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2006 Fiscal Year Final Research Report Summary

Development of Low Power Consumption OFDM Receiver based on Joint RF and Baseband Signal Processing

Research Project

Project/Area Number 17360181
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, Professor, 情報科学研究科, 教授 (10252587)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Heiichi  Nara Institute of Science and Technology, Vice President, 副学長 (40243357)
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)
KAWAI Eiji  Nara Institute of Science and Technology, Graduate School of Information Science, Associate Professor, 情報科学研究科, 助教授 (40362842)
Project Period (FY) 2005 – 2006
KeywordsOFDM / Handheld Terminal / Digital Broadcasting / One-Segment DTTB / ISDB-T / Mixed Signal Processing / Multipath Fading / Diversity
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. Recently, digital terrestrial television broadcasting for handheld terminals based on OFDM has been introduced in Japan. However, the power consumption of the receiver becomes a problem. The RF (radio frequency) front-end component of the receiver requires low noise figure (NF) linear amplifier. Generally speaking, it requires high power consumption amplifier to reduce the NF. Furthermore, the baseband signal processing block including FFT processors requires huge computational cost. That is, it is difficult to reduce the power consumption in principle.
In order to reduce the power consumption of the OFDM receiver, this research project has proposed an adaptive mixed signal processing, where the RF signal processing component including low NF amplifier is adaptively controlled its power consumption according to the channel condition. When the channel condition is good, the amplifier at the RF front-end is operated in low power mode, while it is switched to low NF mode if the channel condition becomes worse. In order to measure the channel condition, the baseband block measures the signal-to-noise ratios (SNR) of each OFDM sub-channel and estimates the instantaneous bit error rate from the measured SNRs.
In this project, we have confirmed that the proposed mixed signal processing receiver is capable of reducing power consumption.

  • Research Products

    (20 results)

All 2007 2006 2005 Other

All Journal Article (19 results) Book (1 results)

  • [Journal Article] Dipole Array Antenna Assisted Doppler Spread Compensator with MRC Diversity for ISDB-T Receiver2007

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEICE Transactions on Communications (to be published)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Peak-to-Average Power Ratio Reduction of Multi-Carrier CDMA Signals with Interleaver-based Selected Mapping2006

    • Author(s)
      Masato Saito, Akihiro Okuda, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      European Transactions on Telecommunications 117-6

      Pages: 695-701

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] OFDM地上波ディジタルテレビ放送信号のFM変調による衛星伝送2006

    • Author(s)
      コイルーアンワル, 原 孝雄, 岡田 実, 山本 平一
    • Journal Title

      電子情報通信学会和文論文誌B J89-B-11

      Pages: 2117-2126

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Peak-to-Average Power Ratio Reduction of Multi-Carrier CDMA Signals with Interleaver-based Selected Mapping2006

    • Author(s)
      Masato Saito, Akihiro Okuda, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      European Transactions on Telecommunications Vol.117, No.6

      Pages: 695-701

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Digital Terrestrial Television Transmission over OFDM/FM using Satellite Communications System2006

    • Author(s)
      Khoirul Anwar, Takao Hara, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      Transactions of IEICE B J89-B, 11

      Pages: 2117-2126

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effect of Dummy elements on Monopole-Array assisted Doppler Spread Compensator for Digital Terrestrial Television Broadcasting Receiver2006

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEEE Radio and Wireless Symposium (RWS2006)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dummy Elements Add on Both Sides of Monopole-array Assisted Doppler Spread Compensator for Digital Terrestrial Television Broadcasting Receiver2006

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Kazumichi Andoh, Heiichi Yamamoto
    • Journal Title

      2006 IEEE International Workshop on Antenna Technology

      Pages: 377-380

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Study for Various Array Antenna Assisted Doppler Spread Compensator with MRC Diversity of ISDB-T2006

    • Author(s)
      Young Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      2006 IEEE 63rd Vechicular Technology Conference

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Trend on Digital Terrestrial Television Broadcasting in Japan2006

    • Author(s)
      Minoru Okada
    • Journal Title

      2006 International Conference on Computers and Communications Engineering ICCCE 2006

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Adaptive RF front end for low power consumption digital terrestrial television broadcasting receiver2006

    • Author(s)
      Soo-hwan Kim, Minoru Okada, Masato Saito, Heiichi Yamamoto
    • Journal Title

      IEICE Technical Report MoMuc 106, 161

      Pages: 49-52

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effect of Dummy elements on a Monopole Array-assisted Doppler2006

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      12th Asia-Pacific conference on Communications (APCC 2006)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Reactance-Domain Modulation Scheme for Reduction Burst errors of ISDB-T receiver in Slow fading Environment2006

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      The 2006 International Symposium on Information Theory and its Applications

    • Description
      「研究成果報告書概要(欧文)」より
  • [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 J88-B-4

      Pages: 741-750

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Novel Array Antenna Assisted Adaptive Modulation Scheme for Fast Fading Channel2005

    • Author(s)
      [2] Tomotaka Wada, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEICE Transactions on Communications E88-B-8

      Pages: 3333-3392

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] リアウインドウ貼付型高感度ダイバーシチアンテナ2005

    • Author(s)
      駒井知央, 岡田 実, 山本平一
    • Journal Title

      映像情報メディア学会誌 59-9

      Pages: 1305-1312

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Novel Array Antenna Assisted Adaptive Modulation Scheme for Fast Fading Channel2005

    • Author(s)
      Tomotaka Wada, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEICE Transactions on Communications E88-B-8

      Pages: 3333-3392

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] High Sensitivity Diversity Antennas Attached to the Rear Window of Car2005

    • Author(s)
      Tomohiro Komai, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      The Journal of the Institute of Image Information and Television Engineers 59, 9

      Pages: 1305-1312

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dipole Array Antenna Assisted Doppler Spread Compensator with MRC Diversity for ISDB-T Receiver

    • Author(s)
      Young-Cheol Yu, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEICE Transactions on Communications (To be published in 2007)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Adaptive control of digital terrestrial television broadcasting receiver for reduction of RF-front end power consumption

    • Author(s)
      Soo-hwan Kim, Minoru Okada, Heiichi Yamamoto
    • Journal Title

      IEICE Technical Report MoMuC-101, 264

      Pages: 17-19

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] アンテナ・無線ハンドブック2006

    • Author(s)
      岡田 実他(共著)
    • Publisher
      オーム社
    • Description
      「研究成果報告書概要(和文)」より

URL: 

Published: 2008-05-27  

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