一种基于混沌序列相关同步的DS-CDMA通信系统  

A DS-CDMA communication system based on correlation chaotic synchronization

作　　者：王玫[1] 焦李成[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室

出　　处：《通信学报》2002年第8期121-127,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(69772029);广西青年科学基金资助项目(9912011)

摘　　要：本文介绍了一种基于混沌序列相关问步的DS-CDMA通信系统,其核心就是以混沌序列作为地址码,利用混沌序列优越的相关特性进行相关解调。文中推导出了多用户相关解调的表达式,表明在系统同步的前提下,系统性能取决于混沌序列的相关性。文中还讲述了系统构成方法以及相关同步检测和相关解调的原理,最后给出的计算机仿真结果证明了上述原理的正确性。A CDMA chaotic communication system using correlation chaotic synchronization is given. In this system, the chaotic sequences are used as address codes and the demodulation is achieved by excellent correlation characteristic of chaotic sequences. The expression of correlative demodulation for the chaotic CDMA systems have been developed which show that the systemic performances depend mainly on the correlation of chaotic sequences. The constituted method of the system, synchronization, modulation and demodulation are discussed and demonstrated by a simulation example.

关 键 词：混沌序列相关同步 DS-CDMA 通信系统 混沌通信 计算机仿真 直接扩频序列 码分多址 移动通信 

分 类 号：TN929.533[电子电信—通信与信息系统]