference, 2010, Peer-reviewed
      • Phase Shift Keying Acoustic Communication in Air with Impulse Response
        Tadashi Ebihara; Keiichi Mizutani; Takeshi Ohbuchi; Naoto Wakatsuki; Koichi Mizutani; Koichi Morikawa
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2009, Peer-reviewed
      • Locality of Area Coverage on Digital Acoustic Communication in Air using Differential Phase Shift Keying
        Keiichi Mizutani; Tadashi Ebihara; Naoto Wakatsuki; Koichi Mizutani
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2009, Peer-reviewed
      • Differential Phase Shift Keying Acoustic Communication in Air for Low-Signal-to-Noise Ratio Environment
        Keiichi Mizutani; Naoto Wakatsuki; Koichi Mizutani
        JAPANESE JOURNAL OF APPLIED PHYSICS, Aug. 2008, Peer-reviewed
      • Complexity suppression of neural networks for PAPR reduction of OFDM signal and its FPGA implementation
        Masaya Ohta; Keiichi Mizutani; Naoki Fujita; Katsumi Yamashita
        2008 IEEE International Joint Conference on Neural Networks (IEEE World Congress on Computational Intelligence), Jun. 2008, Peer-reviewed
      • A PAPR reduction of OFDM signal using neural networks with tone injection scheme
        Keiichi Mizutani; Masaya Ohta; Yasuo Ueda; Katsumi Yamashita
        2007 6th International Conference on Information, Communications & Signal Processing, Dec. 2007, Peer-reviewed
      • Acoustic Communication in Air Using Differential Biphase Shift Keying with Influence of Impulse Response and Background Noise
        Keiichi Mizutani; Naoto Wakatsuki; Koichi Mizutani
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2007, Peer-reviewed, Lead author
      • Relationship between Time of Flight (TOF) Measurement Error and Phase Characteristics of Sound Probe
        Ikuo Odanaka; Keiichi Mizutani; Koichi Mizutani
        Proc. ICSV13, Jul. 2006, Peer-reviewed
      • Differential Biphase Shift Keying (DBPSK) Using Airborne Sound for Data Communication
        Keiichi Mizutani; Naoto Wakatsuki; Koichi Mizutani
        Proc. ICSV13, Jul. 2006, Peer-reviewed, Lead author

      Misc.

