Updated on 2025/03/27

写真a

 
Nishikawa Madoka
 
Organization
Graduate School of Science and Engineering (Engineering) Major of Science and Engineering Electrical and Electronic Engineering Associate Professor
Title
Associate Professor
Contact information
メールアドレス
External link

Degree

  • Doctor of Engineering ( 2020.3   Ehime University )

Research Interests

  • signal processing

Research Areas

  • Informatics / Intelligent informatics

Education

  • Ehime University   Graduate School of Science and Engineering

    2017.4 - 2020.3

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  • Ehime University   Graduate School of Science and Engineering

    2002.4 - 2004.3

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  • Ehime University   Faculty of Engineering   Department of Electrical and Electronic Engineering

    1998.4 - 2002.3

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Research History

  • 愛媛大学大学院 理工学研究科 准教授

    2022.10

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  • 愛媛大学大学院   理工学研究科   特任講師

    2021.4 - 2022.9

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  • 愛媛大学大学院   Assistant Professor

    2017.3 - 2021.3

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  • 愛媛県高等学校   教諭

    2004.4 - 2017.2

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Professional Memberships

Committee Memberships

  • 電子情報通信学会四国支部   学生会顧問  

    2020.4   

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Qualification acquired

  • 航空特殊無線技士

  • 工事担任者AI・DD総合種

  • 第三種電気主任技術者

  • エネルギー管理士(電気)

  • 第一種電気工事士

  • 危険物取扱者乙種第3類

  • 第一級陸上特殊無線技士

  • 危険物取扱者乙種第2類

  • 危険物取扱者乙種第5類

  • 危険物取扱者乙種第1類

  • 危険物取扱者乙種第6類

  • 危険物取扱者乙種第4類

  • 基本情報技術者

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Papers

  • A study on usefulness of neural network equalizer to reduce impact of amplitude fluctuations in magnetic tape Reviewed

    Madoka Nishikawa, Yasuaki Nakamura, Yoshihiro Okamoto

    Japanese Journal of Applied Physics   63 ( 10 )   10SP09 - 10SP09   2024.10

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

    Abstract

    As digital data grows explosively year after year, magnetic tape devices, with their high reliability and long-term storage capacity, are widely used for backup and archiving. Magnetic tape devices with larger capacity are required, and it is necessary to improve track density. We have previously constructed a simulator that considers inter-track interference due to narrower tracks in barium ferrite (BaFe) magnetic tape drives and evaluated its performance. In this study, we develop a simulator which more accurately models the experimental data, considering amplitude fluctuations caused by the problem of poor tape running, and discuss the usefulness of a neural network equalizer to reduce the effects of amplitude fluctuations. As a result, we show that applying the neural network equalizer is useful in reducing the impact of amplitude fluctuations caused by the problem of poor tape running.

    DOI: 10.35848/1347-4065/ad8099

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    Other Link: https://iopscience.iop.org/article/10.35848/1347-4065/ad8099/pdf

  • A study on HAMR read/write channel models for double layer magnetic recording

    Yasuaki Nakamura, Madoka Nishikawa, Simon J. Greaves, Yasushi Kanai, Yoshihiro Okamoto

    Japanese Journal of Applied Physics   63 ( 8 )   08SP11 - 08SP11   2024.8

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    Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

    Abstract

    Three-dimensional (3D) magnetic recording with multiple recording layers has garnered considerable attention as a next-generation magnetic recording method that uses dual conventional recording layers and a magnetoresistive (MR) head for reading. In this work, to examine signal processing methods for the 3D magnetic read/write (R/W) channel using heat-assisted magnetic recording (HAMR), we have constructed a HAMR R/W channel using a granular media model. Our 3D HAMR R/W channel model, specialized for signal processing development, can account for the Curie temperatures of the recording layers and the temperature distribution of the heat source.

