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Research on elemental Technologies for Communication and Broacasting Integrated Services

Research Project

Project/Area Number 14550368
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionHiroshima City University

Principal Investigator

NISHI Masahiro  Hiroshima City University, Faculty of Information Sciences, Research Associate, 情報科学部, 助手 (30316137)

Co-Investigator(Kenkyū-buntansha) TAKAI Hiroyuki  Hiroshima City University, Faculty of Information Sciences, Reserach Associate, 助手 (20264963)
YOSHIDA Teruaki  Hiroshima City University, Faculty of Information Sciences, Professor, 教授 (50316139)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2003: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2002: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsCommunication and Broadcasting Integration / Radio Propagation / UHF band / GPS / Recieved Level Contour Map / Diversity Technique / Wireless Multicast / Link Capacity Controlled Method / UHF帯TV放送波 / 電力分布マップ / 電波搬
Research Abstract

In this investigation, we have proposed the new type of information platforms, where mobile communication systems and digital terrestrial broadcasting systems are effectively fused. The digital terrestrial broadcasting media using UHF band from 470 to 770 MHz is applied to the download link to achieve broadband transmissions. To realize the proposed platforms, we have focused on the ratio propagation characteristics in the UHF band, and the high effective data distribution method on the platforms in this investigation.
The UHF band radio propagation characteristics have been investigated based on the measurement. In the outdoor measurement, we utilized the measurement systems using GPS and UHF band receiver configured on the vehicle. By use of this measurement system, we can simultaneously measure the received level and the positioning data. And from the derived these data, we can configure the received level contour map around Hiroshima city. Evaluating the received level contour map combined with the terrain LOS area, it is found that the received level in UHF band has a high correlation to the terrain LOS area. On the other hand, from the results of indoor measurement, using the radio wave enters from outside to inside, it is clarified that there are many multi-path of radio wave at the receiver. The multi-path waves cause the large fading in the received level. To solve this problem, we have applied the diversity technique to the reception of the radio wave, and clarified that the diversity technique can largely improve the level fading.
Moreover, in the investigation of the data distribution method, we have proposed the wireless multicast method that can deliver the data to many users using radio waves. And it is found that the proposed method can improve distribution efficiency controlling the link capacity even if the unicast service coexists on the same networks.

Report

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

    (24 results)

All Other

All Publications (24 results)

