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Research on electromagnetic wave scattering wall to control of radio wave propagation indoor in next-generation wireless communications

Research Project

Project/Area Number 20K14744
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionThe University of Electro-Communications (2021-2022)
National Institute of Information and Communications Technology (2020)

Principal Investigator

Murakami Yasutaka  電気通信大学, 大学院情報理工学研究科, 助教 (70849041)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsメタマテリアル / 電波伝搬 / 反射板 / 電波散乱 / アレーアンテナ理論 / 高速無線通信
Outline of Research at the Start

次世代の高速無線通信での使用が予想される300 GHz帯において電波の散乱を制御し,屋内での通信品質の改善や通信領域の限定化などを実現する電波散乱壁の研究開発を行う.電波散乱壁は送信アンテナからの電波に対して,通常の金属平板とは異なる散乱特性を有し,屋内の天井や壁に配置され,空間の電波伝搬環境の制御を実現する.また電波散乱壁は近似的解析手法を用いて高速・効率的に設計し,実験等で電波伝搬改善効果の有効性を明らかにする.

Outline of Final Research Achievements

In this research, an electromagnetic scattering wall to control the scattered waves in order to improve quality of the next-generation wireless communications the in an out-of-sight area.
A design method of an electromagnetic scattering wall for multiple direction scattering was proposed. We also introduced fast design and optimization methods using equivalent circuits of metamaterials, antenna array theory, and the genetic algorithm. A received signal strength was measured in the 28 GHz band using the designed electromagnetic scattering wall, and the effect of improving the communication quality in the blind zone was clarified.

Academic Significance and Societal Importance of the Research Achievements

本研究では,電波伝搬環境を制御できる電波散乱壁の最適設計方法を明確にすることで,任意の通信空間の実現に寄与する.近年,通信端末の爆発的な増大・使用周波数の高周波化に伴い,通信品質の確保や不感地帯の問題に対して,アンテナなどの通信機器だけで解決することは難しい.そのため本研究で提案して電波散乱壁を利用し,電波伝搬環境を制御することで,次世代高速無線通信のサービス向上に資することができる

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] Electromagnetic diffusion of a wall with modified checkerboard pattern2022

    • Author(s)
      Yasutaka Murakami, Jerdvisanop Chakarothai, Katsumi Fujii
    • Journal Title

      IEICE Communications Express

      Volume: 11 Issue: 1 Pages: 58-63

    • DOI

      10.1587/comex.2021XBL0187

    • NAID

      130008139299

    • ISSN
      2187-0136
    • Year and Date
      2022-01-01
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of electromagnetic scattering wall using genetic algorithm2020

    • Author(s)
      Murakami Yasutaka、Chakarothai Jerdvisanop、Fujii Katsumi
    • Journal Title

      IEICE Communications Express

      Volume: 9 Issue: 7 Pages: 282-287

    • DOI

      10.1587/comex.2020XBL0028

    • NAID

      130007868215

    • ISSN
      2187-0136
    • Year and Date
      2020-07-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 通信エリア拡大のための電波散乱シートの実証実験2023

    • Author(s)
      村上靖宜
    • Organizer
      電子情報通信学会 総合大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Design of Electromagnetic Scattering Sheet for Improvement of Wireless Communications Quality at 28 GHz2022

    • Author(s)
      Yasutaka Murakami
    • Organizer
      2022 Asia-Pacific Microwave Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 電波散乱壁を用いた28GHz帯の電波伝搬環境改善の実験的検証2022

    • Author(s)
      村上靖宜,チャカロタイ ジェドヴィスノプ,浜田リラ,藤井勝巳
    • Organizer
      電子情報通信学会 総合大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Improvement of EM Diffusion Performance of Checkerboard Structure in 28 GHz Band2021

    • Author(s)
      Yasutaka Murakami, Jerdvisanop Chakarothai and Katsumi Fujii
    • Organizer
      2021 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, SIGNAL & POWER INTEGRITY
    • Related Report
      2021 Research-status Report
  • [Presentation] A Design of Metamaterial Electromagnetic Scattering Wall2020

    • Author(s)
      Y. Murakami, J. Chakarothai and K. Fujii
    • Organizer
      URSI General Assembly and Scientific Symposium 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Design of an Electromagnetic Scattering Wall Applying Array Antenna Theory2020

    • Author(s)
      Y. Murakami, J. Chakarothai and K. Fujii
    • Organizer
      EMC Europe2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] アレーアンテナ理論を応用した電波散乱壁の設計-メタマテリアルによる薄型化-2020

    • Author(s)
      村上靖宜,チャカロタイジェドヴィスノプ,藤井勝巳
    • Organizer
      信学技報EMCJ 2020-13
    • Related Report
      2020 Research-status Report
  • [Book] ~5G/Beyond5Gに向けた~ 高速・高周波対応部材の最新開発動向2021

    • Author(s)
      複数、村上靖宜(第6章 7節担当)
    • Total Pages
      653
    • Publisher
      技術情報協会
    • ISBN
      9784861048289
    • Related Report
      2021 Research-status Report
  • [Book] 電波吸収体・電磁波シールド材の開発最前線 ─5Gに向けた設計と高性能化─2020

    • Author(s)
      橋本修 監修,村上靖宜(第25章担当)
    • Total Pages
      318
    • Publisher
      シーエムシー出版
    • ISBN
      9784781315133
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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