非理想信道下Colpitts混沌电路的自适应同步研究  

Adaptive synchronization of chaotic Colpitts circuit under non-idea channel

作　　者：史治国[1] 冉立新[1] 陈抗生[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《电路与系统学报》2006年第4期116-120,共5页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60201001)

摘　　要：本文研究了Colpitts混沌电路在非理想信道条件下的自适应同步问题。引入自适应控制器对输入到响应部分(responsesystem)的衰变混沌信号进行预处理,来补偿衰落信道对于同步性能的影响。给出了系统的数学模型,对恒定信道衰变和时变信道衰变两种非理想信道条件下的混沌Colpitts电路的自适应同步进行了数值仿真研究。仿真结果表明,对于恒定或慢变化的时变信道衰变,自适应控制器可以有效的提高Colpitts电路响应部分和驱动部分(Drivesystem)的同步性能。The aim of this paper is to investigate the synchronization of chaotic Colpitts circuit under non-idea channel. The basic idea is to introduce an adaptive controller to compensate the received distorted signal before it is injected into the response system. The mathematic model of synchronization configuration is described, and numeric simulations are conducted to evaluate the synchronization performance when the adaptive controller is employed with constant and time-variant channel distortion considered. Simulation results indicate that with adaptive controller synchronization performance between the drive and response system of the chaotic Colpitts circuit pair can be significantly improved under constant and slow varying channel distortion.

关 键 词：Colpitts电路 自适应同步 混沌同步 

分 类 号：TN702[电子电信—电路与系统] TN710.1