直扩通信中基于ATF算法的窄带干扰抑制技术优化  

An Optimization of NBI Rejection Based on ATF in DSSS

作　　者：李雪东[1] 张平华[1] 邓知辉[1] 

机构地区：[1]湖南信息职业技术学院信息工程系,长沙410200

出　　处：《信息通信》2009年第2期20-22,共3页Information & Communications

摘　　要：提出了一种直扩通信中基于ATF算法的窄带干扰抑制技术的优化方法。采用自适应滤波技术取代子带剔除法,自适应地跟踪窄带干扰,改善了有用信号的丢弃情况,有效地抑制了窄带干扰。仿真结果表明,该算法在性能上更优越,干扰定位速度更快,干扰抑制能力得到较大提高。An optimized adaptive time-frequency （ATF） method for suppressing the interference in Direct Sequence Spread Spectrum （DSSS） communication systems is put forward in this paper. The optimal adaptive NBI rejection arithmetic is proposed using the adaptive filter instead of sub-band excision, which suppresses NBI efficiently and impoves loss of the avail signal. Analysis and simulation results show that the interference suppression method of adaptive wavelet packet decomposition based on the ATF algorithm will obtain better performance than that of conventional sub-band elimination. Additionally, the orientation speed of the adaptive algorithm can be increased. NBI can be suppressed effectively.

关 键 词：直扩通信 ATF算法 窄带干扰 WPT 

分 类 号：TN722[电子电信—电路与系统]