差分混沌相移键控通信系统的改进

摘要

In order to further improve the bandwidth efficiency of the chaotic communication system,the existing differential chaos shift keying modulation（DCPSK） on the basis of the increase of the reference signal after the transfer of information bearing segments,each symbol of the improved（three chaotic signal segments） the transmission 2log2M bit information to improve the information transfer rate.Its BER performance simulation shows the BER performance is slightly worse than DCPSK.%为了进一步的提高混沌通信系统的频带利用率,本文在已有的差分混沌相移键控调制（DCPSK）的基础上,增加参考信号段后所传信息承载段,改进后每个符号（三个混沌信号段）传送2log2M比特的信息,提高了信息传输速率。通过对其误码性能仿真可知,其误码性能比DCPSK略差。