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时间:2018-07-16
《外文翻译---基于fpga系统的数字信号处理适用性评估》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、一、英文原文AnAssessmentoftheSuitabilityofFPGA-BasedSystemsforuseinDigitalSignalProcessing★Tobepublishedin5thInternationalWorkshoponField-ProgrammableLogicandApplications,Oxford,England,Aug.1995.★★ThisworkwassupportedbyARPA/CSTOundercontractnumberDABT63-94-C-0085underasu
2、bcontracttoNationalSemiconductor.RussellJ.PetersenandBradL.HutchingsBrighamYoungUniversity,Dept.ofElectricalandComputerEngineering,459CB,ProvoUT84602,USAAbstract.FPGAshavebeenproposedashigh-performancealternativestoDSPprocessors.ThispaperquantitativelycomparesFPGAp
3、erformanceagainstDSPprocessorsandASICsusingactualapplicationsandexistingCADtoolsanddevices.PerformancemeasureswerebasedonactualmultiplierperformancewithFPGAs,DSPprocessorsandASICs.ThisstudydemonstratesthatFPGAscanprovideanorderofmagnitudebetterperformancethanDSPpro
4、cessorsandcaninmanycasesapproachorexceedASIClevelsofperformance.1IntroductionTomeettheintensivecomputationandI/OdemandsimposedbyDSPsystemsmanycustomdigitalhardwaresystemsutilizingASICshavebeendesignedandbuilt.Customhardwaresolutionshavebeennecessaryduetothelowperfo
5、rmanceofotherapproachessuchasmicroprocessor-basedsystems,buthavethedisadvantageofinflexibilityandahighcostofdevelopment.TheDSPprocessorattemptstoovercometheinflexibilityanddevelopmentcostsofcustomhardware.TheDSPprocessorprovidesflexibilitythroughsoftwareinstruction
6、decodingandexecutionwhileprovidinghighperformancearithmeticcomponentssuchasfastarraymultipliersandmultiplememorybankstoincreasedatathroughput.TheFPGAhasalsorecentlygeneratedinterestforuseinimplementingdigitalsignalprocessingsystemsduetoitsabilitytoimplementcustomha
7、rdwaresolutionswhilestillmaintainingflexibilitythroughdevicereprogramming[2].UsingtheFPGAitishopedthatasignificant21performanceimprovementcanbeobtainedovertheDSPprocessorwithoutsacrificingsystemflexibility.ThispaperisanattempttoquantifytheabilityoftheFPGAtoprovidea
8、nacceptableperformanceimprovementovertheDSPprocessorintheareaofdigitalsignalprocessing.2MultiplicationanddigitalsignalprocessingAcoreoperationind
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