Wavelet transform and genetic algorithm based multiuser detectors for asynchronous CDMA

被引：0
|
作者：
Lin, LL [1 ]
机构：
[1] Zhejiang GongShang Univ, Dept Informat & Elect Engn, Hangzhou 310035, Zhejiang Prov, Peoples R China
来源：
2005 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING PROCEEDINGS, VOLS 1 AND 2 | 2005年
关键词：
multiuser detection; wavelet transform; genetic algorithm; near-far resistance ability; direct-sequence code division multiple access;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
New methods for implementation of wavelet transform based multiuser detector (WTMUD) and wavelet-transform-and-genetic-algorithm based multiuser detector (WTGAMUD) are proposed for asynchronous direct-sequence code division multiple access (DS-CDMA) systems, respectively. Firstly, WTMUD is proposed which can reduce the computation complexity of inverting the correlation matrix, and ensure the bit-by-bit detection of desired users. WTMUDs' outperform their counterparts that do not incorporating wavelet transform on the aspects of BER performance, near-far resistance ability, and system capacity. Secondly, genetic algorithm (GA) is incorporated in WTMUD to further optimize its output, and so form the WTGANWD. Simulation results show that WTGAMUDs' with a medium population size can provide much better performance than WTMUDs' after only 3 to 5 generations evolution.
引用
收藏
页码：648 / 652
页数：5
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