ASIA unversity:Item 310904400/8586
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 90120/105278 (86%)
造访人次 : 8895026      在线人数 : 764
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU 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


    题名: Combined fuzzy-based rate management and selective power control for multimedia CDMA cellular systems
    作者: Chen, YL (Chen, Young-Long);Wang, JW (Wang, Jyu-Wei);Lin, YS (Lin, Yung-Sheng);Wen, JH (Wen, Jyh-Horng)
    贡献者: Department of Computer and Communication Engineering
    关键词: QoS;transmission rate;power control;FLC;SIR;MOBILE SYSTEMS;RADIO SYSTEMS;PERFORMANCE;LOGIC
    日期: 2008-08
    上传时间: 2010-03-26 11:06:01 (UTC+8)
    出版者: Asia University
    摘要: Power control mechanisms are essential for CDMA wireless communication systems to enhance user capacity. In this paper, we propose a novel power control scheme which combines transmission rate management with power adjustments for multimedia CDMA cellular systems. In the proposed scheme, a fuzzy logic controller (FLC) is first used to dynamically infer a suitable transmission rate for each service. Then a selective power control (SPC) scheme is used to adjust the transmission power for each service in order to maintain an acceptable signal-to-interference ratio (SIR). Numerical results show that the proposed scheme outperforms the original SPC and the Lagrangian relaxation technique and power control (LRPC) methods in outage probability, average transmission rate, probability of unsuccessful transmission, and probability of changes in transmission rates.
    显示于类别:[光電與通訊學系] 期刊論文


    档案 描述 大小格式浏览次数
    298.doc35KbMicrosoft Word634检视/开启


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