      • UL clustering method considering multi-user interference for cell-free wireless network
        Yusei Yasuba; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Dec. 2024
      • 疑似干渉生成機構を用いた5Gマルチセルエミュレーションシステム
        鳴川偉仁; 武田和樹; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jul. 2024
      • ソフトウェア無線機を用いたオープンソース型5Gプラットフォームによる高能率OFDM方式に関する一検討
        武田和樹; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2024, Invited
      • 5Gアップリンクに重畳する受信機能分散型基地局によるDynamic Full-Duplexセルラシステムのマルチセル拡張技術
        休場裕生; 福島慶大; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jan. 2024
      • Wi-SUN FANの概要,伝送特性,今後の展望
        原田博司; 正木弘子; 水谷圭一
        電子情報通信学会技術研究報告, Jan. 2024, Invited, Last author
      • 帯域内全二重通信の段階的導入を実現するDynamic Full-Duplex Cellularシステム
        水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Oct. 2023, Invited, Lead author, Corresponding author
      • オープンソース型5GプラットフォームへのSimplified UTW-OFDM方式の導入とその基礎特性
        武田和樹; 水谷圭一; 原田博司
        電子情報通信学会ソサイエティ大会講演予稿集, Sep. 2023
      • 5G信号を用いたFull-Duplex Cellularシステムにおける端末間干渉低減手法の基礎特性評価
        森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jul. 2023
      • Cell-free wireless Networkのための送信電力制御に関する一検討
        福島慶大; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jul. 2023
      • ソフトウェア無線機による5Gダウンリンク信号高精度検出電波センサの開発と基礎特性評価
        佐々木祐斗; 森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2023
      • オープンソース型プラットフォームによるSimplified UTW-OFDM方式を導入した5Gエミュレータの基礎伝送特性評価
        武田和樹; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2023
      • オープンソース型5GプラットフォームへのSimplified UTW-OFDM方式実装に関する一検討
        武田和樹; 水谷圭一; 原田博司
        電子情報通信学会総合大会講演予稿集, Mar. 2023
      • 異種無線システムを用いた周波数共用5Gシステムに関する研究開発
        水谷圭一; 原田博司; 石﨑雅之; 山本清志; 浅野勝洋
        電子情報通信学会技術研究報告, Mar. 2023, Invited, Lead author, Corresponding author
      • 6G時代のミリ波無線通信システム
        原田博司; 森聖太; 大見則親; 香田優介; 水谷圭一
        電子情報通信学会技術研究報告, Mar. 2023, Invited
      • VHF帯電波受信電力遷移情報を用いたテンプレートマッチングによる高精度端末位置推定手法
        皆木渓夏; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2023
      • VHF帯電波ビッグデータと 機械学習による端末位置推定
        水谷圭一
        ITコンソーシアム京都 AI・IoT活用部会講演会, Jan. 2023, Invited, Lead author, Corresponding author
      • 次世代公共用自営無線通信システムを志向した周波数共用および電波応用利用技術に関する検討
        水谷圭一; 原田博司
        令和4年度電気関係学会関西連合大会講演予稿集, Nov. 2022, Invited, Lead author, Corresponding author
      • VHF帯電波ビッグデータと機械学習を用いた端末位置推定手法
        水谷圭一
        日本学術会議 電気電子工学委員会URSI分科会 無線通信システム信号処理小委員会(URSI-C小委員会)第25期 第4回公開研究会, Sep. 2022, Invited, Lead author, Corresponding author
      • 送信シンボル時間短縮を用いた高能率STT-OFDM方式の基礎伝送特性
        市川遊; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2022
      • SUN-FSK信号送信とSUN-OFDM信号受信を同時実現する異種無線通信方式全二重通信システム
        森川雄大; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2022
      • VHF帯電波ビッグデータを用いた位置推定手法のための広域系WRANシステム電波モニタリング手法の屋外検証
        山本清志; 石﨑雅之; 浅野勝洋; 水谷圭一; 原田博司
        電子情報通信学会総合大会講演予稿集, Mar. 2022
      • 5Gアップリンク信号検出のための電波センサに関する検討
        水谷圭一; 速水誠太; 原田博司
        電子情報通信学会総合大会講演予稿集, Mar. 2022, Lead author, Corresponding author
      • VHF帯における周波数共用のための高効率電波保護領域算出モデル
        皆木渓夏; 富田晋伍; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2022
      • VHF帯電波センシング情報を活用したSub-6GHz帯周波数共用システムにおける電波保護領域推定法
        富田晋伍; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2022
      • 5G信号を用いたFull-Duplex Cellularシステム実現のためのディジタル自己干渉キャンセル方式
        森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2022
      • 5G信号を用いたFull-Duplex Cellularシステムの物理層無線通信プロトタイプの基礎通信特性
        森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2022
      • 受信機能分散型基地局によるシングルセルDynamic Duplex Cellularシステムの基本伝送特性
        福島慶大; 森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2022
      • Wi-SUN FAN ネットワークにおける上りリンク用環境適応送信電力制御法
        石橋直樹; 平川怜; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jan. 2022
      • 6Gを志向した波形整形OFDM方式
        水谷圭一; 原田博司
        令和3年度電気関係学会関西連合大会講演予稿集, Dec. 2021, Invited, Lead author, Corresponding author
      • 階層的クラスタリング機械学習による遅延プロファイルを用いた端末位置推定
        平田詢; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Nov. 2021
      • 6Gを志向した短距離無線通信技術に関する検討
        水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2021, Lead author, Corresponding author
      • IEEE 802.15.4 OFDM伝送方式を用いたWi-SUN FANシステムの伝送特性に関する研究
        落合英智; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2021
      • ユニバーサル時間軸窓型OFDMを用いた5Gシステムにおける高能率受信技術
        市川遊; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2021
      • 異種無線通信方式を用いた全二重通信システムにおける高能率復調法
        森川雄大; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2021
      • 電波ビッグデータを用いた位置推定手法のための広域系WRANシステム電波モニタリングに関する一検討
        石﨑雅之; 山本清志; 浅野勝洋; 水谷圭一; 原田博司
        電子情報通信学会総合大会講演予稿集, Mar. 2021
      • IoT用環境適応型無線通信システムを志向したIEEE 802.15.4 OFDM伝送方式
        門井駿介; 落合英智; 奥村亮太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Mar. 2021
      • 帯域内全二重通信における量子化雑音解析モデル
        水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jan. 2021, Lead author, Corresponding author
      • 逐次干渉キャンセラを用いたDynamic Duplex Cellularシステムにおける端末間干渉低減法
        森聖太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jan. 2021
      • 高SHF帯5G NRダウンリンクに重畳するDynamic-Duplexセルラシステムの基礎特性評価
        荒川侑也; 錦織和樹; 水谷圭一; 松村武; 原田博司
        電子情報通信学会技術研究報告, Nov. 2020
      • 近距離無線通信技術を用いた接触可能性検知システムにおける障害物の影響
        正木弘子; ワヨンロビー; 奥村亮太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Nov. 2020, Invited
      • Beyond 5G システムを志向したDynamic-Duplex セルラシステム
        原田博司; 水谷圭一; 松村武
        MWE2020, Nov. 2020
      • ダイナミック周波数共用 Beyond 5G システム実現のための電波センサ技術
        原田博司; 水谷圭一; 松村武
        電子情報通信学会ソサイエティ大会講演予稿集, Sep. 2020
      • 周波数共用型5Gシステムにおける電波保護領域推定技術
        富田晋伍; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2020
      • A Routing Protocol toward Seamless Handover for Mobile Nodes in Wi-SUN FAN
        Robby Wayong; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        電子情報通信学会技術研究報告, Aug. 2020
      • 広域系WRANによる電波ビッグデータを用いた高能率周波数共用システムの研究開発概要
        水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2020, Invited, Lead author, Corresponding author
      • 無線フィールドエリアネットワークにおけるバッテリ駆動端末向けMACプロトコルの特性解析
        奥村亮太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2020
      • 近距離無線通信技術を用いた接触可能性検知システムの基礎特性
        正木弘子; 奥村亮太; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Aug. 2020
      • Channel Modeling Algorithm for Rural Area Communication System in TV White Spaces
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        電子情報通信学会技術研究報告, Jul. 2020
      • 同期信号即時解析に向けたVHF帯ブロードバンド移動通信システムの高速受信ゲイン制御手法に関する一検討
        石﨑雅之; 山本清志; 阿部達也; 浅野勝洋; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2020
      • PHY Performance Evaluation of IEEE 802.22-based Highly Mobile Wide Area Communication System with an SDR-based Prototype
        欧陽睿婷; 松村武; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2020
      • VHF帯周波数共用のための保護領域算出モデル
        柳瀬創平; 水谷圭一; 原田博司
        電子情報通信学会技術研究報告, Jun. 2020
      • 京都市街地環境で測定したVHF 帯遅延プロファイルを用いた機械学習による屋外位置推定
        林田尚之; 水谷圭一; 原田博司
        電子情報通信学会総合大会, Mar. 2020
      • 周波数共用型5Gシステム実現のための高精度5G NRダウンリンク信号検出手法
        横山 梨一; 水谷 圭一; 松村 武; 原田 博司
        電子情報通信学会技術研究報告, Mar. 2020
      • [招待講演]ダイナミック周波数共用実現に向けた研究開発
        山崎 浩輔; 林 高広; 天野 良晃; 岸 洋司; 藤井 威生; 安達 宏一; 原田 博司; 水谷 圭一; 高田 潤一; 齋藤 健太郎; 不破 泰; 田久 修; 澤井 亮; 木村 亮太; 馬場 覚志; 掛札 祐範; 金本 英樹; 安永 毅
        電子情報通信学会技術研究報告, Mar. 2020, Invited
      • 医療・介護での利用を志向したIEEE 802.15.4gシステムの屋内伝送実験
        正木 弘子; 奥村 亮太; 水谷 圭一; 原田 博司
        電子情報通信学会技術研究報告, Mar. 2020
      • Position Estimation of User Equipment Using VHF-band Delay Profiles in Urban Area and Machine Learning
        Takayuki Hayashida; Keiichi MIzutani; Hiroshi Harada
        IEICE Technical Report, Mar. 2020
      • A Routing Method for Improvement of Transmission Performance in Wi-SUN FAN Network
        Rei Hirakawa; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Mar. 2020
      • Terminal Position Estimation Using Delay Profile and Machine Learning
        Keiichi Mizutani; Hiroshi Harada
        IEICE technical Report, Mar. 2020, Invited, Lead author, Corresponding author
      • A Highly Dense Frequency Hopping for High-speed Wi-SUN FAN Network
        Hidetomo Ochiai; Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Jan. 2020
      • Field Experiment of IEEE 802.15.4 Based High-Speed FSK Transmission Scheme
        Yueying Xiang; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Jan. 2020
      • Improvement of Uplink Delay for Polling-based Multi-Hop Networks with Receiver-Initiated MAC Protocols
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        Proc. IEICE 2019 Society Conference, Sep. 2019
      • Wave-shaped OFDM with Time Window for Beyond 5G
        Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proc. IEICE 2019 Society Conference, Sep. 2019
      • Dependable Downlink Route Configuration Scheme for Multi-Hop Networks Based on Receiver-Initiated MAC Protocol
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Aug. 2019
      • Universal Time-domain Windowed-OFDM for 5G New Radio
        Riichi Yokoyama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, Aug. 2019
      • Transmission Route Configuration and Access Schemes for Multi-Hop Networks based on Receiver-Initiated MAC Protocol
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Jun. 2019
      • Co-existence of Synchronous and Asynchronous Protocols for Wireless IoT Systems in 920 MHz-band
        Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Jun. 2019
      • A Channel Hopping Scheduling toward Throughput Enhancement in Wi-SUN FAN Systems
        Robby Wayong; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Jun. 2019
