淡江大學機構典藏:Item 987654321/82994
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 63996/96717 (66%)
Visitors : 3629244      Online Users : 416
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/82994


    Title: Bit Error Rate Reduction by Smart UWB Antenna Array in Indoor Wireless Communication
    Authors: Chiu, Chien-Ching;Chen, Chien-Hung;Liao, Shu-Han;Chen, Kuan-Chung
    Contributors: 淡江大學電機工程學系
    Keywords: UWB;Genetic Algorithm;BER;Feed Length;Circular Antenna Array;SBR/Image
    Date: 2012-06
    Issue Date: 2013-03-13 03:04:33 (UTC+8)
    Publisher: Tamkang University
    Abstract: 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.
    Relation: Journal of Applied Science and Engineering 15(2), pp.139-148
    DOI: 10.6180/jase.2012.15.2.07
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

    Files in This Item:

    File Description SizeFormat
    Bit Error Rate Reduction by Smart UWB Antenna Array in Indoor Wireless Communication.pdf3153KbAdobe PDF156View/Open
    index.html0KbHTML322View/Open
    index.html0KbHTML317View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


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