ICHIGE Koichi

Affiliation

Faculty of Engineering, Division of Intelligent Systems Engineering

Job Title

Professor

Date of Birth

1972

Research Fields, Keywords

Digital Signal Processing, Mobile Communication, Image Processing

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0001-7663-6919

Education 【 display / non-display

  •  
    -
    1999.3

    University of Tsukuba   Doctor Course   Completed

  •  
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    1994.3

    University of Tsukuba   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - University of Tsukuba

Campus Career 【 display / non-display

  • 2019.3
     
     

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

  • 2007.4
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    2019.2

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

  • 2003.4
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    2007.3

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

  • 2001.4
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    2003.3

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

  • 2001.3
     
     

    Duty   Yokohama National UniversitySchool of Engineering   Lecturer  

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External Career 【 display / non-display

  • 2001.9
    -
    2002.9

    Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland   Visiting Researcher  

Academic Society Affiliations 【 display / non-display

  • 1994.4
     
     
     

    The Institute of Electronics,Information and Communication Engineers

  • 1994.4
     
     
     

    IEEE

 

Books 【 display / non-display

  • 理工系のための解く! 電気回路2 -交流・基礎編-

    竹村泰司,濱上知樹,市毛弘一( Role: Joint author)

    講談社  ( ISBN:4062806015

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    Language:Japanese Book type:Scholarly book

  • 理工系のための解く! 電気回路1 -交流・基礎編-

    石井六哉,竹村泰司,濱上知樹,市毛弘一( Role: Joint author)

    講談社  ( ISBN:4061557769

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    Language:Japanese Book type:Scholarly book

Thesis for a degree 【 display / non-display

  • A Study on Improvements in Computational Efficiency of a Filter Design

    1999.3

    Doctoral Thesis   Single Work  

    DOI

  • Discrete B-spline Functions and Their Application to B-spline Decomposition and Reconstruction of Signals

    1994.3

    Master Thesis   Single Work  

Papers 【 display / non-display

  • Learning-Based Prediction Method for Radio Wave Propagation Using Images of Building Maps

    Inoue Kazuya, Ichige Koichi, Nagao Tatsuya, Hayashi Takahiro

    IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS   21 ( 1 )   124 - 128   2022.1  [Reviewed]

    DOI Web of Science

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    Language:English   Publishing type:Research paper (scientific journal)   Joint Work  

  • Adaptive Beamforming by Extension and Phase Restoration of Sparse Array Input Signal

    MORIMOTO Shinya, IWAZAKI Sho, ICHIGE Koichi

    J104-A ( 12 )   250 - 257   2021.12  [Reviewed]

    DOI CiNii Research

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers   Joint Work  

    In this paper, we propose an adaptive beamforming method for received signals from sparse array antennas and a demodulation method for virtual signals. Previously, it has been confirmed that the direction of arrival (DOA) estimation performance can be improved by using the Khatri-Rao (KR) product expansion process on the received signals of real arrays. However, when virtual signals are used in communication systems that employ digital modulation, the processing in the real array region cannot be directly adopted because of the unique properties of virtual signals. Therefore, in this paper, we propose a beamforming method for the extended virtual signal and try to improve the extended array system by recovering the phase information during the demodulation of the virtual signal. The performance of the proposed array system is evaluated by computational simulation.

  • Simulated Annealing Assisted Sparse Array Selection Utilizing Deep Learning

    Wandale Steven, Ichige Koichi

    IEEE ACCESS   9   156907 - 156914   2021.11  [Reviewed]

    DOI Web of Science

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    Language:English   Publishing type:Research paper (scientific journal)   Joint Work  

  • Optimization of Microwave Circuit Parameters by CMA-ES Method

    Kosuke Hayashi, Koichi Ichige

    IEICE Communications Express   10 ( 9 )   681 - 687   2021.5  [Reviewed]

    DOI

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 電子情報通信学会   Joint Work  

  • FMCW radar with multiple initial frequencies for robust source number estimation

    Saito Ryo, Kashiwagi Katsuhisa, Arakawa Nobuya, Hamada Shohei, Ichige Koichi

    IEICE COMMUNICATIONS EXPRESS   10 ( 9 )   698 - 703   2021.5  [Reviewed]