      • Frequency-domain ICI Cancellation for UTW-OFDM without Symbol Overlapping
        Akihito Yoshito; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, Mar. 2019
      • Filtered Time Window to Reduce Implementation Complexity of UF-OFDM Transmitter
        Yuji Mizutani; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, Mar. 2019
      • Routing Metric Calculation Schemes for Wireless Mesh Network Based on IEEE 802.15.10 L2R Protocol
        Kai Samejima; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Mar. 2019
      • Experimental Evaluation of Co-existence for Wireless Communication Systems Using 920 MHz-band
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Nov. 2018
      • An Experimental Evaluation of Optimum Resource Allocation and Automatic Routing Algorithms for Multi-hop Wide Area Wireless RAN System
        Kai Samejima; Keiichi Mizutani; Takuya Habara; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, Nov. 2018
      • A Home Area Network Integrated 920MHz-band and 2.4GHz-band Wireless Systems
        Kiyoshi Mizutani; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Nov. 2018
      • Evaluation of Dynamic-duplex Cellular System on LTE Uplink under Micro-cell Environment
        Kyoya Teramae; Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, Jun. 2018
      • Near-Field Measurement for Wideband Antenna with Multicarrier Modulation Signal
        Riichi Yokoyama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada; Masaaki Fuse; Hanako Noda
        IEICE Technical Report, Jun. 2018
      • Wi-SUN Field Area Network: Wi-SUN FUN
        Hiroshi Harada; Keiichi Mizutani
        Proceedings of IEICE General Conference 2018, Mar. 2018
      • Experimental Performance Evaluation of Multi-Hop Configuration and Transmission in Wi-SUN FAN Devices
        Thidarut Junjalearnvong; Takuya Habara; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, Feb. 2018
      • 長遅延伝搬環境に対応した改良型UF-DFT拡散OFDM方式
        水谷 侑二; 栗木 寛斗; 児玉 洋介; 水谷 圭一; 松村 武; 原田 博司
        電子情報通信学会 関西支部第22回学生会研究発表講演会 発表要旨集, Feb. 2017
      • マルチパス低遅延環境における高能率UTW-OFDM方式の窓関数
        吉戸 章人; 児玉 洋介; 栗木 寛斗; 水谷 圭一; 松村 武; 原田 博司
        電子情報通信学会 関西支部第22回学生会研究発表講演会 発表要旨集, Feb. 2017
      • Multihop relay field experiment using the VHF band broadband mobile communication system in rural area
        Kei Yanagisawa; Tasuya Abe; Yoshihiro Kawashima; Kiyoshi Yamamoto; Masayuki Takekawa; Masayuki Ishizaki; Tomohiro Nozaki; Junya Dosaka; Masahiro Asano; Kazue Kato; Hiroshi Harada; Keiichi Mizutani
        IEICE Technical Report, Jun. 2015, Last author
      • High-efficiency Sensing Methods of Primary Wireless Transmission System for Spectrum Sharing-based 5G System
        Atomu Sakai; Keiichi MIzutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 23 Jan. 2020
      • A Novel Channel Estimation and Phase Compensation Scheme for IEEE 802.22-based Mobile Communication Systems in TV White-Space
        Ruiting Ouyang; Takeshi Matsumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, May 2018
      • Multihop relay field experiment using the VHF band broadband mobile communication system
        石﨑 雅之; 柳澤 慶; 阿部 達也; 山本 清志; 池田 克則; 髙橋 勇佑; 富樫 竜太郎; 堂坂 淳也; 日向野 貴光; 浅野 勝洋; 加藤 数衞; 原田 博司; 松村 武; 水谷 圭一; 羽原 拓哉
        IEICE Technical Report, 28 Feb. 2018
      • Optimum Resource Allocation and Automatic Routing Algorithms for Multi-hop Wide Area Wireless RAN Systems
        Takuya Habara; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 28 Feb. 2018
      • Evaluation of Dynamic-duplex Cellular System on LTE Downlink under Macro-cell Environment
        Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 28 Feb. 2018
      • Evaluation of Dynamic-duplex Cellular System on LTE Downlink under Micro-cell Environment
        Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 28 Feb. 2018
      • Analysis of CSL Low Power MAC Protocol for Wireless Smart Metering Networks
        Kai Samejima; Ryota Okumura; Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 28 Feb. 2018
      • Field Experiment of IEEE 802.15.4g-based System in Open Space for Water Smart Metering Systems
        Ryota Okumura; Takuya Habara; Kai Samejima; Akira Dan; Kiyoshi Mizutani; Keiichi MIzutani; Hiroshi Harada; Takuya Shiba
        IEICE Technical Report, 18 Dec. 2017
      • Feasibility Study of JUTA Profile for Wi-SUN Compliant F-RIT Protocol
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 13 Nov. 2017
      • Field Experiment in Office Building Environment of IEEE 802.15.10 L2R Protocol-based Wireless Smart Utility Network
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 13 Nov. 2017
      • A Dynamic Routing Protocol Supporting Mobile Nodes in Wi-SUN FAN Systems
        Junjalearnvong Thidarut; Takuya Habara; Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 21 Aug. 2017
      • [Invited Talk] UTW-OFDM for the 5G Systems
        Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 21 Aug. 2017, Invited, Lead author, Corresponding author
      • A UTW-DFTs-OFDM without Symbol Overlapping for Short Delay Multi-Path Environment
        Naoki Izumi; Yosuke KodamalHiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 19 Jul. 2017
      • Channel and CFO Estimation Scheme for TV White-space Wide Area Mobile Communication Systems based on IEEE 802.22
        Takeshi Matsumura; Hiroki Ukeno; Ruiting Ouyang; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 19 Jul. 2017
      • Propagation Loss Model in Short Range LoS Environment for TV White Space Systems using Low Antenna Height Base Station
        菅 智茂; 沢田 浩和; 水谷 圭一; 石津 健太郎; 村上 誉; 原田 博司; 高田 潤一
        映像情報メディア学会誌 = The journal of the Institute of Image Information and Television Engineers, Jul. 2017
      • Feasibility Study of IEEE 802.15.10 L2R Protocol for Wireless Smart Utility Networks
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 12 Jun. 2017
      • A UTW-OFDM without Symbol Overlapping for Short-delay Multipath Environment
        Akihito Yoshito; Yosuke Kodama; Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 12 Jun. 2017
      • An Experimental Evaluation of UTW-OFDM on LTE Downlink System for 5G
        Keiichi Mizutani; Akihito Yoshito; Hiroto Kuriki; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 25 May 2017, Lead author, Corresponding author
      • 5th Generation M2M/IoT Wireless Network for Ultra-Big Data Creation
        Hiroshi Harada; Keiichi Mizutani; Takeshi Matsumura
        IEICE Technical Report, 25 May 2017
      • Time-domain Equalization Scheme for Subcarrier Interval Compressed FDM
        Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 01 Mar. 2017
      • Many-to-one Transmission Characteristics of F-RIT Low Power MAC Protocol for Wireless Smart Utility Networks
        Ryota Okumura; Jun Fujiwara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 01 Mar. 2017
      • A Load Balancing Routing Algorithm for IEEE 802.15.10 L2R Based on Received Signal Weakness
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 01 Mar. 2017
      • TD-LTE in VHF Band for Large Coverage Broadband Systems
        Keiichi Mizutani; Hiroto Kuriki; Yosuke Kodama; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 01 Mar. 2017, Lead author, Corresponding author
      • UF-DFT spread OFDM scheme for Long Delay Multi-path Environment
        Yuji Mizutani; Hiroto Kuriki; Yosuke Kodama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 01 Mar. 2017
      • High-efficiency UTW-OFDM for Short Delay Multi-path Environment
        Akihito Yoshito; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proceedings of IEICE 2017 General Conference, Mar. 2017
      • High-efficiency UTW-SC-FDE for Short Delay Multi-path Environment
        Naoki Izumi; Yosuke Kodama; Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        Proceedings of the 22nd Student Convention of Kansai-Section of the Institute of Electronics, Information and Communication Engineers, Japan, Feb. 2017
      • Universal Time-domain Windowed Single Carrier Frequency-domain Equalization
        Yosuke Kodama; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
        IEICE Technical Report, 21 Dec. 2016
      • High-efficient Diversity Reception Scheme for IEEE 802.15.4g-based Systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 19 Dec. 2016
      • Implementation and Experimental Evaluation of F-RIT Low Power MAC Protocol for Wireless Smart Utility Networks : Improvement of Transmission Characteristics under High Traffic Environment
        Ryota Okumura; Jun Fujiwara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 19 Dec. 2016
      • [Requested Talk] Wave-shaped OFDM for 5G mobile communication systems
        Keiichi Mizutani; Takeshi Matsumura; HIroshi Harada
        IEICE Technical Report, 20 Oct. 2016, Invited, Lead author, Corresponding author
      • Implementation and Experimental Evaluation of F-RIT Low Power MAC Protocol for Wireless Smart Utility Networks : Bidirectional Transmission Characteristics under Interference Environments
        Ryota Okumura; Jun Fujiwara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 17 Oct. 2016
      • Anti-multipath Transmission Schemes to UF-OFDM in Long Delay Spread Channel
        Hiroto Kuriki; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 22 Jun. 2016
      • Transmission Characteristics of IEEE 802.15.4g Based Device-to-device Communication Systems in Smart Water-Metering Environments
        Takuya Habara; Ryota Okumura; Kentaro Obata; Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada; Takuya Shiba
        IEICE Technical Report, 13 Jun. 2016
