多用户相干CSK数字通信系统的误码性能分析  

Error Performance Analysis of a Coherent Chaos-Shift-Keying Digital Communication System Under a Multiuser Environment

作　　者：王光义[1] 丘水生[1] 禹思敏[2] 

机构地区：[1]华南理工大学电信学院,广州510640 [2]广东工业大学自动化学院,广州510090

出　　处：《通信技术》2003年第10期13-16,共4页Communications Technology

基　　金：国家自然科学基金资助项目(69672022);教育部高校博士点学科基金(00056107);广州市科技发展项目资助。

摘　　要：基于离散混沌信号,提出一种在AWGN环境中双基函数相干CSK系统多用户噪声性能的分析方法。用Logistic映射作为混沌发生器,导出了用信噪比、用户数及比特序列长度表示的误码率(BER)表达式,理论计算与仿真结果相符。单用户情况下的BER和已提出的噪声性能上界是笔者所得结果的特例。Based on discrete chaotic signals,a n approach to calculating the noisy p erformance of a coherent chaos -shift -keying system with two basis f unctions under a AWGN and multiuser e nvironment is presented.Using a Log istic map as the chaos generator,the BER is deriv ed in terms of the signal -to -noise ra tios,the number of users and the length of bit se-quence,and the calculated BERs are c onsistent with those found from simu lations.In addition,the BER and its upon bound for single -user systems are the special results of this paper.

关 键 词：混沌通信 误码率 混沌键控 多用户 

分 类 号：TN91[电子电信—通信与信息系统]