淡江大學機構典藏:Item 987654321/82994
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 63993/96714 (66%)
造访人次 : 3630069      在线人数 : 432
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/987654321/82994


    题名: Bit Error Rate Reduction by Smart UWB Antenna Array in Indoor Wireless Communication
    作者: Chiu, Chien-Ching;Chen, Chien-Hung;Liao, Shu-Han;Chen, Kuan-Chung
    贡献者: 淡江大學電機工程學系
    关键词: UWB;Genetic Algorithm;BER;Feed Length;Circular Antenna Array;SBR/Image
    日期: 2012-06
    上传时间: 2013-03-13 03:04:33 (UTC+8)
    出版者: Tamkang University
    摘要: In this paper, a new ultra wideband circular antenna array (UCAA) combining genetic algorithm to minimize the bit error rate (BER) is proposed. The ultra wideband (UWB) impulse responses of the indoor channel for any transmitter-receiver location are computed by applying shooting and bouncing ray/image (SBR/Image) techniques, inverse fast Fourier transform and Hermitian processing. By using the impulse response of multipath channel, the BER performance of the binary pulse amplitude modulation (B-PAM) impulse radio (IR) UWB system with circular antenna array can be calculated. Based on the topography of the antenna and the BER formula, the array pattern synthesis problem can be reformulated into an optimization problem and solved by the genetic algorithm. Our approach is not only choosing BER as the object function instead of sidelobe level of the antenna pattern, but also considering the antenna feed length effect of each array element. The strong point of the genetic algorithm is that it can find out the solution even if the performance index cannot be formulated by simple equations. Simulation results show that the synthesized antenna array pattern is effective to focus maximum gain to the LOS path which scales as the number of array elements. In other words, the receiver can increase the received signal energy to noise ratio. The synthesized array pattern also can mitigate severe multipath fading in complex propagation environment. As a result, the BER can be reduced substantially in indoor UWB communication system.
    關聯: Journal of Applied Science and Engineering 15(2), pp.139-148
    DOI: 10.6180/jase.2012.15.2.07
    显示于类别:[電機工程學系暨研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    Bit Error Rate Reduction by Smart UWB Antenna Array in Indoor Wireless Communication.pdf3153KbAdobe PDF157检视/开启
    index.html0KbHTML322检视/开启
    index.html0KbHTML317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