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-  2018 

基于MIMO的IDCSK保密通信系统性能分析 Performance analysis of IDCSK secure communication in MIMO systems

Keywords: 非相干混沌系统,多输入多输出,改进型差分混沌键控,性能分析

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Abstract:

给出了MIMO环境下改进型差分混沌相移键控(MIMO-IDCSK)通信系统的设计方案,并对系统性能进行了分析.传统的DCSK系统需要2个时间片分别发送混沌参考信号和数据承载信号,在IDCSK系统中,利用时间反转操作产生和数据承载信号正交的参考信号,然后对2路信号在1个时间片内进行求和、发送.改进方案把比特间隔缩短了一半,使得数据传输速率提高了1倍,并提高了频谱利用率.仿真结果显示:和传统DCSK通信系统相比,新型MIMO-IDCSK保密通信系统的性能更为优越,与理论分析相符

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