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



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
    -
    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

  • 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

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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

  • Design of Sparse Arrays via Deep Learning for Enhanced DOA Estimation

    Steven Wandale, Koichi Ichige

    EURASIP Journal of Advances in Signal Processing   2021 ( 1 )   17-1 - 17-14   2021.4  [Reviewed]

    DOI

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

  • Optimization and Hole Interpolation of 2-D Sparse Arrays for Accurate Direction-of-Arrival Estimation

    NAKAMURA Shogo, IWAZAKI Sho, ICHIGE Koichi

    IEICE Transactions on Communications   104 ( 4 )   401 - 409   2021.4  [Reviewed]

    DOI CiNii

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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>This paper presents a method to optimize 2-D sparse array configurations along with a technique to interpolate holes to accurately estimate the direction of arrival (DOA). Conventional 2-D sparse arrays are often defined using a closed-form representation and have the property that they can create hole-free difference co-arrays that can estimate DOAs of incident signals that outnumber the physical elements. However, this property restricts the array configuration to a limited structure and results in a significant mutual coupling effect between consecutive sensors. In this paper, we introduce an optimization-based method for designing 2-D sparse arrays that enhances flexibility of array configuration as well as DOA estimation accuracy. We also propose a method to interpolate holes in 2-D co-arrays by nuclear norm minimization (NNM) that permits holes and to extend array aperture to further enhance DOA estimation accuracy. The performance of the proposed optimum arrays is evaluated through numerical examples.</p>

    Other Link: https://ci.nii.ac.jp/naid/130008014020

  • 周波数帯域分割を用いたCNNによるピアノ音の多重音解析

    戸田 大貴, 市毛 弘一

    電子情報通信学会論文誌 A   J104-A ( 4 )   110 - 113   2021.4  [Reviewed]

    DOI

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

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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

    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)  (Rennes, France)  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  (San Diego, CA, USA)  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

  • 2021   回路解析Ⅰ

    College of Engineering Science

  • 2021   回路解析

    College of Engineering Science

  • 2021   ディジタルメディアのしくみⅡ

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2021   ディジタルメディアのしくみⅠ

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2021   システム設計実習

    Graduate school of Engineering Science

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Committee Memberships 【 display / non-display

  • 電子情報通信学会英文論文誌A

    2019.6  編集幹事

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    Committee type:Academic society 

  • 国際会議ISAPS2020

    2017.7  論文委員会副委員長

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    Committee type:Academic society 

  • 電子情報通信学会

    2016.2 - 2017.7  論文誌EB分冊ISAP2016特集号編集委員

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    Committee type:Academic society 

  • 国際会議ISCAS2019

    2015.2  財務委員長

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    Committee type:Academic society 

  • 電子情報通信学会

    2015.1 - 2018.5  論文誌EA分冊編集委員

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    Committee type:Academic society