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1、ImplementationofSTFSKDetectionBasedonDecoupledMaximumLikelihoodDetectionGaoYuan-yuanShenYue-hongHuXian-bin(DepartmentofRadioCommunication/CE,PLAUST,Nanjing210007,China)AbstractThispaperpresentsadecoupledmaximumlikelihood(ML)detectionalgorithm,whichutilizestheorthogonalcharacteristi
2、cofsignal,decoupledthecombinedMLdetectionintoseparatedone,undertheassumptionthatCSIisknownatthereceiver.Utilizingappropriatechannelestimationalgorithm,thedecoupledalgorithmnotonlysharplyreducesthecomputationalcomplexitycomparedtothenoncoherentMLdetection,butalsoimprovestheperforman
3、ce.Simulationresultsconfirmtheeffectivenessofthealgorithm.KeywordsSpace-TimeFrequencyShiftKeying(ST-FSK),Unitarydesign,DecoupledMaximumLikelihood(ML)detection,CoherentmaximumlikelihooddetectionPrefaceTheFSKmakesawayishighbecauseofitspowerutilization,besubjectedtothelimitletterwayin
4、thepowerthusWintogetextensivelyapplied,ifthemilitarycorrespondsbylettertocorrespondbyletterandsatellite,culturalheritagehaveanotherantennaTheemptyhourcodesthetechniqueandFSKtomakeatechniquetocombinetogether,acquiringmanyantennastobringThecentgatherstoincreaseabenefit,inthebenefitde
5、clinetheletterwayunderconditiondidn'tneedletterwayinformation,canadoptnotConcernwithofbiggesthowever(ML)thedetectorf}l.Culturalheritage[2)putforwardtousematrixishandovertraingleResolve((QR)calculateway,BeDOIngnotlosethepremiseofthesystemfunctionunder,loweranoperationQuantity,simpli
6、fytocarryoutthecomplexityofthatMLdetector.ThistextputsforwardakindofseparationMLsignalexaminationmethod,beingbelievinganappearanceinformatonTheFknowofunderassumptionmakeuseoftosendoutsignalishandoversexcharacteristics,makemanyreceiveTheMLconsociationofthequantityexaminationtheprobl
7、emseparateforsomevectorsalonetheMLexaminationask.Inoperatingquantitynotonlyconsumedlylowinabovetwokindsofnotmutuallythousandexaminations,andgetGettheexaltationofthefunctionbigin3dBosAdoption'sseparatingthemaincharacteristicsoftheSTFSKof[with]theMLexaminationmethodBE:(1)adoptUsether
8、ealamountfullspeedrateisha