  • [Publications] M.Nishi, Y.Okamura, T.Yoshida: "A Proposal of Adaptive Distribution Method by use of Wireless Multicast and Unicast Links"The first International Conference on Mobile Computing and Ubiquitous Networking (ICMU2004). 204-209 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, A.Yabuki, T.Yoshida: "EFFECT OF SPACE DIVERSITY TECHNIQUE IN UHF BAND RADIO INDOOR PROPAGATION"The 6th International Symposium on Antennas, Propagation, and EM Theory (ISAPE2003). 560-563 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, C.Kitamura, T.Yoshida: "Proposal of Multicast Method by use of Wireless Links considering Coexistent of Unicast Services"The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC2003). Vol.2. 362-366 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, S.Shibata, K.Takata, T.Yoshida: "UHF Radio Propagation Map using GPS and TV broadcasting Wave"2003 IEEE Topical Conference on Wireless Communication Technology (TCWCT2003). 1-6 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 西 正博, 吉田 彰顕: "通信放送融合によるUHF帯モバイル環境の提案"情報処理学会MBL研究会資料,2003-MBL-26. 1-6 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 高田健司, 西正博, 吉田彰顕: "屋外マルチパス環境におけるUHF帯TV放送波を用いたダイバーシチ受信効果に関する研究"第5回IEEE広島支部学生シンポジウム論文集. 103-106 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.TNishi, Y.Okamura, T.Yoshida: "A Proposal of Adaptive Distribution Method by use of Wireless Multicast and Unicast Links"The first International Conference on Mobile Computing and Ubiquitous Networking (ICMU2004). 204-209 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, A.Yabuki, T.Yoshida: "EFFECT OF SPACE DIVERSITY TECHNIQUE IN UHF BAND RADIO INDOOR PROPAGATION"The 6th International Symposium on Antennas, Propagation, and EM Theory (ISAPE2003). 560-563 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, C.Kitamura, T.Yoshida: "Proposal of Multicast Method by use of Wireless Links considering Coexistent of Unicast Services"The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC2003). Vol.2. 362-366 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, S.shibata, K.Takata, T.Yoshida: "UHF Radio Propagation Map using GPS and TV broadcasting Wave"2003 IEEE Topical Conference on Wireless Communication Technology (TCWCT2003). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.NIshi, T.Yoshida: "A Proposal of UHF band Mobile Information Platforms combined with Communication and Broadcasting Systems"IPSJ SIG Technical Report,2003-MBL-26. Vol.2003,No.93. 1-6 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, A.Yabuki, T.Yoshida: "MEASUREMENT OF UHF BAND RADIO PROPAGATION AFFECTED BY HUMAN MOTION BY USE OF EXIXTENT TV BROADCASTING WAVE"International Symposium on Antenna and Propagation (ISAP i-02). 392-395 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Nishi, Y.Okamura, T.Yoshida: "A Proposal of Adaptive Distribution Method by use of Wireless Multicast and Unicast Links"The first International Conference on Mobile Computing and Ubiquitous Networking (ICMU2004). 204-209 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nishi, A.Yabuki, T.Yoshida: "EFFECT OF SPACE DIVERSITY TECHNIQUE IN UHF BAND RADIO INDOOR PROPAGATION"The 6th International Symposium on Antennas, Propagation, and EM Theory (ISAPE2003). 560-563 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nishi, C.Kitamura, T.Yoshida: "Proposal of Multicast Method by use of Wireless Links considering Coexistent of Unicast Services"The 6th International Symposium on Wireless Personal Multimedia Communications (WPMC2003). Vol.2. 362-366 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nishi, S.Shibata, K.Takata, T.Yoshida: "UHF Radio Propagation Map using GPS and TV broadcasting Wave"2003 IEEE Topical Conference on Wireless Communication Technology (TCWCT2003). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 西 正博, 吉田 彰顕: "通信放送融合によるUHF帯モバイル環境の提案"情報処理学会MBL研究会資料,2003-MBL-26. 1-6 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 高田健司, 西正博, 吉田彰顕: "屋外マルチパス環境におけるUHF帯TV放送波を用いたダイバーシチ受信効果に関する研究"第5回IEEE広島学生シンポジウム. 103-106 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nishi, A.Yabuki, T.Yoshida: "MEASUREMENT OF UHF BAND RADIO PROPAGATION AFFECTED BY HUMAN MOTION BY USE OF EXISTENT TV BROADCASTING WAVE"International Symposium on Antenna and Propagation (ISAP i-02). 392-395 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Nishi, T.Yoshida: "Space Diversity Characteristics in UHF Mobile Outdoor Environments"International Symposium on Information Theory and Its Application (ISITA2002). 487-490 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Nishi, A.Okinaka, K.Takata, T.Yoshida: "Measurements of UHF Band Radio Propagation in Mobile Outdoor Environments by use of Existent TV Broadcasting Waves"Proc. IEEE Antenna & Propagation Society International Symposium (IEEE AP-S2002). Vol.1. 252-255 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 高田健司, 西 正博, 吉田彰顕: "TV放送波を用いたUHF帯屋外電波伝搬特性の測定"信学技報,CS2002-22 RCS2002-66. 1-6 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 矢吹旭, 西正博, 吉田彰顕: "UHF帯TV放送波を用いた屋内電波伝搬におけるタイバーシティ受信効果に関する研究"第4回IEEE広島支部学生シンポジウム論文集. 125-128 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 北村知恵子, 西正博, 吉田彰顕: "広域無線ゾーンエリアにおける高効率情報配信法に関する研究"第4回IEEE広島支部学生シンポジウム論文集. 118-121 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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