直扩系统中基于小波包变换的自适应窄带干扰抑制技术  

Adaptive Narrowband Interference Suppression Based on Wavelet Packet Transform in DSSS Communication System

作　　者：郭文飞[1] 缪学宁[1] 张友爱[1] 

机构地区：[1]武汉船舶通信研究所,武汉430079

出　　处：《舰船电子工程》2008年第4期69-72,共4页Ship Electronic Engineering

摘　　要：利用小波包变换进行抑制的算法进行分析,将小波包分解与自适应滤波技术结合起来,对受扰子带采用改进的LMS自适应算法进行滤波处理,有效弥补了有用信号的损失,提高了系统性能,并给出仿真性能的比较。To suppress the narrowband interference in the DSSS systems, wavelet packet excision algorithm is analyzed and revised to a new algorithm, which compensates the useful signal successfully with LMS adaptive filter. The result of computer simulation is shown in the article, from which we can see the performance of the system is improved.

关 键 词：直接序列扩频 窄带干扰 小波包变换 自适应滤波器 最小均方误差 

分 类 号：TN914.42[电子电信—通信与信息系统]