      • Field Experiment of IEEE 802.15.4g Based System for Water Smart Metering Systems
        Ryota Okumura; Takuya Habara; Kentaro Obata; Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada; Takuya Shiba
        IEICE Technical Report, 19 May 2016
      • Requested Talk : Wide-area Wi-SUN System for IoT
        Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 16 May 2016, Invited, Lead author
      • A Load Balancing Algorithm for Layer 2 Routing based Wireless Smart Utility Network
        Takuya Habara; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 12 May 2016
      • Evaluation of LTE Based UTW-OFDM Waveform
        Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Reprot, 02 Mar. 2016, Lead author, Corresponding author
      • Experimental Evaluation of ARIB STD-T103 VHF Broadband Mobile Communication Systems
        Kiminobu Makino; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • UTW-OFDM Based White Space WLAN Systems
        Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Reprot, 02 Mar. 2016, Lead author, Corresponding author
      • Development of IEEE 802.15.4g Compliant Software Receiver for Multi-vender Wireless Smart Utility Networks
        Kentaro Obata; Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • Receiver design for IEEE 802.22 based TV white space mobile communication systems
        Hiroki Ueno; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • Multi-channel Multi-waveform Operational Base Station Platform for 5th Generation Mobile Communication Systems
        Hiroshi Harada; Keiichi Mizutani
        IEICE Technical Reprot, 02 Mar. 2016
      • A broadcast protocol for IEEE 802.15.4e RIT based Wireless smart utility networks
        Ryota Okumura; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • FFT based High-efficient Receiver for FSK Packet Transmission Systems
        Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • Field Experiment of IEEE 802.15.4g Based System with Forward Error Correction
        Yuuki Matsumura; Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 02 Mar. 2016
      • Enhanced UF-OFDM for Large Delay Spread Channel
        Kuriki Hiroto; Mizutani Keiichi; Harada Hiroshi
        Proceedings of the IEICE General Conference, 01 Mar. 2016
      • Evaluation of windowing functions for UTW-OFDM
        Mizutani Keiichi; Harada Hiroshi
        Proceedings of the IEICE General Conference, 01 Mar. 2016
      • A Low-power-consumed Load Balancing Algorithm for Hierarchical Mesh Tree Networks
        Habara Takuya; Mizutani Keiichi; Harada Hiroshi
        Proceedings of the IEICE General Conference, 01 Mar. 2016
      • Experimental Evaluations of Carrier Frequency Offset Estimation Scheme for IEEE 802.15.4g Based Systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Reprot, 21 Dec. 2015
      • Universal-Windowed Orthogonal Frequency Division Multiplexing
        Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 21 Dec. 2015, Lead author, Corresponding author
      • <大学の研究・動向>第5世代ブロードバンド移動通信システムに関する研究
        原田 博司; 村田 英一; 水谷 圭一
        Cue : 京都大学電気関係教室技術情報誌, Sep. 2015
      • Field Experiment of the IEEE 802.15.4g Based System in the Tea Plantation
        Mochizuki Kentaro; Obata Kentaro; Mizutani Keiichi; Harada Hiroshi
        Proceedings of the Society Conference of IEICE, 25 Aug. 2015
      • Field Experiment of IEEE 802.15.4g Based System
        Kentaro Mochizuki; Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 24 Aug. 2015
      • Symbol Synchronization Scheme for Wide Area M2M Wireless Communication Systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 24 Aug. 2015
      • Performance Evaluation of ARIB STD-T103 VHF Broadband Mobile Communication Systems
        Kiminobu Makino; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 24 Jun. 2015
      • Carrier Frequency Offset Estimation Scheme for Wide Area M2M Wireless Communication Systems
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 15 Jun. 2015
      • Area Expansion Schemes for IEEE 802.15.4g based Systems
        Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 15 Jun. 2015
      • Development of path loss and throughput estimation models using IEEE 802.11af Prototypes
        Hirokazu Sawada; Keiichi Mizutani; Kentaro Ishizu; Takeshi Matsumura; Ha Nguyen Tran; Homare Murakami; Fumihide Kojima; Hiroshi Harada
        IEICE Technical Report, 15 Jun. 2015
      • Prototype of IEEE 802.11af-based High Power Communication Devices and Field Experiment in London
        Takeshi Matsumura; Kentaro Ishizu; Keiichi Mizutani; Homare Murakami; Fumihide Kojima; Hiroshi Harada
        IEICE Technical Report, 28 May 2015
      • Field experiments of VHF-band broadband mobile communication system in rural area
        Hiroshi Harada; Keiichi Mizutani; Masayuki Takekawa; Kei Yanagisawa
        IEICE Technical Report, 21 May 2015
      • Receiver design for VHF broadband mobile communication systems
        Kiminobu Makino; Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 04 Mar. 2015
      • IEEE 802.15.4g based wide area mobile Wi-SUN communication systems
        Hiroshi Harada; Keiichi Mizutani; Kentaro Mochizuki; Kentaro Obata
        IEICE Technical Report, 04 Mar. 2015
      • Carrier Frequency Offset Estimation Scheme for IEEE 802.15.4g System in 920 MHz Band
        Kentaro Obata; Keiichi Mizutani; Hiroshi Harada
        Proceedings of the IEICE General Conference, 24 Feb. 2015
      • Frame Synchronization Scheme for Wide Area M2M Wireless Communication System
        Tatsuro Wada; Keiichi Mizutani; Hiroshi Harada
        Proceedings of the IEICE General Conference, 24 Feb. 2015
      • Adaptive Decode Scheme for IEEE 802.15.4g Radio Communication System
        Kentaro Mochizuki; Keiichi Mizutani; Hiroshi Harada
        Proceedings of the IEICE General Conference, 24 Feb. 2015
      • Field Experiment in U.K. TV White-spaces with IEEE802.11af-based Communication System
        Takeshi Matsumura; Kentaro Ishizu; Tran Ha Nguyen; Keiichi Mizutani; Homare Murakami; Fumihide Kojima; Hiroyuki Yano; Hiroshi Harada
        Proceedings of the IEICE General Conference, 24 Feb. 2015
      • A Broadband Mobile Communication Prototype in VHF Band
        Hiroshi Harada; Keiichi Mizutani
        IEICE Technical report, 22 Jan. 2015
      • Overview of IEEE 802.11af Wireless Local Area Network Systems Operating in TV White Space
        Keiichi Mizutani; Hiroshi Harada
        SYSTEMS, CONTROL AND INFORMATION, 2015, Peer-reviewed, Lead author
      • Resource Allocation and Cell Association Algorithm for Inter-Operator Spectrum and Infrastructure Sharing in Heterogeneous Network
        Kei Inage; Keiichi Mizutani; Homare Murakami; Kentaro Ishizu; Fumihide Kojima
        IEICE Technical Report, 12 Nov. 2014
      • Field Experiments in the White Space Pilot Program Organized by U.K. Ofcom
        Kentaro Ishizu; Ha Nguyen Tran; Takeshi Matsumura; Keiichi Mizutani; Kazuo Ibuka; Homare Murakami; Fumihide Kojima; Hiroshi Harada
        Proccesings of International Workshop on Smart Wireless Communications 2015, Oct. 2014
      • A study on a spectrum sharing technique "white space LTE" and its future deployment
        Homare Murakami; Kentaro Ishizu; Kazuo Ibuka; Takeshi Matsumura; Keiichi Mizutani; Kei Inage; Hiroshi Harada; Mikio Hasegawa; Hiroyuki Morikawa
        Proceedings of the Society Conference of IEICE, 09 Sep. 2014
      • Estimation of Building Penetration Loss Coefficient in UHF Band
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada
        Proceedings of the Society Conference of IEICE, 09 Sep. 2014
      • Building Penetration Loss Measurements for TVWS Systems
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada
        IEICE Technical Report, 18 Aug. 2014
      • Study of Propagation Loss Model for Short Range Communications in TV White Space Band Using Low Base Station Antenna Height
        Tomoshige Kan; Hirokazu Sawada; Keiichi Mizutani; Chunyi Song; Kentaro Ishizu; Homare Murakami; Hiroshi Harada; Jun-ichi Takada
        IEICE Technical Report, 16 Jun. 2014
      • Research and Development of IEEE 802.11af TV White Space WLAN Systems
        Keiichi Mizutani
        Proc. of NICT-VTT Joint Workshop, Jun. 2014, Lead author
      • Field Experiments in TV white space (3) : Radio Propagation Characteristics Evaluation
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada; Keigo Hasegawa; Kei Yanagisawa; Masahiro Asano
        Proceedings of the IEICE General Conference, 04 Mar. 2014
      • Field Experiments in TV White Space (2) : Heterogeneous Wireless Multi-hop Networking
        Kentaro Ishizu; Keigo Hasegawa; Keiichi Mizutani; Hirokazu Sawada; Kei Yanagisawa; Toh Keat-Beng; Masayuki Takekawa; Seishi Sasaki; Masahiro Asano; Homare Murakami; Hiroshi Harada
        Proceedings of the IEICE General Conference, 04 Mar. 2014
      • Field Experiments in TV White Space (1) : Experiments on Long-range Radio Transfer
        Keigo Hasegawa; Kentaro Ishizu; Kei Yanagisawa; Toh Keat-Beng; Masayuki Takekawa; Hirokazu Sawada; Keiichi Mizutani; Seishi Sasaki; MasahiroAsano; Homare Murakami; Hiroshi Harada
        Proceedings of the IEICE General Conference, 04 Mar. 2014
      • Research and Development of IEEE 802.11af System Implementation
        Keiichi Mizutani; Takeshi Matsumura; Kentaro Ishizu; Zhou Lan; Homare Murakami; Hiroshi Harada
        IEICE Technical Report, 03 Mar. 2014, Invited, Lead author
      • Field Experiment of Long-distance Broadband Communications in TV White Space
