基于分岔参数调制的混沌数字通信系统

A chaotic digital communication system based on bifurcation parameter modulation

提出一种基于分岔参数调制的混沌数字通信系统 .在发端 ,用二进制数字信息对混沌吸引子进行分岔参数调制 ,使之输出具有不同分岔参数的双涡卷和单涡卷混沌信号 ,分别代表数字 1和数字 0 .在收端 ,按相关接收原理解调出原信号 .根据驱动 响应法实现收发混沌的同步 ,对同步的原理进行了数学分析 .在此基础上设计硬件实验电路 ,进行电路仿真和硬件实验 ,给出了实验结果 .

A chaotic digital communication system via bifurcation parameter modulation is presented. In the transmitter, bifurcation parameters of chaotic attractor are modulated using binary digital information. The double scroll attractor and single scroll attractor are transmitted, which possess two different bifurcation parameters and represent digital 1 and 0 respectively. In the receiver, information is demodulated according to the principle of coherent demodulation. Synchronization between receiver and transmitter is obtained based on the method of driving response. The principle of synchronization is mathematically analyzed, on the basis of which circuit simulation and hardware experiment are demonstrated and results are given.