Theoretical performance for asynchronous multi-user chaos-based communication systems on fading channels

被引：32
|
作者：
Kaddoum, Georges [1 ,2 ]
Coulon, Martial [2 ]
Roviras, Daniel [3 ]
Charge, Pascal [4 ]
机构：
[1] Univ Quebec, LACIME Lab, ETS, Montreal, PQ H3C 1K3, Canada
[2] Univ Toulouse, IRIT Lab, F-31071 Toulouse, France
[3] CNAM Paris, LAETITIA Lab, F-75003 Paris, France
[4] Univ Toulouse, LATTIS Lab, F-31077 Toulouse 4, France
来源：
SIGNAL PROCESSING | 2010年 / 90卷 / 11期
关键词：
Chaos-based communications; Energy distribution; Rice distribution; Analytical BER expression; Multi-user; DS-CDMA SYSTEMS; SYNCHRONIZATION; RECEIVERS;
D O I：
10.1016/j.sigpro.2010.04.013
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we present a study of the bit error rate (BER) performance of chaos-based DS-CDMA system over an m-distributed fading channel. In this system, the perfect synchronization between receiver and transmitter is assumed. The transmitted bit energy after spreading by chaotic signal is not considered as constant in order to evaluate with precision the BER for such system. The performance of chaos-based DS-CDMA system is examined first in mono-user case. An approximation of the received bit energy by a known distribution leads to an accurate analytical BER expression. This BER computation approach is generalized for asynchronous multi-user case. The performance of DS-CDMA system using Gold sequence is compared and discussed to chaos-based DS-CDMA system. A perfect match between simulations and analytical BER expressions confirms the exactitude of our approach. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2923 / 2933
页数：11
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