        Kentaro Ishizu; Keigo Hasegawa; Keiichi Mizutani; Hirokazu Sawada; Kei Yanagisawa; Toh Keatbeng; Seishi Sasaki; Masahiro Asano; Homare Murakami; Hiroshi Harada
        IEICE Technical Report, 03 Mar. 2014
      • A Study on Propagation Loss Model for TV White Space Systems
        Hirokazu Sawada; Tomoshige Kan; Keiichi Mizutani; Kentaro Ishizu; Homare Murakami; Hiroshi Harada
        IEICE Technical Report, 03 Mar. 2014
      • A study of optimum resource utilization on FDD/TDD White Space LTE System
        Homare Murakami; Kentaro Ishizu; Kazuo Ibuka; Takeshi Matsumura; Keiichi Mizutani; Hirokazu Sawada; Hiroshi Harada; Mikio Hasegawa; Hiroyuki Morikawa
        IEICE Technical Report, 03 Mar. 2014
      • Dynamic Spectrum Access Network with Wireless Clouds toward 5G Mobile Communication Systems
        Hiroshi Harada; Homare Murakami; Kentaro Ishizu; Stanislav Filin; Zhou Lan; Masayuki Oodo; Fumihide Kojima; Chang-Woo Pyo; Keiichi Mizutani; Takeshi Matsumura; Kazuo Ibuka
        IEICE Technical Report, 23 Jan. 2014
      • Development and Standardization Activities of White Space Communication Systems
        Hiroshi Harada; Homare Murakami; Kentaro Ishizu; Stanislav Filin; Zhou Lan; Fumihide Kojima; Chang-Woo Pyo; Keiichi Mizutani; Takeshi Matsumura; Kazuo Ibuka
        IEICE Technical Report, 18 Dec. 2013
      • TV放送周波数帯の未利用部分で無線LANサービスを実現する IEEE 802.11afのあらましとそれを支える技術 (特集 現行システムを復習しIEEE 802.11acなどの新技術に迫る! 今さら聞けない無線LANのABC) -- (無線LANの最新テクノロジ)
        水谷 圭一; 藍 洲; 原田 博司
        RFワールド : 無線と高周波の技術解説マガジン, Nov. 2013
      • White Space Communication Network with IEEE 802.11af/IEEE 802.22 Capable of Primary User Protection and Secondary User Coexistence
        Kentaro Ishizu; Keigo Hasegawa; Masayuki Takekawa; Keiichi Mizutani; Zhou Lan; Ha Nguyen Tran; Stanislav Filin; Takeshi Matsumura; Kei Yanagisawa; Keatbeng Toh; Homare Murakami; Seishi Sasaki; Masahiro Asano; Hiroshi Harada
        IEICE Technical Report, 24 Oct. 2013
      • Adaptive Time-domain Windowing and Transmit Power Control for Wireless Communication Systems Operating on TV White Spaces
        Keiichi Mizutani; Hiroshi Harada
        IEICE Technical Report, 24 Oct. 2013, Lead author
      • Prototype Hardware of IEEE 802.11af/D5.0 for Wireless LAN Systems Operating on TV White Spaces
        Keiichi Mizutani; Takeshi Matsumura; Kentaro Ishizu; Zhou Lan; Homare Murakami; Hiroshi Harada
        IEICE Technical Report, 24 Oct. 2013, Lead author
      • Researches and Developments of TV White Space Communication Technologies in NICT
        Homare Murakami; Kentaro Ishizu; Chunyi Song; Stanislav Filin; Zhou Lan; Keiichi Mizutani; Fumihide Kojima; Hiroshi Harada
        Proceedings of the Society Conference of IEICE, 03 Sep. 2013
      • Experimental Evaluation of Wireless LAN Inhastmcture in TV White Space
        Kentaro Ishizu; Keiichi Mizutani; Homare Murakami; Hiroshi Harada
        Proceedings of the IEICE General Conference, 05 Mar. 2013
      • A Study of Time-domain Windowing for Out-of-band Emission Suppression of OFDM based TVWS Systems
        Keiichi Mizutani; Ryuhei Funada; Hiroshi Harada
        IEICE Technical Report, 27 Feb. 2013, Lead author
      • Multi-channel Wireless LAN with Variable Bandwidth in TV White Space
        Keiichi Mizutani; Ryuhei Funada; Zhou Lan; Hiroshi Harada
        IEICE Technical Report, 23 Aug. 2012, Lead author
      • [招待講演] IEEE 802.11af標準化の概要
        藍 洲; 水谷 圭一; Gabriel Villardi; Ha-Nguyen Tran; 原田 博司
        電子情報通信学会 短距離無線通信研究会(2種研) 発表予稿集, Aug. 2012, Invited
      • Experiment on MIMO Two-way Relaying using Transmit Beamforming
        Vutha Va; Keiichi Mizutani; Yutaro Kida; Kei Sakaguchi; Kiyomichi Araki; Takehiro Miyamoto
        IEICE Technical Report, 29 Feb. 2012
      • 海洋・水中音響 マルチパス測定型水中音響多重通信とドップラーシフト補償 : 水中での安定したデータ伝送を目指して
        海老原 格; 水谷 圭一
        超音波techno, Nov. 2011
      • Experimental Study on Doppler Shift Compensation for Underwater Acoustic Communication Using Orthogonal Signal Division Multiplexing
        Tadashi Ebihara; Keiichi Mizutani
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2011
      • Network Synchronization for TDD-OFDM Two-way Multi-hop Relay Networks withMIMO Network Coding
        Keiichi Mizutani; Tran Khanh Gia; Kei Sakaguchi; Kiyomichi Araki
        Proceedings of the Society Conference of IEICE, 30 Aug. 2011, Lead author
      • Time Synchronized MIMO Two-way Relay Network Enabling Dynamic Node Participation
        Yutaro Kida; Keiichi Mizutani; Tran Khanh Gia; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 21 Jul. 2011
      • 950MHz帯無線電力伝送における定在波問題対策技術
        前原 大樹; 水谷 圭一; 阪口 啓; 荒木 純道; 白土 正; 古川 実; 宮本 健宏; 根岸 美紀
        電子情報通信学会総合大会講演論文集, 28 Feb. 2011
      • Node extension typed synchronization method for MIMO multi-hop relay network
        Yutaro Kida; Keiichi Mizutani; Tran Khanh Gia; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 23 Feb. 2011
      • MIMO Two-Way Multi-hop Relay Networks
        Kei Sakaguchi; Keiichi Mizutani; Rindranirina Ramamonjison; Tran Khanh Gia
        IEICE Technical Report, 09 Dec. 2010
      • Doppler Shift Compensation for Underwater Acoustic Communication Using Orthogonal Signal Division Multiplexing
        Tadashi Ebihara; Keiichi Mizutani
        Proceedings of Symposium on Ultrasonic Electronics, Dec. 2010
      • Development of cognitive wireless node at 950MHz band
        Takahiro Kurosama; Keiichi Mizutani; Takuji Sasou; Noriyuki Arisaka; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 13 May 2010
      • Wireless Grid to Realize Ubiquitous Networks with Wireless Energy Supply
        Kei Sakaguchi; Ragil Ptro Wicaksono; Keiichi Mizutani; Tran Khanh Gia
        IEICE Technical Report, 24 Feb. 2010
      • Propagation Measurement of MIMO Relay Network in Strong Shadowing Indoor Environment at 5GHz Band
        Namzilp Lertwiram; Tran Khanh Gia; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 24 Feb. 2010
      • Inter-Symbol Interference with Impulse Response and its Effect for Acoustic Communication
        Tadashi Ebihara; Keiichi Mizutani; Takeshi Ohbuchi; Naoto Wakatsuki; Koichi Mizutani
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2009
      • Hardware Prototype for Two-way Multi-hop Relay Network with MIMO Network Coding
        Keiichi Mizutani; Takehiro Miyamoto; Takamichi Kanno; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, Oct. 2009, Lead author
      • Multi-channel Two-way Multi-hop Relay Network Hardware Prototype
        Keiichi Mizutani; Takehiro Miyamoto; Takamichi Kanno; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 22 Jul. 2009, Lead author
      • MIMO-OFDM Two-way Multihop Network and Network Synchronization Scheme
        Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 21 May 2009, Lead author
      • 950MHz帯におけるFFTに基づくキャリアセンス機能の設計
        尾渡 裕成; 水谷 圭一; 阪口 啓; 荒木 純道; 島田 修作
        電子情報通信学会 平成20年度東京支部学生会研究発表会, Mar. 2009
      • Phase Shift Keying Modulation with Impulse Response for Ultrasonic Communication
        Tadashi Ebihara; Keiichi Mizutani; Naoto Wakatsuki; Koichi Mizutani; Koichi Morikawa
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2008
      • Locality of Area Coverage on Acoustic Communication in Air using Differential Phase Shift Keying
        Keiichi Mizutani; Tadashi Ebihara; Naoto Wakatsuki; Koichi Mizutani
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2008, Lead author
      • Development of Cognitive MIMO Mesh Relay Node
        Keiichi Mizutani; Tran Khanh Gia; Kiyomichi Araki; Kenji Ohishi; Ken-ichi Kamada; Shusaku Shimada; Fumie Ono; Kei Sakaguchi
        Proceedings of the Society Conference of IEICE, 02 Sep. 2008, Lead author
      • Cognitive MIMO Mesh Relay Node at 950MHz Band
        Keiichi Mizutani; Tran Khanh Gia; Kiyomichi Araki; Kenji Oishi; Ken-ichi Kamada; Shusaku Shimada; Fumie Ono; Kei Sakaguchi
        IEICE Technical Report, 24 Jul. 2008, Lead author
      • Performance Comparison between Feedback and Feedback-less Method to obtain CSIT in Multi-user MIMO Precoding
        Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Report, 05 Mar. 2008, Lead author
      • DPSK Acoustic Communication in Air with Reduction of Impulse Response Influence for Low SNR Environment
        Mizutani Keiichi; Wakatsuki Naoto; Mizutani Koichi
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2007, Lead author
      • Experiment of Capacity Improvement by MIMO Relay
        Keiichi Mizutani; Khanh Tran Gia; Masashi Noda; Leng Ky; Kei Sakaguchi; Kiyomichi Araki
        Proceedings of the Society Conference of IEICE, Sep. 2007, Lead author
      • MIMO Relay Channel Measurement System and Initial Measurement Results
        Masashi Noda; Tran Khanh Gia; Ky Leng; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki
        IEICE Technical Teport, 26 Jul. 2007
      • Interlaced Neural Network for the Peak Power Reduction in OFDM
        Mizutani Keiichi; Ohta Masaya; Yamashita Katsumi
        Proceedings of the IEICE General Conference, 07 Mar. 2007, Lead author
      • PAPR Reduction of OFDM Signal by HNN and its Computational Complexity Suppression
        Keiichi Mizutani; Masaya Ohta; Yasuo Ueda; Katsumi Yamashita
        IEICE Technical Report, 26 Feb. 2007, Lead author
      • オーバーサンプリングを用いた連続時間OFDM信号のピーク電力抑圧とその計算量の削減
        水谷 圭一; 森 敦史; 太田 正哉; 山下 勝己
        電気関係学会関西支部連合大会, Nov. 2006, Lead author
      • Acoustic Communication in Air Using DBPSK with Influence by Impulse Response
        Mizutani Keiichi; Wakatsuki Naoto; Mizutani Koichi
        Proceedings of Symposium on Ultrasonic Electronics, Nov. 2006, Lead author

