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

  •  
    -
    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
    -
    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
    -
    2003.3

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

  • 2001.3
     
     

    Duty   Yokohama National UniversitySchool of Engineering   Lecturer  

display all >>

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

     More details

    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

     More details

    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

  • xMISC: Improved Sparse Linear Array via Maximum Inter-Element Spacing Concept

    Steven Wandale, Koichi Ichige

    IEEE Signal Processing Letters   30   1327 - 1331   2023.9  [Reviewed]

    DOI

     More details

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

  • Low-Cost Learning-Based Path Loss Estimation Using Correlation Graph CNN

    Keita IMAIZUMI, Koichi ICHIGE, Tatsuya NAGAO, Takahiro HAYASHI

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E106.A ( 8 )   1072 - 1076   2023.8  [Reviewed]

    DOI

     More details

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

  • A Deep-Learning Method for Path Loss Prediction Using Geospatial Information and Path Profiles

    Takahiro Hayashi, Koichi Ichige

    IEEE Transactions on Antennas and Propagation   71 ( 9 )   7523 - 7537   2023.7  [Reviewed]

    DOI

     More details

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

  • Depth Estimation from a Single Image Using a Non-Hierarchical Encoder-Decoder Network with Pixel Shuffle

    TOYODA Yuma, ICHIGE Koichi

    J106-A ( 4 )   171 - 174   2023.4

    DOI CiNii Research

     More details

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

    We propose an accurate and lightweight depth estimation method from a single image using non-hierarchical encoder-decoder network with pixel shuffle. Performance of the proposed method is evaluated through simulation.

  • Contactless Biological Sensing and ECG Waveform Reconstruction Using FMCW Radar and Transformer

    ANZAI Ren, TODA Daiki, ICHIGE Koichi

    J106-B ( 3 )   208 - 216   2023.3  [Reviewed]

    DOI CiNii Research

     More details

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

    In this paper, we propose a waveform reconstruction method for ECG (ElectroCardioGram) signals using a transformer, a kind of deep learning model, for biological signals acquired by FMCW radar without contact. Although ECG signals are commonly used for heart rate monitoring, they have some disadvantages such as discomfort due to contact with the sensor during measurement. Therefore, a non-contact method using radar is attracted attention. In order to realize a highly accurate ECG waveform reconstruction method, a waveform reconstruction method using CNN (Convolutional Neural Network) and a deep learning method specializing in removing environmental noise from biological signals have been studied. In this paper, we propose a waveform reconstruction method for ECG signals by applying a transformer to the biological signals acquired by the FMCW radar for the purpose of further improving the accuracy. As a result, highly accurate waveform restoration was possible even under conditions where sinusoidal noise was added, confirming the superiority of the transformer-based method.

display all >>

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

      More details

    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

      More details

    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

      More details

    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

     More details

    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

     More details

    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 

     More details

    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 

     More details

    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 

     More details

    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

display all >>

 

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

  • 2023   Digital Circuit Theory

    Graduate school of Engineering Science

  • 2023   Programming Practice for Electrical and Computer Engineering

    College of Engineering Science

  • 2023   Programming Practice II for Electrical and Computer Engineering

    College of Engineering Science

  • 2023   Digital Signal Processing

    College of Engineering Science

  • 2023   Circuit Analysis

    College of Engineering Science

display all >>

 

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

     More details

    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

     More details

    Committee type:Academic society 

  • 国際会議ISAP2020

    2017.7 - 2021.2  論文委員会副委員長

     More details

    Committee type:Academic society 

  • 国際会議ISCAS2019

    2015.2 - 2020.5  財務委員長

     More details

    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

     More details

    Committee type:Academic society