    DOI: 10.35848/1347-4065/ad6b9f

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    Other Link: https://iopscience.iop.org/article/10.35848/1347-4065/ad6b9f/pdf

  • A study on acceleration of SP decoder using reliability of recording sequence by neural network based on parity check result in SMR system Reviewed

    Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Yoshihiro Okamoto

    AIP Advances   14 ( 2 )   2024.2

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    We study signal processing methods to realize ultra-high-density hard disk drives (HDDs). Among them, we have applied the neural network to improve decoding performance in low-density parity-check (LDPC) coding and iterative decoding in the shingled magnetic recording (SMR) system. In this study, we realize acceleration of the sum-product (SP) decoding by updating the decoding reliability of the SP decoding using the reliability of the recording sequence calculated by the neural network based on the parity check results. As a result, the proposed system achieved error-free with the fewest number of iterations in the SP decoder compared to our previous studies.

    DOI: 10.1063/9.0000710

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  • Improvement of SP Decoding Considering the Influence of Recording Patterns by Neural Network in SMR Reviewed

    Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   1 - 1   2024

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2024.3402814

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  • A Study on Accelerating SP decoding by Neural Network in SMR System Reviewed

    Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   59 ( 11 )   1 - 6   2023.11

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2023.3278377

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  • Performance Evaluation of Burst Error Correction by LDPC Coding and Iterative Decoding System in Magnetic Tape Drive

    Yasuaki Nakamura, Taisei Akamatsu, Madoka Nishikawa, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   59 ( 3 )   1 - 5   2023.3

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2022.3201898

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  • A Study of Three-Dimensional Equalization for Reproducing a Double-Layer Magnetic Recording Medium Reviewed

    Yasuaki Nakamura, Madoka Nishikawa, Yasushi Kanai, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   58 ( 8 )   1 - 4   2022.8

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2022.3146058

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  • A Study of Performance Evaluation with Neural Network Detector in SMR System Reviewed

    Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   58 ( 4 )   1 - 5   2022.4

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  • A Study of Channel Time-domain Response on Equalization for Reproducing a Double-layer Magnetic Recording Medium Reviewed

    58 ( 4 )   1 - 5   2022.4

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  • A Study of Samples Captured at Phases for Multi-Dimensional Magnetic Recording System with Double Recording Layers

    Yasuaki Nakamura, Madoka Nishikawa, Yasushi Kanai, Yoshihiro Okamoto

    2021 IEEE International Magnetic Conference (INTERMAG)   2021.4

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    Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

    DOI: 10.1109/intermag42984.2021.9579866

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  • Performance Improvement of Dual STO Reading With AM–FM Combined Detection for 3-D Magnetic Recording Reviewed

    Y. Nakamura, M. Nishikawa, Y. Okamoto

    IEEE Transactions on Magnetics   57 ( 3 )   1 - 5   2021.3

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2020.3030300

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  • A Study on Neural Network Detector in SMR System Reviewed

    M. Nishikawa, Y.Nakamura, Y. Kanai, H.Osawa, Y. Okamoto

    IEEE Transactions on Magnetics   57 ( 3 )   1 - 5   2021.3

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2020.3027253

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  • A Study on AM–FM Combined Detection for Magnetic Recording Using STO Reading Reviewed

    Y. Nakamura, K. Masuda, M. Nishikawa, Y. Okamoto

    IEEE Transactions on Magnetics   57 ( 2 )   1 - 5   2021.2

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2020.3012156

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  • Improvement of Iterative Decoding With LLR Modulator by Neural Network Using Magnetic Transition Information in SMR System Reviewed

    M. Nishikawa, Y. Nakamura, Y. Kanai, H. Osawa, Y. Okamoto

    IEEE Transactions on Magnetics   57 ( 2 )   1 - 5   2021.2

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2020.3011163

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  • A Study of Channel Time-Domain Response on Equalization for Reproducing a Double-Layer Magnetic Recording Medium

