基于自適應算法的回聲抵消技術研究.pdf

1、沈陽理工大學碩士學位論文基于自適應算法的回聲抵消技術研究姓名：楊陽申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：李環(huán)201203AbstractWimmerapiddevelopmentofmecoⅡm1吼icationtechn010跚moreandmoreequipmentspro們dehallds骶e劬ction，suchasvideocon量。reIlcebasedonVolrcomm瑚ication住IChnolo鼢tel印

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3、ho，tnellistonrandcu盯鋤tstatusofmeresearchforedlocaIlcellationtechIlologyandmeresearchfor‰prindplesoftheech0c趾celler‰meo巧ofmeech0cancellatlonlncommullicationsyst鋤isresearchedfirst，thenthealgorimmsofeaChmodules1nechocancdle

4、rareresearched，especiallythejEilteralgorithm，Ⅱleste印estdescentBLMSadaptiVealgorithms11heLMScoreadaptivejcihermodule，includingWieneralgorimm，LMS，NLMS，DLMS鋤dtheandNLMSa190rithmsaresimulated鋤daIlalyzedbyusingMatlabAccording

5、tomemeoreticalresearchandthes姍眥latlonar屺鋤alvSis，melellgmaIldtlleupda主est印sizeofmeechocaIlcellerbasedonF。PGAareselectedARermealgori廿11llissimulatedsucceSs甜lybyusingMatlab，thedesl印aIldimpl鋤entationofmeechocancellerbasedonF

6、PGAareresearchedAndthead印ttVefiltermodule趾dmer鋤otevoicedete鋤nmodulearedesi印edbyuslngQuams兒孤dⅧlogHDLm劬ctionofthead印tiVefi№module舭dtherenloteV01cedeteCtionmodllle、舳ch眥desi鏟edbyusingVerilogHDLissimulatedmQuamsllTheIlaccordi

7、ngtoITU—TG167，mead印tivejciltermoduleissi咖1latedbyusmgoua咖sIIaIldMatlabcosimulationapproachallditsperfom鋤ce1stested111ea1印甜Ⅱnusedin“sp叩erisDLMSwhichisbasedondelay’IheValueotmeDisnot1，wmchisdi儆entfomthecommonDLMSa190ri恤，in