Synchronization of Three Identical Systems and Its Application for Secure Communication with Noise Perturbation

In this paper, a global chaos synchronization scheme of three identical systems is investigated. By choosing proper coupling parameters, the states of all the three systems can be synchronized. Then this method was applied to secure communication through chaotic masking, used three coupled identical systems, propose a novel method of chaos encryption, after encrypting in the previous two transmitters, information signal can be recovered exactly at the receiver end . In consideration of interfering random white noise, the results of encoding and decoding are simulated and analyzed for the multistage chaos synchronized system. Analyzes the characteristics of noise and then presents a de-noising method using wavelet transform. With the Matlab, the effects of signal de-noising could be demonstrated.