    Yasuaki Nakamura, Madoka Nishikawa, Yasushi Kanai, Yoshihiro Okamoto

    IEEE Transactions on Magnetics   58 ( 4 )   1 - 1   2021

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2021.3113904

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  • A Study on Iterative Decoding With LLR Modulator by Neural Network Using Adjacent Track Information in SMR System Reviewed

    M. Nishikawa, Y. Nakamura, Y. Kanai, H. Osawa, Y. Okamoto

    IEEE Transactions on Magnetics   55 ( 12 )   1 - 5   2019.12

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2019.2936238

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  • Performance Evaluation of LDPC Coding and Iterative Decoding System for 3-D Magnetic Recording With Dot Position Fluctuation Reviewed

    K. Masuda, Y. Nakamura, M. Nishikawa, Y. Okamoto

    IEEE Transactions on Magnetics   55 ( 7 )   1 - 4   2019.7

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2019.2891299

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  • A Study on Iterative Decoding With LLR Modulator Using Neural Network in SMR System

    M. Nishikawa, Y. Nakamura, H. Osawa, Y. Okamoto, Y. Kanai

    IEEE Transactions on Magnetics   55 ( 7 )   1 - 4   2019.7

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2019.2891711

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  • A Study on Iterative Decoding With LLR Modulator by Parity Check Information in SMR System Reviewed

    M. Nishikawa, Y. Nakamura, H. Osawa, Y. Okamoto, Y. Kanai, H. Muraoka

    IEEE Transactions on Magnetics   54 ( 11 )   1 - 4   2018.11

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    DOI: 10.1109/tmag.2018.2833167

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  • SNR Improvement of Envelope Demodulation Using Two Temporal Magnetization Dynamics From Dual-Spin-Torque Oscillator Reviewed

    Y. Nakamura, M. Nishikawa, H. Osawa, Y. Okamoto, T. Kanao, R. Sato

    IEEE Transactions on Magnetics   54 ( 11 )   1 - 4   2018.11

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    Publishing type:Research paper (scientific journal)   Publisher:Institute of Electrical and Electronics Engineers (IEEE)  

    DOI: 10.1109/tmag.2018.2829220

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  • Envelope detection using temporal magnetization dynamics of resonantly interacting spin-torque oscillator Reviewed

    Y. Nakamura, M. Nishikawa, H. Osawa, Y. Okamoto, T. Kanao, R. Sato

    AIP Advances   8 ( 5 )   2018.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Institute of Physics Inc.  

    In this article, we propose the detection method of the recorded data pattern by the envelope of the temporal magnetization dynamics of resonantly interacting spin-torque oscillator on the microwave assisted magnetic recording for three-dimensional magnetic recording. We simulate the envelope of the waveform from recorded dots with the staggered magnetization configuration, which are calculated by using a micromagnetic simulation. We study the data detection methods for the envelope and propose a soft-output Viterbi algorithm (SOVA) for partial response (PR) system as a signal processing system for three dimensional magnetic recording.

    DOI: 10.1063/1.5006105

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  • A Study on Relationship Between Recording Pattern and Decoding Reliability in SMR Reviewed

    R. Suzutou, Y. Nakamura, M. Nishikawa, H. Osawa, Y. Okamoto, Y. Kanai, H. Muraoka

    IEEE Transaction on Magnetics   53 ( 11 )   2017.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    The shingled magnetic recording (SMR) system is influenced by not only jitter-like medium noise from adjacent bits in the down-track direction but also intertrack interference (ITI) from the adjacent tracks. In this paper, we investigate the relationship between the recording pattern and the decoding reliability by classifying the log-likelihood ratio at the a posteriori probability decoder output according to the recording patterns under an SMR R-W channel specification of 4 Tb/in(2) by computer simulation. The result shows that the decoding reliability for the recording pattern "010" heavily affected by transition jitter is the lowest and little improved even if the influence of ITI is mitigated by a 2-D finite-impulse response filter.

