利用有不确定性的不同混沌系统的实际同步实现必威体育官网网址通讯.pdfVIP

利用有不确定性的不同混沌系统的实际同步 实现必威体育官网网址通讯 蔡建平 林美丽 （漳州师范学院数学系 漳州 363000 ） 摘要 利用自适应控制技术设计合适的控制器实现有不确定性的两个耦合的不同混沌 系统的同步。实现同步后，隐藏在混沌信号中发送到接收方的信息信号可以被成功恢 复。有不确定的不同混沌系统作为通讯的发送和接收方有更高的安全性。数值仿真算 例验证本文方法的有效性。 关键词 混沌同步，必威体育官网网址通讯，自适应控制，不同混沌系统 Secure communication using practical synchronization between two different chaotic systems with uncertainties * Jianping Cai , Meili Lin (Department of Mathematics, Zhangzhou Normal University, Zhangzhou 363000, China) * Corresponding author. Email address: mathcai@ Abstract Adaptive control technique is used to design suitable controllers to synchronize two coupled different chaotic systems with uncertainties. The information signal hidden in chaotic signal is transmitted and then successfully recovered at the receiver once synchronization is achieved. Different chaotic systems with uncertainties as the transmitter and the receiver ensure higher security in communication. Numerical simulation examples verify the effectiveness of the proposed method. Keywords chaos synchronization, secure communication, adaptive control, different chaotic systems 1. INTRODUCTION Chaos synchronization has been widely investigated for its advantages in practical applications, particularly in secure communication [1-3]. The process of secure communication via chaos synchronization is outlined as follows. Firstly, the information signal is added to a much stronger chaotic signal in order to hide the information in transmitter. Secondly, the generated chaotic signal containing the information is transmitted to receiver. Finally, the information signal can be recovered successfully if synchronizati