直扩信号多窄带干扰的自适应抑制系统设计  

Realization of Adaptive Suppression of Narrow-Band Interferences in Direct Sequence Spread Spectrum Signal Using Decision Feedback

作　　者：华云[1] 龚耀寰[1] 陈巧玲[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《系统工程与电子技术》2002年第6期32-35,共4页Systems Engineering and Electronics

基　　金：抗干扰通信国防科技重点实验室资助课题 (98JS0 4 7 1 DZ0 2 0 9)

摘　　要：在军事通信中 ,直扩技术由于其诸多优点而获得了广泛的应用。在直扩通信系统中 ,使用自适应干扰对消技术是对抗各种人为干扰的一种非常有效的手段。讨论了使用判决反馈技术实现直序扩频信号中多窄带干扰的自适应抑制算法 ,论述了算法原理 ,给出了算法参数选取的依据和计算机仿真结果 ,并详细叙述了基于TMS32 0C6 2 0Direct sequence spread spectrum (DS SS) technique has been widely used in military communications systems. In DS SS communications systems, adaptive interference cancellation is a very useful method to suppress all kinds of jammers. We discuss the realization of adaptive suppression of narrow band interferences in direct sequence spread spectrum signal using decision feedback algorithm and present the computer simulation results. Moreover, we describe in detail the hardware implementation of the narrow band interference adaptive suppression system which is based on TMS320C6201.\;

关 键 词：直序扩频信号 判决反馈 窄带干扰 自适应干扰抑制 

分 类 号：TN914.4[电子电信—通信与信息系统]