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Doppler Spreading Compensation Technique for Mobile Communications based on Space-Domain Interpolated Array Antenna

Research Project

Project/Area Number 13450160
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionNara Institute of Science and Technology

Principal Investigator

YAMAMOTO Heiichi  Nara Institute of Science and Technology, Graduate School of Information Science, Professor, 情報科学研究科, 教授 (40243357)

Co-Investigator(Kenkyū-buntansha) SAITO Masato  Nara Institute of Science and Technology, Graduate School of Information Science, Assistant, 情報科学研究科, 助手 (30335476)
CHINEN Ken'ichi  Japan Institute of Science and Technology, Graduate School of Information Science, Associate, 情報科学研究科, 助手 (20304157)
OKADA Minoru  Nara Institute of Science and Technology, Graduate School of Information Science, Associate, 情報科学研究科, 助教授 (10252587)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2003: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2001: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsOFDM / Orthogonal Frequency Division Multiplex / Doppler Spreading / Array Antenna / Space-Domain Interpolation / Digital Terrestrial Television Broadcasting / Fourth-Generation Mobile Communications / Multipath Fading / 多重ドップラーシフト / 移動受信 / 地上デジタルテレビ放送 / 車載受信機 / ダイバーシチ / 地上波デジタル放送 / ドップラーシフト / 空間内挿 / アレイアンテナ / 高速移動受信 / ドップラー
Research Abstract

Television Broadcasting, Wireless LAN (Local Ares Network) and a candidate for the next generation mobile communication systems. Although OFDM is robust to time-dispersive multipath channel, it has a major drawback in degradation due to Doppler spreading. In order to solve the Doppler spreading problem, this study proposes an array antenna assisted Doppler spread compensator based on space-domain interpolation. Since the proposed compensator estimates the received signal at the stationary point with respect to the ground, it eliminates the Doppler shift phenomenon during the symbol period. Although this compensation method is effective, it has some problems in implementing it onto cars and trains where the size and shape are strictly limitted. In order to solve the implementation issues, this study first proposes the new array antenna structure which can be attached on the side window of the vehicle. Then this research proposes a new algorithm for estimating the vehicle speed accrate enough for compensating for the Doppler spread. It also proposes a mutual coupling canceller for our array antenna. In our array antenna for Doppler spread compensator, the spacing amongst elements is much narrower than the conventional one. In this case, mutual coupling amangst element affects the performance of the compensator. Our mutual coupling canceller automatically measures the mutual impedance amongst elements and cancels it. Finally, this work proposes a joint diversity and Doppler spread compensator by making efficient use of array antenna. The proposed joint diversity and Doppler spread compensator drastically improves the bit error rate performance in high mobility mobile commujncation systems.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "Array Antenna Assisted Doppler spread Compensator for OFDM"European Transactions on Telecommunications. 13(5). 507-512 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 岡田実, 高橋英晃, 山本平一: "アレーアンテナを用いた伝搬路時変動による地上波デジタル放送の高速移動受信特性改善効果"映像情報メディア学会誌. 56(2). 237-244 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Takayanagi, M.Okada, H.Yamamoto: "Novel fast fading compensator for OFDM using space diversity with space-domain interpolation"Proc.IEEE Vehicular Technology Conference(VTC-Fall). 1(M46). 20-24 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "Array Antenna Assisted Doppler Spread Compensator for OFDM"Multi-Carrier Spread-Spectrum & Related Topics. 1. 337-344 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, T.Wada, H.Yamamoto: "Array Antenna Assisted Adaptive Modulation in a Fast Fading Channel"Proc.IEEE Vehicular Technology Conference(VTC-Spring). 1. 241-246 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] N.Nagai, M.Okada, M.Saito, H.Yamamoto: "Array Antenna Assisted Doppler Spread Compensator with Vehicle Speed Estimator for OFDM"Multi-Carrier Spread-Spectrum & Related Topics. 1. 299-306 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "Array Antenna Assisted Doppler Spread Compensator for OFDM"European Transactions on Telecommunicaitons. vol.16,no.5. 507-512 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "Array-Antenna-Assisted Doppler Spread Compensator for Mobile Reception of Terrestrial Television Broadcasting"The Journal of the Institute of Image Information and Television Engineers. vol.56,no.2. 237-244 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Takayanagi, M.Okada, H.Yamamoto: "Novel Fast Fading Compensator for OFDM Using Space Diversity with Space-Domain Interpolation"Proc.IEEE Vehicular Technology Conference(VTC-Fall). vol.1,no.M46. 20-24 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "Array Antenna Assisted Doppler Spread Compensator for OFDM"Multi-Carrier Spread-Spectrum & Related Topics. vol.1. 337-344 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Okada, T.Wada, H.Yamamoto: "Array Antenna Assisted Adaptive Modulation in a Fast Fading Channel"Proc.IEEE Vehicular Technology Conference(VTC-Spring). vol.1. 241-246 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] N.Nagai, M.Okada, M.Saito, H.Yamamoto: "Array Antenna Assisted Doppler Spread Compensator with Vehicle Speed Estimator for OFDM"Multi-Carrier Spread-Spectrum & Related Topics. vol.1. 299-306 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] N.Nagai: "Array antenna assisted Doppler spread compensator with vehicle speed estimator for OFDM Receiver"The 6^<th> International Symposium on Wireless Personal Multimedia Communications. 3. 430-434 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] N.Nagai: "Array antenna assisted Doppler spread compensator with vehicle speed estimator for OFDM"Fourth International Workshop on Multi-Carrier Spread-Spectrum. 299-306 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Okada: "Mobile reception of digital terrestrial television broadcasting for Mobile multimedia"The First Joint Workshop on Mobile Multimedia Communications. 117-120 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Okada: "Narrow OFDM receiver architecture for partial reception of ISDB-T signal"International Conference on Consumer Electronics 2003. 202-203 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 北之園 功太: "空間領域により多重ドップラシフトを行うOFDMダイバーシチ受信機"電子情報通信学会総合大会. B-1-256(CD-ROM). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 岡田 実, 高柳英晃, 山本平一: "アレーアンテナを用いた伝搬路時変動補償による地上派デジタル放送の高速移動受信特性改善効果"映像情報メディア学会誌. Vol.56,No.2. 237-244 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Minoru Okada, Hideaki Takayanagi, Heiichi Yamamoto: "Array Antenna Assisted Doppler Spread Compensator for OFDM"European Transactions on Telecommunications. Vol.13,No.5. 507-512 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 岡田 実, 高柳 英晃, 山本 平一: "アレーアンテナを用いた伝搬路変動補償による地上波デジタル放送の高速移動受信特性改善効果"映像情報メディア学会誌. Vol.56 No.2. 237-244 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Okada, H.Takayanagi, H.Yamamoto: "K.Fazel and S.Kaiser Ed.: Multi-Carrier Spread-Spectrum and Related Topics (分担:Array Antenna Assisted Doppler Spread Compensator for OFDM, pp. 337-344)"Kluwer Academic Publishers. 376 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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