中文摘要：

码复用差分混沌移位键控（code-shifted differential chaos shift keying,CS-DCSK）是一种DCSK的改进方案,其消除了接收机的延时电路,简化了系统实现。为了研究在一般化的多径衰落信道下的性能,基于高斯近似（Gaussianapproximation,GA）方法分析了CS-DCSK在Nakagami-m衰落信道下的误比特率（bit error rate,BER）性能,给出了BER的数值积分解。计算机仿真验证了分析结果,比较了不同信道参数m条件下的误比特率性能,并分析了原因。

英文摘要：

The code-shifted differential chaos shift keying（CS-DCSK） is an improved scheme of DCSK, which eliminates the delay circuits in receiver. It simplifies the implementation of system. For the study of the performance of CS-DCSK over the generalization multipath fading channels, based on Gaussian approximation （GA） the BER performance is analyzed o- ver Nakagami-m fading channel. The expression of bit error rate（BER） is presented. Simulation results and numerical re- suits show that the analyzed results are well consistent with the simulation results. And the BERs of different channel pa- rameter m are compared and the reasons are analyzed.