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2001 Fiscal Year Final Research Report Summary

Study on Adaptive Radio Resource, Access and Transmission Control Technologies for Wireless Communication Systems under Severe Electromagnetic Interference Conditions

Research Project

Project/Area Number 11450149
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 InstitutionOsaka University

Principal Investigator

MORINAGA Norihiko  Graduate School of Engineering, Osaka University, Professor, 大学院・工学研究科, 教授 (30029102)

Co-Investigator(Kenkyū-buntansha) MIYAMOTO Shinich  Graduate School of Engineering, Osaka University, Assistant Professor, 大学院・工学研究科, 助手 (50252614)
SAMPEI Seiichi  Graduate School of Engineering, Osaka University, Associate Professor, 大学院・工学研究科, 助教授 (50252599)
Project Period (FY) 1999 – 2001
KeywordsWireless Communication / Multiple Access / Adaptive Access Control / Adaptive Transmission Control / Electromagnetic Field / Electromagnetic Interference / OFDM / Adaptive Subcarrier Selection
Research Abstract

In this research, we have developed adaptive radio resource, access and transmission control technologies for wireless communication systems under severe electromagnetic interference and limited spectrum resource conditions. Specifically, we have developed the following four technologies, (1) adaptive transmission control techniques to support stable wireless communication links even under severe electromagnetic interference conditions, (2) interference suppression techniques to reduce interference input to the receiver, (3) adaptive radio resource management techniques in which radio resource for each terminal is adaptively assigned so as to minimize interference, and (4) adaptive access control techniques in which an access scheme is adaptively selected according to the electromagnetic and traffic conditions. Especially for time division multiple access (TDMA) based systems, we have developed an adaptive subcarrier selection techniques for orthogonal frequency division multiplexing/TDMA (OFDM/TDMA) systems in which less interfered subcarriers are adaptively selected and modulation parameters for the selected subcarrier is adaptively controlled, thereby dynamic channel assignment (DCA) based channel assignment process for TDMA is extremely simplified. With these results, we have concluded that both TDMA and code division multiple access (CDMA) are not almighty, rather each of them should be adaptively selected according to the electromagnetic and traffic conditions. We have also concluded that the adaptive radio transmission control and adaptive radio resource management technologies are very useful to mitigate the effect of dynamically varying channel as well as interference conditions.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Toru Inoue: "DS/CDMA and Adaptive Modulation based TDMA Dual Mode Scheme for High Speed Data Transmission Service in Wireless Multimedia Communication Systems"IEEE Vehicular Technology Conference 2001-Spring. 585-589 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomoaki Yoshiki: "High Bit Rate Transmission Scheme with a Multilevel Transmit Power Control for the OFDM based Adaptive Modulation Systems"IEEE Vehicular Technology Conference 2001-Spring. 727-731 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasumori Matsui: "OFDMA/TDD Packet Transmission System with an Adaptive Frame Format and Subcarrier Selection Scheme for Asymmetric Wireless Communication Services"2001 Digest of Technical Paper for IEEE ICCE. 54-55 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡部 勝己: "DS/CDMA方式におけるマルチパス群一括受信ビームフォーミング方式"電子情報通信学会論文誌B. J84,4. 1132-1140 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉識 知明: "高速データ伝送のためのマルチレベル送信電力制御を用いたOFDM適応変調方式"電子情報通信学会論文誌B. J84,4. 1141-1150 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] チャルームポン アピチャイチャルームウォン: "場所選択送信電力制御による適応ゾーン選択方式を用いた適応変調無線パケット通信システム"電子情報通信学会論文誌B. J84,4. 697-706 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toru Inoue, Seiichi Sampei and Norihiko Morinaga: "DS/CDMA Adaptive Modulation based TDMA Dual Mode Scheme for High Speed Data Transmission Service in Wireless Communication Systems"IEEE Vehicular Technology Conference 2001-Spring. 585-589 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoaki Yoshiki, Seiichi Sampei and Norihiko Morinaga: "High Bit Rate Transmission Scheme with a Multilevel Transmit Power Control for the OFDM based Adaptive Modulation Systems"IEEE Vehicular Technology Conference 2001-Spring. 727-731 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasunori Matsui, Seiichi Sampei and Norihiko Morinaga: "OFDMA/TDD Packet Transmission System with an Adaptive Frame Format and Subcarrier Selection Scheme for Asymmetric Wireless Communication Services"2001 Digest of Technical Paper for IEEE ICCE. 54-55 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsumi Watanabe, Seiichi Sampei and Norihiko Morinaga: "Grouped Multipath Receiving Technique for DS/CDMA Adaptive Array Antenna Systems"Trans. IEICE (B). Vol. J84-B, No.7. 1132-1140 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoaki Yoshiki, Seiichi Sampei and Norihiko Morinaga: "OFDM Based Adaptive Modulation Systems with a Multilevel Transmit Power Control for High Bit Rate Transmission"Trans. IEICE (B). Vol. J84-B, No.7. 1141-1150 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chalermpol Apichaichalermwongse, Seiichi Sampei and Norihiko Morinaga: "Adaptive Zone Selection Scheme with Area Selected Uplink Power Control for Adaptive Modulation Wireless Packet Radio Systems"Trans. IEICE (B). Vol. J84-B, No.4. 697-706 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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