一种提高超宽带无线系统干扰容限的方法  

A Method to Raise the Interference Tolerance Margin of UWB System

作　　者：熊海良[1] 易克初[2] 王勇超[2] 张杰[3] 

机构地区：[1]山东大学信息科学与工程学院,山东济南250100 [2]西安电子科技大学综合业务网国家重点实验室,陕西西安710071 [3]英国谢菲尔德大学电子与电气工程学院

出　　处：《电子学报》2012年第10期1943-1947,共5页Acta Electronica Sinica

基　　金：山东大学自主创新基金(No.2011GN063);国家自然科学基金(No.61071122)

摘　　要：超宽带无线电系统常常因窄带干扰强度超出其干扰容限而无法正常工作,自适应陷波技术可大幅度提升其干扰容限.但在超宽带接收机中,实现高阶陷波非常困难,常规方法复杂度高、稳定性差、难于收敛.本文提出一种时分复用并行高阶自适应陷波方法,能同时快速跟踪并有效滤除一个或多个窄带强干扰,使系统干扰容限大幅度提升,且稳定性好、收敛快、对有用信号损伤小.理论分析与仿真结果验证了其优越性,且具有重要应用价值.UWB（Ultra Wideband） radio system is easily affected by slrong narrow band interference. Traditional interference suppression methods using adaptive notch filter as a preprocessing unit cart hardly be used due to high sampling speed in UWB re ceivers.In this paper, we proposed a novel parallel notch filter based on TDM （Time-division multiplexing） technique, which can effectively track and e ＂hminate multi-band interference, and extremely raise the interference tolerance margin of the UWB wireless communication system when it＇is used as a preprocessing unit before dispreading. Moreover, the filter structure has such advantages as good stability,high convergence speed,low signal distortion. The numerical results validated the expected performance and prop erties.

关 键 词：超宽带 时分多路 干扰 自适应 

分 类 号：TN92[电子电信—通信与信息系统]