A Novel Chaos Synchronization Method And Its Application To Chaotic Secure Communication System

The author researches on a novel chaos synchronization method and its application to chaos secure communication system in this paper.The development and significance of chaology are introduced firstly. The general requirement of communication system and the application potential in secure communication are expatiated. The chaotic secure communication methods home and abroad are also summarized, including chaos spread spectrum communication, chaos key-shifting, chaos parameter modulation, chaos masking, chaos CDMA. The exiting problems and development direction are also pointed out respectively.The features of existing chaos synchronization methods are analyzed. A novel chaos synchronization method is presented, which has the following advantages: synchronization can be realized for not only alike-structure chaos system but also different-structure chaos system, not only applying to continuous system but also to discrete system, it is not necessary to consider the initial conditions in synchronization, and no necessary to calculate conditionally Lyapunov exponent.A lot of simulation results indicate the effectiveness of the method.The novel chaos synchronization method is then applied to chaos masking secure communication system and simulation is performed. Many simulations indicate the validity of the method.