摘要
为了适应混沌通信系统的要求,提出一种改善混沌信号频谱特性的方法。现有混沌信号大多具有较大的低频和直流分量,针对分量对混沌通信会造成一定危害,可以通过对原有混沌动力方程输出信号的微分项中加入积分项来抑制两种分量。仿真结果表明,改进方法可以有效抑制混沌信号的低频和直流分量,帮助改善混沌信号的频谱特征。
In order to adapt to the requirements of the chaotic communication system, this paper presented a method of improving the characteristics of chaotic signal spectrum. Most existing chaos signals have a great low frequency and DC spectrum component, which are harmful to chaotic communication. A method was proposed to restrain these two components, an integration was added to the differential in the output signal of the original chaotic kinetic equation. The simulation results show that this method can effectively restrain the chaotic signal low frequency and DC spectrum component and improve the chaotic signal frequency spectrum characteristics.
出处
《计算机仿真》
CSCD
北大核心
2012年第12期157-161,共5页
Computer Simulation
基金
教育部科学技术研究重点项目(211037)
关键词
混沌通信
高维混沌
频谱特性
低频和直流分量抑制
Chaotic communication
High- dimensional chaos
Spectrum characteristics
Low frequency and DC spectrum component
