摘要
提出了一种适合于时变信道增益的单耦合蔡氏电路多级混沌通信方法 ,该方法把信道增益的变化归结为在信道中存在一等效时变电阻 ,并将该电阻作为同步蔡氏电路的耦合电阻。在接收端 ,通过信道上的电流判断收发系统是否达到混沌同步。理论分析和模拟结果表明单耦合蔡氏电路在时变信道增益时仍然可以实现混沌同步 。
This paper presents a new method of chaotic communicaion based on multistage Chua’s circuits with time-varying channel gain In this method,the variation of channel gain is attributed to an equivalent time-varying resistor that exists in channel Here,this resistor is regarded as coupling resistor between two Chua’s circuits At receiving end,chaos synchronization of transmitting and receiving system is judged by using current in channel Simulation results show that chaos synchronization of two Chua’s circuits can be achieved when the channel is in time-varying gain Then a multistage chaotic synchronized system for secure communication with time-varying channel gain is given by using parameter modulation
出处
《空军工程大学学报（自然科学版）》
CSCD
2001年第3期73-76,共4页
Journal of Air Force Engineering University(Natural Science Edition)
关键词
混沌通信
蔡氏电路
时变信道
chaotic communication
chua’s circuits
time-varying channels