      Books and Other Publications

      • Opportunistic Spectrum Sharing and White Space Access: The Practical Reality (Part V, Chapter 22)
        Kentaro Ishizu; Keiichi Mizutani; Takeshi Matsumura; Ha-Nguyen Tran; Stanislav Filin; Hirokazu Sawada; Hiroshi Harada, Joint work
        WILEY, 2015, Not refereed
      • 第5章 TV放送周波数帯の未利用部分で無線LANサービスを実現するーIEEE 802.11afのあらましとそれを支える技術
        Keiichi Mizutani; Zhou Lan; Hiroshi Harada, Joint work
        CQ出版社, RFワールド, No. 24, Oct. 2013, Not refereed
      • ホワイトスペースを用いた無線LANシステムの実証実験に成功 -国際標準暫定規格 "IEEE 802.11af Draft 2.0" に世界で初めて準拠-
        Keiichi Mizutani; Zhou Lan; Hiroshi Harada, Joint work
        独立行政法人情報通信研究機構, NICT NEWS 12月号, no. 423, Dec. 2012, Not refereed
      • マルチパス測定型水中音響多重通信とドップラーシフト補償
        Tadashi Ebihara; Keiichi Mizutani, Joint work
        日本工業出版, 超音波テクノ 11・12月号, Dec. 2011, Not refereed