    DOI Web of Science CiNii Research

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 電子情報通信学会   Joint Work  

    <p>We propose a novel method to estimate source number used in Direction Of Arrival (DOA) estimator for Frequency Modulated Continuous Wave - Multiple-Input Multiple-Output (FMCW-MIMO) radar. The main principle is that the phase of the intermediate signals can be modified by the initial frequency of transmitted signals. We confirmed that our method can distinguish true and spurious sources when the number of sources is larger than the number of true sources.</p>

    Other Link: https://ci.nii.ac.jp/naid/130008082843

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Industrial Property Rights 【 display / non-display

  • 信号処理装置、信号処理システム、信号処理方法、及びプログラム

    平原大地,市毛弘一

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    Application no:2019-****  Date applied:2019.6

    Country of applicant:Domestic  

Awards 【 display / non-display

  • Best Paper Award

    2021.10   国際会議 ISCIT 組織委員会   ECG Signal Reconstruction Using FMCW Radar and Convolutional Neural Network

    Individual or group name of awards:戸田大貴(理工学府M2),安済練(理工学府M1),市毛弘一

  • Best Paper Award

    2018.11   ISPACS 2018  

    Individual or group name of awards:Yuji Araki, Koichi Ichige

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

  • スパースアレーによる拡張アレー信号処理とその高精度センシング応用

    2020.4 - 2023.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):市毛弘一

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    Grant type:Competitive

  • スパース信号表現に基づいた高速移動体追跡技術とそのスポーツ競技戦略分析への応用

    2016.4 - 2019.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):市毛弘一

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    Grant type:Competitive

  • マイクロセル環境下での3次元構造マルチアンテナシステムの開発

    2013.4 - 2016.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):市毛弘一

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    Grant type:Competitive

Presentations 【 display / non-display

  • Extended beamforming by sum and difference composite co-array for radio surveillance

    Sho Iwazaki, Koichi Ichige

    2017 IEEE Workshop on Information Forensics and Security (WIFS)  IEEE

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    Event date: 2017.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rennes, France  

    DOI: 10.1109/APUSNCURSINRSM.2017.8072623

  • Underdetermined DOA estimation in the presence of mutual coupling for sparse circular array

    Thomas Basikolo, Koichi Ichige, Hiroyuki Arai

    2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting  IEEE

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    Event date: 2017.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:San Diego, CA, USA  

    DOI: 10.1109/APUSNCURSINRSM.2017.8072623

  • Multi-sensor Indoor Target Localization Based on Multipath Exploitation

    N. Arakawa, K. Ichige

    International Conference on Indoor Positioning and Indoor Navigation 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

  • Accurate RSSI-Based Indoor Localization Using Time-Domain Path Loss Compensation

    R. Saito, K. Ichige, T. Ishihara, A. Nakazawa

    International Conference on Indoor Positioning and Indoor Navigation, no. 207 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

  • An Efficient Direction-Of-Arrival Estimation Method Based on Weighted Sparse Spectrum Fitting

    Koichi Ichige

    Signal Processing with Adaptive Sparse Structured Representations Workshop 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

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Charge of on-campus class subject 【 display / non-display

  • 2022   Wireless Communication Systems S

    Graduate school of Engineering Science

  • 2022   Wireless Communication Systems F

    Graduate school of Engineering Science

  • 2022   Programming Practice II for Electrical and Computer Engineering

    College of Engineering Science

  • 2022   Programming Practice for Electrical and Computer Engineering

    College of Engineering Science

  • 2022   Advanced electromagnetic wave design S

    Graduate school of Engineering Science

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Committee Memberships 【 display / non-display

  • 電子情報通信学会信号処理研究専門委員会

    2022.6  副委員長

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    Committee type:Academic society 

  • 電子情報通信学会英文論文誌A

    2019.6 - 2021.5  編集幹事

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    Committee type:Academic society 

  • 国際会議ISAP2020

    2017.7 - 2021.2  論文委員会副委員長

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    Committee type:Academic society 

  • 国際会議ISCAS2019

    2015.2 - 2020.5  財務委員長

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    Committee type:Academic society 

  • 電子情報通信学会英文論文誌A

    2015.1 - 2018.5  編集委員

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    Committee type:Academic society