基于AWGN信道的多输入CDSK混沌通信系统性能分析

Performance Analysis of Multiple Input CDSK Chaotic Communication System Based on AWGN Channel

在分析高斯白噪声信道(AWGN)环境的基础上,提出了一种用于对抗信道衰落的多输入CDSK混沌通信系统。该系统在发射端设置多天线,为接收机提供多个独立衰落的副本;根据传输信道间时延的不同,接收机对传输信号采用不同的检测方法。理论分析和仿真实验表明:与单输入单输出CDSK系统相比,多输入CDSK系统能够获得分集增益,降低传输误码率。

Based on the analysis of AWGN environment, a Multiple Input CDSK chaotic communication system used to combat the channel fading was proposed. In this system, the transmitter had multiple antennas and delivered multiple copies of independent fading. According to the time delay between transmission paths the receiver detect the received signal in different ways. Theoretic analysis and simulation indicate that compared with the Single Input CDSK system, Multiple Input CDSK could obtain the diversity gain and has the better BER performance.