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1、ImplementationofSTFSKDetectionBasedonDecoupledMaximumLikelihoodDetectionGaoYuan-yuanShenYue-hongHuXian-bin(DepartmentofRadioCommunication/CE,PLAUST,Nanjing210007,China)AbstractThispaperpresentsadecoupledmaximumlikelihood(ML)detectionalgorithm,whichutilizestheorthogonalcharacte

2、risticofsignal,decoupledthecombinedMLdetectionintoseparatedone,undertheassumptionthatCSIisknownatthereceiver.Utilizingappropriatechannelestimationalgorithm,thedecoupledalgorithmnotonlysharplyreducesthecomputationalcomplexitycomparedtothenoncoherentMLdetection,butalsoimprovesth

3、eperformance.Simulationresultsconfirmtheeffectivenessofthealgorithm.KeywordsSpace-TimeFrequencyShiftKeying(ST-FSK),Unitarydesign,DecoupledMaximumLikelihood(ML)detection,CoherentmaximumlikelihooddetectionPrefaceTheFSKmakesawayishighbecauseofitspowerutilization,besubjectedtothel

4、imitletterwayinthepowerthusWintogetextensivelyapplied,ifthemilitarycorrespondsbylettertocorrespondbyletterandsatellite,culturalheritagehaveanotherantennaTheemptyhourcodesthetechniqueandFSKtomakeatechniquetocombinetogether,acquiringmanyantennastobringThecentgatherstoincreaseabe

5、nefit,inthebenefitdeclinetheletterwayunderconditiondidn'tneedletterwayinformation,canadoptnotConcernwithofbiggesthowever(ML)thedetectorf}l.Culturalheritage[2)putforwardtousematrixishandovertraingleResolve((QR)calculateway,BeDOIngnotlosethepremiseofthesystemfunctionunder,lowera

6、noperationQuantity,simplifytocarryoutthecomplexityofthatMLdetector.ThistextputsforwardakindofseparationMLsignalexaminationmethod,beingbelievinganappearanceinformatonTheFknowofunderassumptionmakeuseoftosendoutsignalishandoversexcharacteristics,makemanyreceiveTheMLconsociationof

7、thequantityexaminationtheproblemseparateforsomevectorsalonetheMLexaminationask.Inoperatingquantitynotonlyconsumedlylowinabovetwokindsofnotmutuallythousandexaminations,andgetGettheexaltationofthefunctionbigin3dBosAdoption'sseparatingthemaincharacteristicsoftheSTFSKof[with]theML

8、examinationmethodBE:(1)adoptUsetherealamountfullspeedrateisha