ofdma动态资源分配算法的研究

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1、ABSTRACTABSTRACT：WithitslowISI，anti·frequencyselectivefadingandhighspectralefficiencyadvantages．OrthogonalFrequency—DivisionMultiplexingAccess，(OFDMA)TechnologyhasbeenchosenasthecoretechnologyinLTEdownlinksystemInrecentyean，withtherapiddevelopmentofLTEsystem，amorediverseandcomplexmobilecommunication

2、sbusinesscomeoutoneafteranother,Thedevelopmentf如mvoiceservicestoasingleSMSoflow—speeddataservicesandtobenowoptionalmultimediaservicesThecurrentOFDMAresourceallocationalgorithmpresentednewchallengesItrequiresthatwenotonlyensurehighresourceutilizationandfairnessamongusers，butalsotakecareofbusinessQual

3、ityofServiceInresponsetobusinessneeds．thispaperfOCUSeSonthesystembasedollOFDMAresourceallocationalgorithnlThepaperfirstlydescribestheorthogonalfrequencydivisionmultiplexing(OFDM)describestheOFDMandOFDMAtechnologiesandtherelationshipbetweenLTEsystemsandNetworkarchitectureofLTEsystemProvideatheoretica

4、lbasisfartheUFEsystemlevelsimulationplatformbuildinglater．Combinethechnractensticsofwirelesscommunicationsystemsanalysisandtheimpor'anceofradioresourcemanagementtechniquesinwilelesspacketschedulingmanagementofcriticalresourcesThroughthewirelesscommunicationsystemintheresourcepacketschedulingtechnolo

5、gydivision，schedulerandschedulingprocess，schedulingoptionsandotherin—depthanalysisoftheresourceschedulinginpacketschedulingimportantroleThenthepacketschedulingalgorithmperformanceonresourceevaluationcriteria，groupingofseveralclassicalschedulingalgorithmstoachievethesimulationThesimulationresultsinac

6、cordancewithevaluationcriteriatomakeacomparativeanalysisot'severMalgorithms，obtainedseveralclassicalschedulingalgorithmsandperformancescopeofapplicationAfterthemixtureusedinthebusinessofschedulingprincipleisanalyzed，theutilityfunctionoftheconstraintanalysissystemisintroduced，throughtheutilityfunctio

7、nofthemosteffectivemodelanalysisandmathematicalderivation，presentsaQoSguaranteeforthepurposeofreal—timeserviceandnou*real—timeservicemixedserx,iceschedulingalgorithm，andintheLTEsystemlevelshnulationpl