    DOI: 10.1109/TMAG.2017.2721428

    Web of Science

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  • A Study on Optimal BAR in Array Head Reading Reviewed

    T. Kondoh, Y. Nakamura, M. Nishikawa, H. Osawa, Y. Okamoto, Y. Kanai, H. Muraoka

    IEEE Transaction on Magnetics   53 ( 11 )   2017.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    Two-dimensional magnetic recording (TDMR), which combines shingled magnetic recording (SMR) with 2-D signal processing attracts attention from the hard disk drive industry. SMR is a magnetic recording system in order to increase the track density by writing tracks without the guard band. Therefore, the influences of writing and reading intertrack interferences (ITIs) deteriorate the quality of reproducing waveforms. Additionally, degradation of track due to overwriting and crosstalk from the adjacent tracks due to the width of reader sensitivity. The equalization using 2-D finite impulse response filter for the waveforms from three adjacent tracks is proposed as a method to reduce the influence of reading ITIs. In this paper, we evaluate the bit aspect ratio (BAR) in TDMR read/write channel under a specification of 4 Tb/in(2) using bit error rate of the low-density parity-check (LDPC) coding and iterative decoding system obtained by computer simulation. The results show that the suitable BAR in array head reading is 2.0.

    DOI: 10.1109/TMAG.2017.2701355

    Web of Science

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MISC

  • A study on correction for insertion/deletion errors in domain wall motion memory

    仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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  • HAMRを用いた二層磁気記録におけるキュリー点差の一検討

    渡部智也, 仲村泰明, 西川まどか, サイモン グリーブス, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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  • A study on recording condition evaluation for multilayer magnetic recording using HAMR

    渡部智也, 仲村泰明, 西川まどか, GREAVES Simon, 岡本好弘

    電子情報通信学会技術研究報告(Web)   124 ( 67(MRIS2024 1-7) )   2024

  • SP復号器の性能改善のためのGAの適用に関する一検討

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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  • レーストラックメモリにおける1ビットの情報を挟む連続した磁壁の移動に関する一検討

    渡勇斗, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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  • HAMRを用いた二層磁気記録のための等化に関する一検討

    渡部智也, 仲村泰明, 西川まどか, サイモン グリーブス, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   124 ( 292(MRIS2024-32 27-33) )   2024

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  • A study on performance improvement of SP decoder in SMR

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2023   2023

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  • Effect of filler on magnetic tape drives using barium ferrite

    仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会技術研究報告(Web)   123 ( 65(MRIS2023 1-7) )   2023

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  • A study on estimating bit shape using medium coercive and effective magnetic write field.

    中島和輝, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   123 ( 295(MRIS2023 22-29) )   2023

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  • A Study of HAMR R/W Channels for Multilayer Magnetic Recording

    仲村泰明, 西川まどか, GREAVES Simon J., 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   123 ( 295(MRIS2023 22-29) )   2023

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  • Performance Evaluation of SP Decoding Considering the Influence of Recording Pattern Using Neural Network

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   123 ( 295(MRIS2023 22-29) )   2023

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  • A Study on Application of Neural Network Equalizer to Reduce Effect of Amplitude Fluctuation in Magnetic Tape Device

    西川まどか, 仲村泰明, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2023   2023

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  • A study on Estimation of Bit Shape by Effective Magnetic Write Field

    中島和輝, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2023   2023

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  • Improvement of decoding performance using neural network by likelihood learning based on LDPC code constraint in SMR Invited

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2022   2022

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  • A study on overwrite performance in multi-layered recording by MAMR

    高松慧介, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2022   2022

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  • A Study of Read/Write Channel using a Double Layered Granular Medium Model

    中島和輝, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   122 ( 63(MRIS2022 1-5) )   2022

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  • On Signal Processing for 3D Magnetic Recording

    仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2022   2022

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  • A study on read/write channel model of multiple layer magnetic recording

    仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   122 ( 297(MRIS2022 18-27) )   2022

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  • Performance Evaluation of CIRC in Magnetic Tape Drive using BaFe Magnetic Tape

    赤松汰星, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2021   2021

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  • A study on writing magnetic field in multi-layered recording by MAMR

    高松慧介, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電気・電子・情報関係学会四国支部連合大会講演論文集(CD-ROM)   2021   2021

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  • A Study on Burst Error Correction in Magnetic Tape Drive by LDPC Code

    赤松汰星, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会技術研究報告(Web)   121 ( 291(MRIS2021 11-15) )   2021

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  • A study on assist effect of STO in multilayered recording by MAMR

    高松慧介, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2021   2021

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  • A study on connection weight of neural network detector in SMR

    西川まどか, 仲村泰明, 金井靖, 大沢寿, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2021   2021

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  • A Study of Equalization for Reproducing a Double-Layer Magnetic Recording Medium

    仲村泰明, 岡田拓也, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会技術研究報告(Web)   121 ( 60(MRIS2021 1-5) )   2021

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  • Development of Signal Processing for Microwave Assisted Magnetic Recording

    仲村泰明, 西川まどか, 岡本好弘

    まぐね   15 ( 2 )   2020

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  • A study on AM and FM detections in iterative decoding for three-dimensional magnetic recording using STO reading

    増田圭太, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2020   2020

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  • A study on LLR modulator with neural network using information of magnetic transitions in SMR

    西川まどか, 仲村泰明, 金井靖, 大沢寿, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2020   2020

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    J-GLOBAL

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  • A Study on Iterative Decoding Using Neural Network in SMR

    西川まどか, 仲村泰明, 金井靖, 大沢寿, 岡本好弘

    電子情報通信学会技術研究報告(Web)   120 ( 274(MRIS2020 5-10) )   2020

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    J-GLOBAL

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  • A study on neural network LLR adjuster considering inter-track interference

    西川まどか, 仲村泰明, 金井靖, 大沢寿, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2020   2020

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  • A study on simulator for multilayered recording using MAMR

    高松慧介, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会大会講演論文集(CD-ROM)   2020   2020

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    J-GLOBAL

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  • Performance Evaluation of Neural Network Equalizer in Magnetic Tape Drive using BaFe Magnetic Tape

    赤松汰星, 西川まどか, 仲村泰明, 岡本好弘

    電気・電子・情報関係学会四国支部連合大会講演論文集(CD-ROM)   2020   2020

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  • STOを用いた磁気共鳴再生のためのGPR方式の一検討—A study of GPR system for magnetic resonance reading using STO—磁気記録・情報ストレージ

    増田 圭太, 仲村 泰明, 西川 まどか, 岡本 好弘, 金尾 太郎, 佐藤 利江

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   118 ( 74 )   31 - 36   2018.6

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    Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.   Publisher:東京 : 電子情報通信学会  

    CiNii Books

    CiNii Research

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    Other Link: http://id.ndl.go.jp/bib/029084816

  • 三次元磁気記録のためのドット径変動を伴う記録再生系の一検討

    増田圭太, 仲村泰明, 西川まどか, 大沢寿, 岡本好弘, 金尾太郎, 佐藤利江

    電子情報通信学会大会講演論文集(CD-ROM)   2018   ROMBUNNO.C‐7‐3   2018.3

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    J-GLOBAL

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  • Performance improvement of iterative decoding by LLR modification using parity check information in SMR system

    117 ( 247 )   35 - 40   2017.10

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    CiNii Books

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  • A study on BAR for areal density and reader size in SMR system

    117 ( 247 )   41 - 45   2017.10

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  • A study on BAR for areal density and reader size in SMR system

    41 ( 34 )   41 - 45   2017.10

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    CiNii Books

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  • Performance improvement of iterative decoding by LLR modification using parity check information in SMR system

