一种新的混沌同步及保密通信方式

A New Chaotic Synchronization and Secure Communication Method

本文提出一种新的混沌同步及保密通信方式。在发送端，将信息信号与混沌载波的和经取模运算后再嵌入混沌动力系统的迭代之中以实现调制；在接收端，用一个相应的非动力学系统从接收信号中提取混沌载波并进而恢复信息信号。研究表明，该混沌同步方式具有较强的抗干扰能力并且实现容易；该保密通信系统保密性能良好。

In this paper, a new chaotic synchronization and secure communication method is proposed. In the transmitter, the modulation is realized by adding the information signal to a chaotic carrier, taking a modular operation on the sum, and embedding the result of the modular operation in the iteration of the chaotic dynamical system. In the receiver, the chaotic carrier is retrieved from the received signal by using a corresponding non dynamical system and then the information signal is recovered. The results of our study show that the chaotic synchronization method has the good immunity to interference and can be realized easily. It is also showed that the chaotic secure communication system is fine in security.