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System Level Design of a Turbo Decoder Communication Systems

System Level Design of a Turbo Decoder Communication Systems

ID：39989282

大小：1.02 MB

页数：123页

时间：2019-07-16

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1、ABSTRACTELECHITAYASURESH,SANATHKUMAR.SystemLevelDesignofaTurboDe-coderforCommunicationSystems.(UnderthedirectionofProfessorWinserEAlexander).Advancementsinsilicontechnologyhaveheraldedanincreaseindevicedensitiesandconsequentlydesigncomplexity.TheincreasingcomplexityofmodernSy

2、stemonaChipdesignsdictatesacohesivemethodologyforco-simulationatbothhighandlowabstractionlevels,effectivedesignspaceexploration,systemintegrationandhighsimulationspeeds.AsingleunifieddesignflowwouldavoidmanyoftheshortcomingsfacedbythetraditionalRTLapproachtodesignandverification.

3、ThisthesisinvestigatedaSystemCrbaseddesignmethodologytomodelcomplexdigitalsystemsatmultiplelevelsofabstraction.TheSystemClanguage,whichisaC++classlibrary,isamulti-paradigmlanguageforhardwaredesignandverification.ThecapabilitiesofSystemCinsupportingtimedbehavior,hierarchy,concu

4、rrency,andcreationoffastexecutablespecificationsofthetargetdesignhavebeendemon-stratedinourwork.Itwasouraimtoclearlyrepresenttheabilityoftheproposeddesignflowtocaptureandvalidatethedetailsofadesignatthesystemlevelofabstraction,startingwithanabstractFunctionalVerificationlevel,wo

5、rkingourwaythroughtotheCycleAccuratelevel.ThiswasexemplifiedbythedesignofacomplexIterativeTurboDecoderalgorithmasaprototypesystemtotestourdesignflow.WecomparedthedecoderbehavioratthesystemlevelusingSystemCandattheRTLus-ingVerilog2001r.Wefoundthatsimulationsperformedatthesysteml

6、evelexecutedmuchfasterthansimulationsattheRTL.Weusedthesystemleveldesigntoestimateround-offerrorswithouthavingtorefineourdesigntotheRTL.WedemonstratedtheeaseofarchitecturalexplorationusingSystemCbyimplementingtwoclassesofinterleaversfortheTurboDecoder:thePseudoRandomandthe3GPPS

7、tandardInterleaver.WealsoperformedadetailedpowerandareaanalysisontheRTLmodelusingtheSSHAFTtool.Weestablishedasinglelanguageframeworkthatallowsanalysisofthetrade-offsbetweenhardwareandsoftwareimplementationmodels.SystemLevelDesignofaTurboDecoderforCommunicationSystemsbySanathKu

8、marElechitayaSureshAthesissubmittedtotheGraduateFacultyofNorthCaroli

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