基于自适应同步的混沌调制保密通信  

Secure Communication of Chaotic Modulation Based on Adaptive Synchronization

作　　者：瞿少成[1] 龚美静[1] 王晓燕[1] 

机构地区：[1]华中师范大学信息技术系,武汉430079

出　　处：《计算机工程》2009年第13期120-121,165,共3页Computer Engineering

基　　金：高等学校博士学科点专项科研基金资助项目(20070511017)

摘　　要：针对基于参数调制的自适应混沌保密通信问题,设计一种自适应混沌响应系统,将信息信号调制到混沌系统的某个参数中,通过构造自适应参数辨识与单个自适应控制器,实现混沌系统的同步与参数估计。在接收端,通过构造非线性滤波器,使信息信号有效恢复,实现保密通信。仿真结果表明,该系统同步性较好,解调信号逼近于信息信号,具有较强的保密性。Aiming at the problem of adaptive chaos secure communication based on parameter modulation, information signals are used to modulate some parameter of a chaotic system in the master system, an adaptive salve system is designed by structuring adaptive parameter identification and single adaptive controller, it realizes chaos synchronization and parameter estimation effectively. The proper nonlinear filter is designed in the receiving terminal to make the information signals recover effectively, realizing the secure communication. The simulation results show that chaos synchronization is effective, and the recovered signals are close to the information signals, it possesses strong confidentiality. The controller is simple and it is easy to implement in engineering.

关 键 词：自适应同步 参数调制 保密通信 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]