基于LMS算法的自适应组合滤波器-外文翻译.doc

文档介绍：:..CombinedAdaptiveFilterwithLMS-BasedAlgorithmsAbstract:-,:Adaptivefilter,binedalgorithm,Biasandvariancetrade-,aswellasinmanypracticalproblems,[1,2].(LMS)adaptivealgorithmanditsmodifications(LMS-basedalgorithms).TheLMSissimpleforimplementationandrobustinanumberofapplications[1-3].However,eptablemanner,therehavebeenmanyattemptstoimproveitsperformancebytheappropriatemodifications:signalgorithm(SA)[8],geometricmeanLMS(GLMS)[5],variablestep-sizeLMS(VSLMS)[6,7].EachoftheLMS-basedalgorithmshasatleastoneparameterthatshouldbedefinedpriortotheadaptationprocedure(stepforLMSandSA;LMS;variousparametersaffectingthestepforVSLMS).Theseparameterscruciallyinfluencethefilteroutputduringtwoadaptationphases:--,binationofseveralLMS-basedFIRfilterswithdifferentparameters,-basedalgorithms,-=[x(k)x(k-1)••-x(k- +1)]7andvectorofweightingcoefficientsasWk=[W{}