English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 60926/93619 (65%)
造访人次 : 1256987      在线人数 : 7
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU 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


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/120875


    题名: 3D Beamforming Techniques for Indoor UWB Wireless Communications
    作者: Chien, W.;Xu, J. X.;Chiu, C. C.;Cheng, Y. T.;Lee, Y. L.
    日期: 2019-04-26
    上传时间: 2021-06-15 12:10:22 (UTC+8)
    摘要: The main research in this paper is an ultra-wideband (UWB) three-dimensional (3D) circular antenna array and we highlight the importance of elevation angles and their influence of the system performance. The 3D channel is calculated by 3D shooting and bouncing ray/image techniques which specify multipath elevation angles and azimuth for horizontal plane angles. The capacities of the two-dimensional (2D) and three-dimensional transmitting antenna arrays have been presented. Beam-synthesizing techniques are used at the transmitter to focus the transmitter energy for reducing the multi-path effect and increasing channel capacity. Asynchronous Particle Swarm Optimization (APSO) methods are used to adjust the length of the feed line on each array element for maximizing the capacity. The higher directive gain obtained from the 3D antenna arrays results in high channel capacity compared to 2D azimuth-only antenna arrays. It is found the capacity for the 3D array increases more than 10% compared to that for the 2D array. Our research not only provides qualitative results, but also provides quantitative results.
    DOI: 10.1109/ICIASE45644.2019.9074048
    显示于类别:[電機工程學系暨研究所] 會議論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML32检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

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