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《外文翻译--- - 基于tms320vc5402的自适应fir滤波器的设计》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、附录AImplementationofAdaptiveFIRFilterBasedonTMS320VC5402WangXiaojuanZhangZe(DepartmentofAutomation,CollegeofSciencesofTechnology,InnerMongoliaUniversity,HohhotChina,)AbstractThearticleintroducedthedesignandimplementationoftheadaptiveFIRfilterbasedonDSP(DigitalSignalProcessor)
2、.Firstly,simulateexperimentoftheadaptiveFIRfilterstructureandalgorithmiscarriedoutbyMATLAB,andadaptivefilteringoftheinputsignaladdedGaussnoiseisperformed.Simulationwavesaregiven,andthereferencedatafortheDSPdesigningisprovided.Onthisfoundation,TMS320VC5402DSPchipisselectedast
3、hecenterprocessortodesignandimplementtheadaptiveFIRfilter.Thehardwaresystemdesignmodule,thesoftwaresystemdesignflowchartandtherelatedassemblycodearegiven.Theuniformityofsimulationresultsandmeasurementresultsandthefiltereffectissatisfied.Keywords:AdaptiveFIRfilter,TMS320VC540
4、2,LMSalgorithm.1IntroductionAdaptivefilteristheoneofthemodernfilter.Itisanimportantapplicationofadaptivesignalprocessingthatwasdevelopedinthe1940s.Adaptivefilterhasbeenusedwidelyinsystemidentification,noisecanceller,adaptivelineenhance,adaptiveequalizationofcommunicationchan
5、nel,linearpredication,adaptivearrayantennaandsoon.Adaptivefilterisoppositetofixedcoefficientsfilter.Duringdigitalsignalprocessing,anumberofunpredictablesignals,noisesortime-varyingsignalsoftenneedtoprocess,itisimpossibletoachieveoptimalfilteringforfixedcoefficientfilter,soad
6、aptivefiltermustbedesignedtotrackthechangeofsignalandnoise.TheuniquestructureandinstructionofTMS320VC5402DSPprovidetheconvenientconditionfordesigningadaptivefilter.2PrincipleofAdaptiveFilterAdaptivefilterconsistsoftwobasicparts:thefilterwhichappliestherequiredprocessingonthe
7、incomingsignalwhichistobefiltered,andanadaptivealgorithm,whichadjuststhecoefficientsofthatfiltertosomehowimproveitsperformance.Whenadaptivefilterisdesigned,theautocorrelationfunctionofsignalsandnoisescannotbeknowninadvance.Duringthefiltering,withtheautocorrelationfunctionofs
8、ignalsandnoiseschangingslowlyovertime,filtercanautomaticallyadaptandadjustt
