双极性CSK混沌通信系统多用户噪声性能分析

基于离散混沌信号，提出一种在AWGN(additive white Gaussian noise)环境中双极性相干CSK(chaos shift keying)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，获得了用信噪比、用户数及比特序列长度表示的误码率(BER)表达式，单用户情况下的BER和噪声性能上界是该文结果的特例。理论计算与仿真结果相符，并对两者的差异进行了分析。

Error performance analysis of antipodal chaos-shift-keying system under a noisy multiuser environment

Based on discrete chaotic signals, an approach to calculating the noisy performance of the antipodal chaos-shift-keying system with a coherent correlator under a AWGN and multiuser environment is presented. Using a Logistic map as the chaos generator, the BER is derived in terms of the signal-to-noise ratios, the number of users and the length of bit sequence. The BER and its upper bound for single-user systems are the special cases of this paper. The calculated BERs are consistent with those found from simulations. In addition, the differences between calculated BER and its simulations are analyzed in this paper.