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1、ImplementationofSTFSKDetectionBasedonDecoupledMaximumLikelihoodDetectionGaoYuan-yuanShenYue-hongHuXian-bin(DepartmentofRadioCommunication/CE,PLAUST,Nanjing210007,China)AbstractThispaperpresentsadecoupledmaximumlikelihood(ML)detectionalgorithm,whichutiliz
2、estheorthogonalcharacteristicofsignal,decoupledthecombinedMLdetectionintoseparatedone,undertheassumptionthatCSIisknownatthereceiver.Utilizingappropriatechannelestimationalgorithm,thedecoupledalgorithmnotonlysharplyreducesthecomputationalcomplexitycompare
3、dtothenoncoherentMLdetection,butalsoimprovestheperformance.Simulationresultsconfirmtheeffectivenessofthealgorithm.KeywordsSpace-TimeFrequencyShiftKeying(ST-FSK),Unitarydesign,DecoupledMaximumLikelihood(ML)detection,CoherentmaximumlikelihooddetectionPrefa
4、ceTheFSKmakesawayishighbecauseofitspowerutilization,besubjectedtothelimitletterwayinthepowerthusWintogetextensivelyapplied,ifthemilitarycorrespondsbylettertocorrespondbyletterandsatellite,culturalheritagehaveanotherantennaTheemptyhourcodesthetechniqueand
5、FSKtomakeatechniquetocombinetogether,acquiringmanyantennastobringThecentgatherstoincreaseabenefit,inthebenefitdeclinetheletterwayunderconditiondidn'tneedletterwayinformation,canadoptnotConcernwithofbiggesthowever(ML)thedetectorf}l.Culturalheritage[2)putf
6、orwardtousematrixishandovertraingleResolve((QR)calculateway,BeDOIngnotlosethepremiseofthesystemfunctionunder,loweranoperationQuantity,simplifytocarryoutthecomplexityofthatMLdetector.ThistextputsforwardakindofseparationMLsignalexaminationmethod,beingbelie
7、vinganappearanceinformatonTheFknowofunderassumptionmakeuseoftosendoutsignalishandoversexcharacteristics,makemanyreceiveTheMLconsociationofthequantityexaminationtheproblemseparateforsomevectorsalonetheMLexaminationask.Inoperatingquantitynotonlyconsumedlyl
8、owinabovetwokindsofnotmutuallythousandexaminations,andgetGettheexaltationofthefunctionbigin3dBosAdoption'sseparatingthemaincharacteristicsoftheSTFSKof[with]theMLexaminationmethodBE:(1)adoptUsetherealamountfullspeedrateisha
