外文翻译-常用数字信号调制识别算法研究与仿真

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1、外文资料原文AnEfficientandSimpleMethodofMPSKModulationClassificationAbstract：Thispaperreportsonanovelmethodthatanalysessignals’MthpowerspectrumtoclassifythemodulationtypeofMPSKsignalswithoutcarrierandsymbolsynchronization.Whethersignalsthroughthefilterornotmakesnodi

2、fferencetothismethodandthemulti-patheffecthaslessinfluenceonit.Simulationsshowthatthecorrectrecognitionrateupto99%forSNR>-1dB.Keywords：MPSK;SoftDefinedRadio;ModulationClassification;FadingChannelsI.IntroductionTheSoftwareRadio(SR)approachleadstothedefinitionof

3、anewgenerationofradioequipment,whosecommunicationfunctionsarealmostcompletelydefinedbymeansofsoftwaremodules.Themainoutcomeofthedeploymentofthistechnologyisthegreatflexibilityoftheradiointerface.Asamatteroffactthecommunicationstandardscanbeeasilyreconfiguredby

4、simplyreplacingthecorrespondingsoftwaremodules.ThetermSoftwareRadio(SR)referstoanemergentapproachinthedefinitionofcommunicationtransceivers.AnidealSRtransceivercanbeviewedasagenericprogrammablecomputationaldevicewiredtoaminimalRadioFrequency(RF)frontend.Thepro

5、grammabledeviceperformsmostoftheair-interfacefunctions(coveringphysicalanddata-linklayersuptothenetworklayer)inthedigitaldomainbymeansofsoftware-definedcomponents.Inordertoresolvetheproblemofinter-symbolinterference(ISI)becauseoflimitedbandwidthofthechannelinw

6、irelessdigitalcommunications,thecommonadaptiveequalizerarchitecturesandinterrelatedalgorithmsweredeeplystudied.Modulationclassificationplaysanimportantroleincommunicationsapplicationssuchassignalconfirmation,interferenceidentification,monitoring,andsurveillanc

7、e.Nowadays,therearetwomainapproachestodealwiththeproblemofmodulationclassification.Oneisdecision-theoreticapproach,whichgenerallyhashighaccuracy,butitiscomplextorealize;theotheristhestatisticalpatternrecognitionthatiseasytoachieve.Inadecision-theoreticframewor

8、k,probabilisticandhypothesis-testingargumentsareemployedtoformulatetheclassificationproblemandobtaintheclassificationrule.Thedifficultylieswithintheimplementationofsuchadecisionrul