      Industrial Property Rights

      • US11,737,077, 特願2018-219641, Transmission Device and Transmission Method
        Keiichi Mizutani; Hiroshi Harada; Takeshi Matsumura; Yuji Mizutani
      • 特開2022-135813, 特願2021-035888, 線局位置推定装置、無線局位置推定システム及び無線局位置推定方法
        石崎雅之; 浅野勝洋; 山本清志; 原田博司; 水谷圭一
      • 特願2022-127879, 送信装置及び送信方法、受信装置及び受信方法
        水谷圭一; 原田博司; 市川遊
      • 特開2021-164023, 特願2020-062107, 通信装置および通信方法
        水谷 圭一; 原田 博司; 松村 武; リュウ ショシ
      • 特許7463630, 特開2021-111874, 特願2020-002724, 信号検出装置
        水谷 圭一; 原田 博司; 松村 武; 酒井 愛富
      • 特許7167392, 特開2020-88576, 特願2018-219641, 送信装置および送信方法
        水谷 圭一; 原田 博司; 松村 武; 水谷 侑二
      • 特許7152636, 特開2019-117969, 特願2017-249829, 通信装置及び通信方式
        水谷 圭一; 原田 博司; 松村 武; 羽原 拓哉
      • US 11,405,811, JP, 2018-005230, Communication Apparatus and Communication Method
        Naoki Kusashima; Ryota Kimura; Kazuyuki Shimezawa; Ryo Sawai; Hiroto Kuriki; Keiichi Mizutani; Takeshi Matsumura; Hiroshi Harada
      • 特許7062437, 特願2017-249354, 無線通信システムおよび無線通信方法
        石崎 雅之; 阿部 達也; 柳澤 慶; 原田 博司; 松村 武; 水谷 圭一
      • US 11,277,749, JP, 2017-249829, Communication Device and Communication System
        Keiichi Mizutani; Hiroshi Harada; Takeshi Matsumura; Takuya Habara
      • 特許7033008, 特願2018-105113, 近傍界測定装置及び近傍界測定方法
        布施 匡章; 野田 華子; 原田 博司; 水谷 圭一; 横山 梨一
      • 特許6935634, 特願2016-241637, 送信装置,送信方法,受信装置および受信方法
        水谷 圭一; 原田 博司; 松村 武; 児玉 洋介
      • 特許6892995, 特願2016-239288, 無線通信システム,無線機,および,プログラム
        藤原 純; 川田 拓也; 坂元 賢太郎; 土屋 創太; 原田 博司; 水谷 圭一; 奥村 亮太
      • US 10,785,061, JP, 2015-245290, Propagation Channel Estimation Method
        Hiroshi Harada; Keiichi Mizutani; Kiminobu Makino
      • US 10,742,454, JP, 2016-241637, Transmission Device, Transmission Method, Reception Device, and Reception Method
        Keiichi Mizutani; Hiroshi Harada; Takeshi Matsumura; Yosuke Kodama
      • US 10,581,546, JP, 2016-002695, Transmitter, Transmission Method, and Receiver Based on Time-domain Windows
        Keiichi Mizutani; Hiroshi Harada
      • 特許6632364, 特開2017-108333, 特願2015-245290, 伝搬路推定方法
        原田 博司; 水谷 圭一; 牧野 仁宣
      • 特許6630559, 特開2017-108333, 特願2015-242046, 無線通信システム
        藤原 純; 川田 拓也; 坂元 賢太郎; 土屋 創太; 原田 博司; 水谷 圭一
      • 特許6619234, 特開2017-123604, 特願2016-002695, 送信装置,送信方法および受信装置
        水谷 圭一; 原田 博司
      • 特許6304653, 特開2015-207836, 特願2014-085936, 与干渉推定システム,無線装置
        沢田 浩和; 菅 智茂; 宋 春毅; 水谷 圭一; 石津 健太郎; 村上 誉; 原田 博司
      • 特許6296604, 特開2015-207834, 特願2014-085913, OFDM信号送信装置
        水谷 圭一; 原田 博司
      • 特許6179883, 特開2014-099769, 特願2012-250593, マルチホップ無線通信システム
        表 昌佑; 張 欣; 宋 春毅; 水谷 圭一; 船田 龍平; 大堂 雅之; 原田 博司
      • 特許6164630, 特開2014-135647, 特願2013-002774, 無線送信機,無線受信機,無線送信方法および無線受信方法
        船田 龍平; 水谷 圭一; 原田 博司
      • 特許6074795, 特開2014-099768, 特願2012-250588, マルチホップ無線通信システム
        表 昌佑; 張 欣; 宋 春毅; 水谷 圭一; 船田 龍平; 大堂 雅之; 原田 博司
      • 特許6061296, 特開2014-165546, 特願2013-032579, 無線送信機,無線受信機,無線通信システムおよび無線通信方法
        水谷 圭一; 藍 洲; 船田 龍平; 原田 博司
      • US 9,450,800, JP, 2013-002774, Wireless Transmitter, Wireless Receiver, Wireless Transmission Method, and Wireless Reception Method
        Ryuhei Funada; Keiichi Mizutani; Hiroshi Harada

      Awards

      • 08 Mar. 2021
        IEICE Technical Committee on Smart Radio, Best Paper Award
      • 02 Mar. 2018
        IEICE Technical Committee on Smart Radio, Special Technical Award
      • 20 Dec. 2017
        WPMC, WPMC2017 Best Paper Award
      • 12 Jun. 2017
        IEEE LANMAN, IEEE LANMAN2017 Best Paper Award
      • 19 Mar. 2017
        IEEE WCNC 2017 International Workshop on Smart Spectrum, IWSS 2017 Best Paper Award
      • 22 Aug. 2016
        IEICE Technical Committee on Short Range Wireless Communications, IEICE SRW Young Researcher's Award
      • 15 Apr. 2015
        National Institute of Information and Communications Technology, 成績優秀表彰 優秀賞
      • 10 Sep. 2014
        WPMC2014, WPMC2014 Best Paper Award
      • 22 May 2014
        IEICE Technical Committee on Smart Radio, 技術特別賞
      • 27 Mar. 2014
        IEEE Standards Association, 功労感謝状
      • 11 Dec. 2013
        National Institute of Information and Communications Technology, 2013年合同研究交流会ポスター優秀賞
      • 17 Apr. 2013
        National Institute of Information and Communications Technology, 成績優秀表彰 優秀賞
      • 20 May 2010
        IEICE Technical Committee on Software Radio, 論文賞
      • 18 May 2010
        IEEE VTS Japan Chapter, IEEE VTS Japan 2010 Young Researcher's Encouragement Award
      • 28 May 2009
        IEICE Technical Committee on Software Radio, 技術特別賞
      • 13 Sep. 2017
        電子情報通信学会通信ソサイエティ, 活動功労賞

      External funds: Kakenhi

      • A signal processing technology for TVWS-based wireless communication systems
        Grant-in-Aid for Young Scientists (B)
        Kyoto University
        Keiichi Mizutani
        From 01 Apr. 2015, To 31 Mar. 2018, Project Closed
        OFDM;帯域外輻射抑圧;実機評価;帯域外輻射;実装;ホワイトスペース;5G;時間軸窓;周波数利用効率;UTW-OFDM;帯域外輻射電力抑圧
      • 第5世代移動通信システムにむけたVHF帯広域広帯域移動通信技術に関する研究
        Grant-in-Aid for Scientific Research (A)
        Kyoto University
        原田 博司
        From 01 Apr. 2015, To 31 Mar. 2018, Declined
        ブロードバンド;VHF;第5世代移動通信システム;実証試験