    41 ( 34 )   35 - 40   2017.10

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  • A study of two-track lump reading scheme on bit patterned medium

    117 ( 80 )   29 - 33   2017.6

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Presentations

  • SMRにおけるLDPC符号化方式のパリティ検査行列に関する一検討

    西川まどか, 仲村泰明, 金井 靖, 大沢 寿, 岡本好弘

    平成30年度電気関係学会四国支部連合大会  2018.9 

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  • ドット径変動を伴うSTOを用いた磁気共鳴再生のためのLDPC符号化・繰返し復号化方式の一検討

    増田圭太, 仲村泰明, 西川まどか, 岡本好弘

    平成30年度電気関係四国支部連合大会  2018.9 

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  • バリュウムフェライト磁気テープ装置のためのITIを考慮した記録再生系シミュレータ構築

    仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 武者敦史

    2018年電子情報通信学会 エレクトロニクスソサイエティ大会  2018.9 

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  • SMRにおけるLDPC符号化方式のための偶数誤りに関する一検討

    西川まどか, 仲村泰明, 大沢 寿, 岡本好弘, 金井 靖

    2018年電子情報通信学会 エレクトロニクスソサイエティ大会  2018.9 

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  • STOを用いた磁気記録再生のためのGPR方式の一検討

    増田圭太, 仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 金尾太郎, 佐藤利江

    電子情報通信学会 磁気記録・情報ストレージ研究会  2018.6 

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  • SMRにおけるニューラルネットワークLLR調整器を備えた繰返し復号方式の一検討

    西川まどか, 仲村泰明, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    電子情報通信学会 磁気記録・情報ストレージ研究会  2018.6 

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  • 三次元磁気記録のためのドット径変動を伴う記録再生系の一検討

    増田圭太, 仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 金尾太郎, 佐藤利江

    2018年電子情報通信学会 総合大会  2018.3 

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  • SMRにおけるLLR調整器を備えたLDPC符号化方式のパリティ検査に関する一検討

    西川まどか, 仲村泰明, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    2018年電子情報通信学会 総合大会  2018.3 

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  • SMR-HDDにおけるパリティ検査情報よるLLR調整器を備えた繰り返し復号の一検討 Invited

    西川まどか, 仲村泰明, 大沢寿, 岡本好弘, 金井靖, 村岡裕明

    (社)日本機械学会 第12回「情報機器のメカニクス制御に関する分科会」(2)  2018.2 

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  • SMR-HDDにおけるパリティ検査情報によるLLR調整器を備えた繰返し復号の一検討

    西川まどか, 仲村泰明, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    電子情報通信学会 磁気記録・情報ストレージ研究会  2017.12 

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  • A Study on MAMR R/W Channel Modeling for Signal Processing

    Yuji YAMADA, Yasuaki NAKAMURA, Madoka NISHIKAWA, Yasushi KANAI, Hisashi OSAWA, Yoshihiro OKAMOTO

    2019.12 

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  • A Study on Iterative Decoding Using Information of Magnetic Transitions in SMR

    Madoka NISHIKAWA, Yasuaki NAKAMURA, Yasushi KANAI, Hisashi OSAWA, Yoshihiro OKAMOTO

    2019.12 

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  • 瓦磁気記録のためのニューラルネットワークによる信号処理 Invited

    西川まどか, 仲村泰明, 岡本好弘

    第5回 関西四国磁性研究会  2019.11 

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  • A study on output function in neural network LLR modulator

    NISHIKAWA Madoka

    2019.9 

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  • A study on read/write channel simulator for three-dimensional magnetic recording using STO reading

    NISHIKAWA Madoka

    2019.9 

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  • A Study on Two-Dimensional Signal Processing for Barium Ferrite Magnetic Tape Medium

    NISHIKAWA Madoka

    2019.6 

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    Presentation type:Oral presentation (general)  

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  • A study on neural network LLR modulation in TDMR

