摘要
利用相空间多次重构的混沌映射,为相干方式的混沌数字通信问题提供一种解决方案。新映射产生的混沌码序列性能更加优异,自相关性明显改善,最大Lyapunov指数由0.697增加到5.545,复杂度也明显提高。仿真证实,利用新的混沌映射,提高了系统抗多址性能。基于新映射混沌码良好的相关性能和抗多址性能,设计了一种滑膜相关峰检测同步法,完成离散混沌系统同步,实现相干方式混沌数字通信。
Aiming at the problems in coherent chaotic digital communication,this paper provided a solution using the phase space multiple reconstracted map. The performances of chaotic codes generated by new map were better then before. The correlation and the complexity were all improved. And the maximum Lyapunov exponent increased from 0. 697 to 5. 545. Calculation and simulation show that with the new chaotic map,it promotes the capability of anti-multiple access interfer. Basing on the outstanding correlation performance and the good anti-multiple access capability of this new chaotic codes,this paper designed the sliding mode correlation peaks detection method to achieve synchronization of two discrete chaotic systems. It achieved eventually the coherent chaotic digital communication system.
作者
万康
谢绍斌
周双
Wan Kang;Xie Shaobin;Zhou Shuang(Institute of Information & Navigation, Air Force Engineering University of PLA , XV an 710077 , China)
出处
《计算机应用研究》
CSCD
北大核心
2016年第9期2782-2785,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61202490)
航空科学基金资助项目(20BZC15008)
关键词
混沌
相干
相关峰检测
同步
chaos
coherent
correlation peaks detection
synchronization
