National Tsing Hua University Institutional Repository:Cooperative beamforming with multi-relay selection for wireless ad hoc networks
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 54367/62174 (87%)
造访人次 : 13948357      在线人数 : 54
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻
    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 會議論文  >  Cooperative beamforming with multi-relay selection for wireless ad hoc networks


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83667


    题名: Cooperative beamforming with multi-relay selection for wireless ad hoc networks
    作者: Chin-Liang Wang;Ting-Nan Cho;Syue-Ju Syue
    教師: 王晉良
    日期: 2011
    出版者: Institute of Electrical and Electronics Engineers
    關聯: Proceedings of the 2011 IEEE Vehicular Technology Conference - Spring (VTC 2011-Spring), Budapest, Hungary, MAY 15-18, 2011, Pages 1 - 5
    关键词: wireless ad hoc networks
    Cooperative beamforming
    摘要: Cooperative beamforming is an energy-efficient cooperative transmission technique that cophases multiple received signals to increase received power at the destination. With perfect synchronization, a deterministic mainlobe in the direction of the destination can be guaranteed for any distribution of nodes. However, the sidelobes appear to be probabilistic in other directions. A high-power-level sidelobe may cause an unacceptable interference at an unintended receiver, thereby decreasing network capacity. In this paper, we propose a multi-relay selection scheme to control the sidelobes in cooperative beamforming systems. An optimization problem is formulated to minimize the average power over all unintended directions with a constraint of unit power gain pointing to the destination. To solve the problem efficiently, we propose a suboptimal solution that first finds the best reference relay and then selects the remaining relays accordingly. Simulation results show that the proposed multi-relay selection algorithm has lower average power over all unintended directions than both the nearest- and farthest-relays cases, where the performance is close to that of the exhaustive search approach.
    相関连結: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83667
    显示于类别:[電機工程學系] 會議論文
    [通訊工程研究所] 會議論文
    [電腦與通訊科技研發中心] 會議論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML1075检视/开启


    在NTHUR中所有的資料項目都受到原著作權保護,僅提供學術研究及教育使用,敬請尊重著作權人之權益。若須利用於商業或營利,請先取得著作權人授權。
    若發現本網站收錄之內容有侵害著作權人權益之情事,請權利人通知本網站管理者(smluo@lib.nthu.edu.tw),管理者將立即採取移除該內容等補救措施。

    SFX Query

    與系統管理員聯絡

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