      External funds: others

      • ホワイトスペースにおける新たなブロードバンドアクセスの実現に向けた周波数高度利用技術の研究開発
        総務省(電波利用料財源)電波資源拡大のための研究開発の委託業務
        From Apr. 2012, To Mar. 2014
        原田博司
      • 複数周波数帯の動的利用による周波数有効利用技術の研究開発
        総務省(電波利用料財源)電波資源拡大のための研究開発の委託業務
        From 2012, To Sep. 2014
        原田博司
      list
        Last Updated :2025/05/02

        Education

        Teaching subject(s)

        • From 01 Apr. 2024, To 31 Mar. 2025
          Information and Communication Engineering
          6115, Spring, Faculty of Engineering, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Information Transmission
          6033, Fall, Faculty of Engineering, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Modulation Theory in Electrical Communication
          6032, Spring, Faculty of Engineering, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Advanced Practice of Electrical and Electronic Engineering
          6202, Fall, Faculty of Engineering, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Digital Communications Engineering
          3622, Spring, Graduate School of Informatics, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Advanced Practice of Electrical and Electronic Engineering
          6202, Fall, Faculty of Engineering, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Information and Communication Engineering
          6115, Spring, Faculty of Engineering, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Information Transmission
          6033, Fall, Faculty of Engineering, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Modulation Theory in Electrical Communication
          6032, Spring, Faculty of Engineering, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Digital Communications Engineering
          3622, Spring, Graduate School of Informatics, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Digital Communications Engineering
          3622, Spring, Graduate School of Informatics, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Advanced Practice of Electrical and Electronic Engineering
          6202, Fall, Faculty of Engineering, 2
        • From 01 Apr. 2015, To 30 Sep. 2015
          Electrical and Electronic Engineering Advanced Practice A
          Spring, 工学部
        • From Apr. 2017, To Mar. 2018
          Practice of Electrical and Electronic Engineering
          Spring, 工学部
        • From Apr. 2018, To Mar. 2019
          Practice of Electrical and Electronic Engineering
          Spring, 工学部
        • From Apr. 2019, To Mar. 2020
          Practice of Electrical and Electronic Engineering
          Spring, 工学部
        • From Apr. 2020, To Mar. 2021
          Practice of Electrical and Electronic Engineering
          Spring, 工学部

        Student achievements: Awards

        • 研究奨励賞
          鮫島渓, 電子情報通信学会短距離無線通信研究専門委員会, 08 Jun. 2018
        • 優秀学生賞
          栗木寛斗, 電子情報通信学会短距離無線通信研究専門委員会, 08 Jun. 2018
        • 優秀ポスター賞
          羽原拓哉, 電子情報通信学会短距離無線通信研究専門委員会, 08 Jun. 2018
        • IEEE LANMAN2017 Best Paper Award
          上野宏樹, IEEE LANMAN 2017, 12 Jun. 2017
        • 研究奨励賞
          羽原拓哉, 電子情報通信学会短距離無線通信研究専門委員会, 12 Jun. 2017
        • 研究奨励賞
          小幡健太郎, 電子情報通信学会短距離無線通信研究専門委員会, 12 Jun. 2017
        • 研究助成(海外渡航)
          奥村亮太, 公益財団法人村田学術振興財団, 05 Jun. 2017
        • IEEE VTS Tokyo Chapter 2017 Young Researcher's Encouragement Award
          奥村亮太, IEEE VTS Tokyo Chapter, 05 Jun. 2017
        • IEEE VTS Tokyo Chapter 2017 Young Researcher's Encouragement Award
          栗木寛斗, IEEE VTS Tokyo Chapter, 05 Jun. 2017
        • 国際会議論文発表者助成事業(カテゴリーI:論文発表形式会議助成)
          栗木寛斗, 公益財団法人NEC C&C財団, 14 Apr. 2017
        • IWSS 2017 Best Paper Award
          上野宏樹, IEEE WCNC 2017 International Workshop on Smart Spectrum, 19 Mar. 2017
        • 国際研究集会出席旅費(渡航助成)
          望月健太郎, 公益財団法人電気電子情報学術振興財団, 30 Nov. 2016
        • 研究奨励賞
          望月健太郎, 電子情報通信学会短距離無線通信研究専門委員会, 22 Aug. 2016
        • 優秀学生賞
          奥村亮太, 電子情報通信学会短距離無線通信研究専門委員会, 22 Aug. 2016
        • 優秀学生賞
          小幡健太郎, 電子情報通信学会短距離無線通信研究専門委員会, 22 Aug. 2016
        • 国際会議論文発表者助成事業(カテゴリーI:論文発表形式会議助成)
          小幡健太郎, 公益財団法人NEC C&C財団, 15 Apr. 2016

        Part-time lecturer

        • From 01 Jun. 2024, To 30 Sep. 2024
          電気情報特別講義Ⅱ
          鳥取大学, 工学部
        list
          Last Updated :2025/05/02

          Administration

          Faculty management (title, position)

          • From 01 Apr. 2017, To 31 Mar. 2018
            情報セキュリティWG委員
          • From 01 Apr. 2017, To 31 Mar. 2018
            システム運用WG委員
          • From 01 Apr. 2018, To 31 Mar. 2019
            情報セキュリティWG委員
          • From 01 Apr. 2018, To 31 Mar. 2019
            システム運用WG委員
          list
            Last Updated :2025/05/02

            Academic, Social Contribution

            Committee Memberships

            • From 2023
              TPC Member, IEEE VTC2023-Spring
            • From 2021, To 2022
              Publication Chair, IEEE PIMRC2022
            • From 2022
              TPC Member, IEEE VTC2022-Fall
            • From 2020, To 2021
              TPC Member, IEEE CCNC2021
            • From 2019, To 2020
              TPC Member, IEEE CCNC2020
            • From 2020
              TPC Member, IEEE VTC2020-Fall
            • From 2020
              TPC Member, IEEE Globecom2020
            • From 2020
              TPC Member, WPMC2020
            • From 2018, To 2019
              TPC Member, IWSS2019
            • From 2018, To 2019
              TPC Member, IEEE CCNC2019
            • From 2017, To 2018
              TPC Member, IEEE VTC2018-Spring
            • From 2018
              TPC Member, IEEE VTC2018-Fall
            • From 2017
              TPC Member, IEEE CCNC2018
            • From 2017
              TPC Member, IEEE VTC2017-Fall
            • From 2017
              TPC Member, APWCS2017
            • From 2017
              英文論文誌B特集号(Wireless Distributed Networks for IoT Era)編集委員, 電子情報通信学会
            • From 2014, To 2015
              Local Arrangement Vice Co-chair, APCC2015
            • From 2014, To 2015
              英文論文誌B特集号(5G Radio Access Networks – Part II: Muti-RAT Heterogeneous Networks and Smart Radio Technologies)編集委員, 電子情報通信学会
            • From Jun. 2023, To Present
              専門委員長, 電子情報通信学会短距離無線通信研究専門委員会
            • From Jun. 2019, To May 2023
              Vice-chair, IEICE Technical Committee on Short Radio Wireless Communications
            • From Jun. 2017, To May 2019
              幹事, 電子情報通信学会短距離無線通信研究会
            • From Jan. 2014, To May 2019
              専門委員, 電子情報通信学会スマート無線専門研究委員会
            • From Jun. 2015, To Jun. 2017
              幹事補佐, 電子情報通信学会短距離無線通信研究会
            • From Apr. 2013, To Sep. 2014
              委員, ARIB無線LANシステム開発部会
            • From Apr. 2008, To Mar. 2012
              実行委員, IEEE Tokyo Young Researchers Workshop
            • From Apr. 2009, To Mar. 2010
              実行委員長, The 6th IEEE Tokyo Young Researchers Workshop
            • From Apr. 2008, To Mar. 2009
              副委員長, The 5th IEEE Tokyo Young Researchers Workshop

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