    NISHIKAWA Madoka

    2019.6 

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  • SMRにおける隣接トラックの影響を考慮したニューラルネットワークを用いたLLR調整の一検討

    西川まどか, 仲村泰明, 金井 靖, 大沢 寿, 岡本好弘

    2019年電子情報通信学会 総合大会  2019.3 

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  • STO再生による三次元磁気記録のためのFM検波に関する一検討

    増田圭太, 仲村泰明, 西川まどか, 岡本好弘

    2019年電子情報通信学会 総合大会  2019.3 

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  • ニューラルネットワーク判定を用いたLLR調整の一検討

    西川まどか, 仲村泰明, 金井 靖, 大沢 寿, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2018.12 

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  • MAMRを用いた多層記録における上書き記録特性の一検討

    高松慧介, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会 総合大会  2022.3 

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  • LDPC符号による磁気テープ装置におけるバースト誤り訂正に関する一検討

    赤松汰星, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2021.12 

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  • MAMRによる多層記録における記録磁界の一検討

    高松慧介, 仲村泰明, 西川まどか, 岡本好弘

    令和3年度電気関係学会四国支部連合大会  2021.9 

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  • BaFe磁気テープを用いた磁気テープ装置におけるCIRCの性能評価

    赤松汰星, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会 ソサイエティ大会  2021.9 

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  • 二層磁気記録媒体を再生するための等化の一検討

    仲村泰明, 岡田拓也, 西川まどか, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2021.6 

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  • A Study on Connection Weight of Neural Network Detector in SMR

    2021.3 

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  • A study on assist effect of STO in multilayered recording by MAMR

    2021.3 

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  • SMRにおけるニューラルネットワークを用いた繰返し復号の一検討

    西川まどか, 仲村泰明, 金井 靖, 大沢 寿, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2020.12 

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  • BaFe磁気テープを用いた磁気テープ 装置におけるニューラルネットワーク等化器の性能評価

    赤松汰星, 西川まどか, 仲村泰明, 岡本好弘

    令和2年度電気関係学会四国支部連合大会  2020.9 

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  • MAMRによる多層記録シミュレータの一検討

    高松慧介, 仲村泰明, 西川まどか, 金井 靖, 岡本好弘

    電子情報通信学会 ソサイエティ大会  2020.9 

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  • ニューラルネットワークにより記録パターンの影響を考慮したSP復号の性能評価

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2023.12 

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  • 多層磁気記録のためのHAMR記録再生系の一検討

    仲村泰明, 西川まどか, サイモン・グリーブス, 金井靖, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2023.12 

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  • 媒体保磁力と有効記録磁界によるビット形状推定の一検討

    中島和輝, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2023.12 

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  • 磁気テープ装置における振幅変動の影響低減のためのニューラルネットワーク等化器の適用に関する一検討

    西川まどか, 仲村泰明, 岡本好弘

    電子情報通信学会 ソサイエティ大会  2023.9 

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  • 有効記録磁界によるビット形状推定の一検討

    中島和輝, 仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会 ソサイエティ大会  2023.9 

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  • バリウムフェライトを用いた磁気テープ装置におけるフィラーの影響

    仲村泰明, 西川まどか, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2023.6 

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  • SMRにおけるSP復号器の性能改善に関する一検討

    西川まどか, 仲村泰明, 金井 靖, 岡本好弘

    電子情報通信学会 総合大会  2023.3 

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  • 多層磁気記録の記録再生系モデルの一検討

    仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2022.12 

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  • SMRにおける面記録密度とリーダサイズに対するBARの一検討

    仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    電子情報通信学会 磁気記録・情報ストレージ研究会  2017.10 

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  • 二層グラニュラ媒体モデルにおける記録再生系の一検討

