基于状态反馈的混沌参数调制解调方法  

Chaos parameter modulation and demodulation method based on state feedback

作　　者：汪亮[1] 山秀明[1] 任勇[1] 尹逊和[1] 刘锋[1] 夏永祥[1] 

机构地区：[1]清华大学电子工程系微波与数字通信技术国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第1期23-25,共3页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目 ( 6 0 172 0 2 3)

摘　　要：混沌由于其内秉随机性而适于在保密通信中应用。混沌掩盖、混沌键控、混沌参数调制、混沌符号序列扩频是混沌在通信中的应用研究的 4大热点。该文主要研究混沌参数调制与解调 ,把混沌参数作为一个状态变量 ,并采用状态反馈方法实现混沌同步与参数解调。用这种方法实现的混沌通信系统具有调制效率高 ,保密性好的特点 ,特别适用于保密通信。以蔡氏电路为基础构造了混沌参数调制与解调系统 ,仿真结果表明Chaos is suitable for private communication because of its intrinsic stochastic property. Chaos Masking, Chaos Shift Keying, Chaos Parameter Modulation and Chaos Symbol Sequence Spectrum Spreading are currently the four most interesting chaos applications in communication. This article analyzes chaos parameter modulation and demodulation. Each chaos parameter is analyzed as a state variable with chaos synchronization and parameter demodulation achieved by state feedback. Chaotic communication systems using this method have high frequency efficiency and are suitable for security communication applications. A chaos parameter modulation and demodulation system was then designed based on Chua's circuit. Simulation shows that this method is efficient.

关 键 词：混沌同步 混沌参数调制解调 状态反馈 保密通信 混沌控制 混沌动力学系统 

分 类 号：TN918.61[电子电信—通信与信息系统]