一种改进的窄带干扰抑制算法  

An Improved Algorithm for Narrow-band Interference Suppression

作　　者：吴丹[1] 万达[2] 梁保卫[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]大连民族学院,辽宁大连116600

出　　处：《无线电通信技术》2012年第1期32-34,共3页Radio Communications Technology

摘　　要：针对窄带强干扰对直扩系统造成的严重影响,给出了变换域干扰抑制技术的实现原理框图;在分析传统N-SIGMA算法和中值滤波算法的基础性,提出了改进的中值滤波算法;最后,使用MATLAB对其干扰抑制能力及抑制前后误码性能进行仿真及比较分析,仿真及分析结果表明改进的中值滤波算法在性能上比传统方法有较大的提高,比N-SIGMA算法硬件实现简单,更具有工程推广价值。Aiming at the serious effect of narrow-band strong interference on DSSS system, the transform-domain interference suppression diagram is presented, and then an improved median filter algorithm is proposed based on analysis of N-SIGMA and traditional median filter algorithms. The capability of narrow-band interference suppression and BER performance of several algorithms are simulated and comparatively analyzed by MATLAB. The results of simulation and analysis show that improved median filter algorithm can improve significantly the performance of narrow-band interference suppression, compared with traditional algorithm, and be easier than N-SIGMA algorithm.

关 键 词：窄带干扰抑制 N-SIGMA算法 中值滤波算法 误码性能 

分 类 号：TN914[电子电信—通信与信息系统]