    中島和輝, 仲村泰明, 西川まどか, 金井靖, 岡本好弘

    電子情報通信学会 磁気記録・情報ストレージ研究会  2022.6 

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  • SMRにおけるパリティ検査情報を用いたLLR修正による繰返し復号の性能改善

    西川まどか, 仲村泰明, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    電子情報通信学会 磁気記録・情報ストレージ研究会  2017.10 

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  • SMRにおけるLDPC符号の制約に基づく尤度学習によるニューラルネットワークを用いた復号性能改善 Invited

    西川まどか, 仲村泰明, 金井靖, 岡本好弘

    電子情報通信学会 総合大会  2022.3 

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  • 記録状態とリーダサイズに適した面記録密度

    仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    2017年電子情報通信学会 エレクトロニクスソサイエティ大会  2017.7 

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  • ビットパターン媒体における2トラック一括再生方式の一検討

    仲村泰明, 上野裕貴, 西川まどか, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    電子情報通信学会 磁気記録・情報ストレージ研究会  2017.6 

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  • アレイヘッド再生下でのSMRにおけるBARの一検討

    近藤宰吉, 仲村泰明, 西川まどか, 大沢 寿, 岡本好弘, 金井 靖, 村岡裕明

    2017年電子情報通信学会 総合大会  2017.3 

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Awards

  • 令和4年度 工学部教育貢献賞

    2022.8   愛媛大学  

    西川まどか

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  • Best Contributed Poster Award

    2019.7   TMRC(The 30th Magnetic Recording Conference)2019  

    NISHIKAWA Madoka

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  • 優秀ポスター賞

    2018.12   第4回関西四国磁性研究会  

    西川 まどか

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  • 磁気記録研究会専門委員長賞

    2003.10   磁気記録研究会  

    西川(藤渕) まどか

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  • 四国支部奨励賞

    2002.3   電気関係学会  

    西川(藤渕) まどか

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Research Projects

  • ニューラルネットワークを適用した瓦磁気記録のための信号処理方式に関する研究

    2022.4 - 2027.3

    日本学術振興会  科学研究費助成事業  若手研究

    西川 まどか

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    Grant amount:\3120000 ( Direct Cost: \2400000 、 Indirect Cost:\720000 )

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Other

  • 航空特殊無線技士

    2016.3

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  • 工事担任者AI・DD総合種

    2015.1

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  • 第三種電気主任技術者

    2010.12

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  • エネルギー管理士(電気) 試験合格

    2010.9

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  • 第一種電気工事士 試験合格

    2009.11

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  • 危険物取扱者乙種第3類

    2008.12

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  • 第一級陸上特殊無線技士

    2008.4

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  • 危険物取扱者乙種第2・5類

    2007.12

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  • 危険物取扱者乙種第1・6類

    2007.7

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  • 危険物取扱者乙種第4類

    2006.7

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  • 基本情報技術者

    2002.11

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Teaching Experience

  • キャリアデザイン

    2024.4 Institution:愛媛大学

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  • 新入生セミナー

    2024.4 Institution:愛媛大学

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  • デジタルテクノロジー入門

    2024.4 Institution:愛媛大学

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  • 電子回路応用特論

    2023.4 Institution:愛媛大学

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  • 学部共通PBL

    2022.4 Institution:愛媛大学

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  • ディジタル信号処理特論

    2021.4 Institution:愛媛大学

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  • 電気電子工学演習Ⅱ

    2021.4 - 2022.3 Institution:愛媛大学

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  • 工学リテラシーⅡ

    2019.4 Institution:愛媛大学

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  • 線形代数Ⅰ

    2019.4 Institution:愛媛大学

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  • 通信工学概論

    2019.4 Institution:愛媛大学

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  • 電気電子工学実験Ⅱ

    2018.4 Institution:愛媛大学

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  • プログラミング演習Ⅰ

    2017.4 - 2021.3 Institution:愛媛大学

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  • プログラミング演習Ⅱ

    2017.4 - 2021.3 Institution:愛媛大学

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