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OFDM Diversity Receiver based on Reactance-domain Signal Processing

Research Project

Project/Area Number 15360205
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Communication/Network engineering
Research InstitutionNara Institute of Science and Technology

Principal Investigator

OKADA Minoru  Nara Institute of Science and Technology, Graduate School of Information Science, Associate Professor, 情報科学研究科, 助教授 (10252587)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Heiichi  Nara Institute of Science and Technology, Graduate School of Information Science, Professor, 情報科学研究科, 教授 (40243357)
HARA Takao  Nara Institute of Science and Technology, Graduate School of Information Science, Assistant Professor, 情報科学研究科, 助手 (30372668)
SAITO Masato  Nara Institute of Science and Technology, Graduate School of Information Science, Assistant Professor, 情報科学研究科, 助手 (30335476)
知念 賢一  北陸先端科学技術大学院大学, 情報科学研究科, 助手 (20304157)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥11,600,000 (Direct Cost: ¥11,600,000)
Fiscal Year 2004: ¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 2003: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsOFDM / Space Diversity / Multipath / Mobile Reception / Mutual Coupling / Reactance Domain Signal Processing / ISDB-T / Terrestrial Digital Television Broadcasting / フェージング
Research Abstract

Although OFDM(Orthogonal Frequency Division Multiplex) is an efficient technique capable of reducing the performance degradation due to delay spreading in multipath environment and employed as a transmission technique for terrestrial digital television broadcasting and wireless LAN(local area network), it is not capable of improving the degradation due to fading. In order to overcome the fading problem, we have to use space diversity. However, it requires huge amount of computational cost. Especially, in case of post DFT(discrete Fourier transformation) combining diversity, it requires the same number of RF(radio frequency) front-end blocks and DFT processors as of diversity branches.
In order to achieve the space diversity receiver without huge hardware, this research project has proposed the reactance-domain signal processing, where the parasitic antenna close to the main antenna element is terminated with the variable reactance. By controlling the variable reactance, we can get the diversity effect with only one RF front-end followed by one OFDM receiver.
In this project, we have confirmed that the proposed diversity based on reactance-domain signal processing is performed as a diversity antenna by carrying out the evaluation test. According to the result, we have optimized the shape of antennas where the limitation in size of handheld terminal is taken into account. In order to design the more specific receiver with reactance-domain signal processing, we have developed the simulator for mobile reception of terrestrial digital television broadcasting. We have shown that the proposed reactance domain signal processing receiver is capable of obtaining diversity effect even in case of miniaturized antenna installed onto handheld terminals.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (18 results)

All 2005 2004 2003 Other

All Journal Article (14 results) Publications (4 results)

  • [Journal Article] アレーアンテナにより移動体の移動遠度を推定しドップラースプレッドを補償する地上波ディジタル放送受信機2005

    • Author(s)
      長井 則和, 高柳 英晃, 齋藤 将人, 岡田 実, 山本 平一
    • Journal Title

      電子情報通信学会和文論文誌B Vol.J88-B, No.4(掲載予定)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] An Array Antenna Assisted Digital Terrestrial Television Broadcasting Receiver with Vehicle Speed Estimation and Doppler Spread Compensation2005

    • Author(s)
      N.Nagai
    • Journal Title

      IEICE Transactions on Communications Vol.J88-B, No.4

      Pages: 741-750

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] アレーアンテナにより移動体の移動速度を推定しドップラースプレッドを補償する地上波ディジタル放送受信機2005

    • Author(s)
      長井 則和, 高柳 英晃, 齋藤 将人, 岡田 実, 山本 平一
    • Journal Title

      電子情報通信学会和文論文誌B Vol.J88-B, No.3(掲載予定)

    • NAID

      110003203082

    • Related Report
      2004 Annual Research Report
  • [Journal Article] マイクロセル用V字形ダイバーシチアンテナ2004

    • Author(s)
      駒井 知央, 堀 俊和, 長 敬三, 山本 平一, 岡田 実
    • Journal Title

      電子情報通信学会和文論文誌B Vol.J87-B, No.5

      Pages: 685-694

    • NAID

      110003170722

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Joint Antenna and Post-DFT Combining Diversity Scheme in OFDM Receiver2004

    • Author(s)
      T.Noritomo, M.Okada, H.Yamamoto
    • Journal Title

      1st international Symposium on Wireless Communication Systems

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Simple OFDM Diversity Receiver Based on Antenna Combining2004

    • Author(s)
      N.Aoyama, Y.C.Yu, M.Suzuki, M.Okada, H.Yamamoto
    • Journal Title

      2004 IEEE Radio and Wireless Conference

      Pages: 123-126

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] V Shaped Diversity Antenna for Microcell Station2004

    • Author(s)
      T.Komai
    • Journal Title

      IEICE Transactions on Communications Vol.J87-B, No.5

      Pages: 685-694

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Joint Antenna and Post-DFT Combining Diversity Scheme in OFDM Receiver2004

    • Author(s)
      T.Noritomo
    • Journal Title

      1st International Symposium on Wireless Communication Systems

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Simple OFDM Diversity Receiver Based on Antenna Combining2004

    • Author(s)
      N.Aoyama
    • Journal Title

      2004 IEEE Radio and Wireless Conference

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] マイクロセル用V字形ダイバーシチアンテナ2004

    • Author(s)
      駒井 知央, 堀 俊和, 長 敬三, 山本平一, 岡田実
    • Journal Title

      電子情報通信学会和文論文誌B Vol.J87-B, No.5

      Pages: 685-694

    • NAID

      110003170722

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Joint Antenna and Post-DFT Combining Diversity Scheme in OFDM Receiver2004

    • Author(s)
      T.Noritomo, M.Okada, H.Yamamoto
    • Journal Title

      1st International Symposium on Wireless Communication Systems 1

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Investigation of RoF link noise influence in ubiquitous antenna system2003

    • Author(s)
      S.Okumura
    • Journal Title

      IEICE Transactions on Electronics Vol.E86-C, No.8

      Pages: 1527-1535

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] OFDM Techniques for Mobile Reception of Digital Terrestrial Television Broadcasting2003

    • Author(s)
      M.Okada
    • Journal Title

      IEICE Technical Report IT Vol.IT2003-51

      Pages: 1-12

    • NAID

      10012111336

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Simple Diversity Receiver Controlled by Packet Error Detector for OFDM Wireless LAN2003

    • Author(s)
      M.Suzuki
    • Journal Title

      IEICE Society Conference Vol.B-5-164

      Pages: 541-541

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] S.Okamura: "Investigation of RoF link noise influence in uniquitous antenna system"IEICE Transacsions on Electronics. E86-C・8. 1527-1535 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 岡田 実: "地上デジタルテレビ放送移動受信のためのOFDM受信技術"電子情報通信学会技術研究報告IT. 1-12 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 岡田 実: "モバイルマルチメディアを支えるワイヤレス通信の今後"電子情報通信学会技術報告(MoMuC). (CD-ROM). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 鈴木 基紹: "OFDM無線LANにおけるパケット誤りにより制御を行う簡易ダイバーシチ受信機"電子情報通信学会ソサエティ大会. B-5-164(CD-ROM). (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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