结合信噪比的双门限干扰抑制算法的改进  

Improved double threshold interference suppression algorithm combined with signal-to-noise ratio

作　　者：张鹏[1] 梁光明[2] 刘任任[1] 刘东华[2] 

机构地区：[1]湘潭大学信息工程学院,湖南湘潭411105 [2]国防科学技术大学军事通信工程系,湖南长沙410073

出　　处：《现代电子技术》2013年第5期1-5,共5页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60673193)

摘　　要：针对双门限窄带干扰抑制算法在直接序列扩频/跳频(DS/FH)混合通信系统中,强信噪比情况抗干扰能力差的问题,提出了一种结合信噪比的DS/FH通信系统双门限干扰抑制算法。该算法推导了信噪比与门限系数的关系,通过不同信噪比动态改变双门限系数,再结合簇的思想,抑制窄带干扰。仿真结果表明,该算法能有效抑制基于扩跳频混合系统的不同信噪比情况下的窄带干扰。For the poor anti-jamming capability of strong SNR of the dual threshold narrowband interference suppression al- gorithm in direct sequence spread spectrum/frequency hopping （DS/FH） hybrid communication system, DS/FH communication system is a combination of SNR and dual threshold algorithm. The relationship between SNR and threshold factor is deduced from the algorithm. By changing the dual-threshold factor dynamically using different SNR and combined with the ideas of clus- ter, narrowband interference is suppressed. Simulation results show that dual-threshold algorithm can effectively suppress narrow- band interference in the case of different SNR of DS/FH hybrid communication system.

关 键 词：DS FH 信噪比 双门限 门限系数 

分 类 号：TN911.34[电子电信—通信与信息系统]