数字滤波器设计译文原文学士学位论文.doc

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1、重庆大学本科学生毕业设计（论文）附件附件D：FPGAIMPLEMENTATIONOFDIGITALFILTERSChi-JuiChou,SatishMohanakrishnan,JosephB.EvansTelecommunications&InformationSciencesLaboratoryDepartmentofElectrical&ComputerEngineeringUniversityofKansasLawrence,KS66045-2228ABSTRACTDigitalfilter

2、ingalgorithmsaremostcommonlyimplementedusinggeneralpurposedigitalsignalprocessingchipsforaudioapplications,orspecialpurposedigitalfilteringchipsandapplication-specificintegratedcircuits(ASICs)forhigherrates.Thispaperdescribesanapproachtotheimplementati

3、onofdigitalfilteralgorithmsbasedonfieldprogrammablegatearrays(FPGAs).TheadvantagesoftheFPGAapproachtodigitalfilterimplementationincludehighersamplingratesthanareavailablefromtraditionalDSPchips,lowercoststhananASICformoderatevolumeapplications,andmoref

4、lexibilitythanthealternateapproaches.SincemanycurrentFPGAarchitecturesarein-systemprogrammable,theconfigurationofthedevicemaybechangedtoimplementdifferentfunctionalityifrequired.OurexamplesillustratethattheFPGAapproachisbothflexibleandprovidesperforman

5、cecomparableorsuperiortotraditionalapproaches.1.INTRODUCTIONThemostcommonapproachestotheimplementationofdigitalfilteringalgorithmsaregeneralpurposedigitalsignalprocessingchipsforaudioapplications,orspecialpurposedigitalfilteringchipsandapplication-spec

6、ificintegratedcircuits(ASICs)forhigherrates[9,14].Thispaperdescribesanapproachtotheimplementationofdigitalfilteralgorithmsonfieldprogrammablegatearrays(FPGAs).RecentadvancesinFPGAtechnologyhaveenabledthesedevicestobeappliedtoavarietyofapplicationstradi

7、tionallyreservedforASICs.FPGAsarewellsuitedtodatapathdesigns,suchasthoseencounteredindigitalfilteringapplications.Thedensityofthenewprogrammabledevicesissuchthatanontrivialnumberofarithmeticoperationssuchasthoseencounteredindigitalfilteringmaybeimpleme

8、ntedonasingledevice.TheadvantagesD27重庆大学本科学生毕业设计（论文）附件oftheFPGAapproachtodigitalfilterimplementationincludehighersamplingratesthanareavailablefromtraditionalDSPchips,lowercoststhananASICformoderatevolumeapplications,andmoreflexibilityth