ofdma系统中自适应资源分配算法的研究

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1、西南交通大学硕士研究生学位论文第1I页AbstractTherlext-genera：tionof、加relesscommuIlicationsystemsrleedt0supporttlighdataralewirelessmultimediasen，ices．Duet0mescarcit)，ofradioresource，Itistllekeyresearchpoimintllefieldofmobilecomm戚catiollSmathowt0uSemeradioresourcee伍ciently．Currently，

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3、int11eonllogoIlalf．requencydiVisionmultipleaccess(OFDN￡A)syStems．111menext-generation池lesscommullicationsystems，廿leconsumptionofenerg)，isi11creasing淅t11thehlcrememoftra筒c，soitisiIIlponalltt0妇provet11ee伍ciencyofmesystemsanddecreasenleoVerallenergyconsumptionforgreen

4、operation．T11ispaperattemptst0max妇izetlleene碍ye茧ciencyViaexecutingad印tiVeresourcea110cationalgori虹皿．Thecu玎entresearchworksinadaptiVeresourcea110cation0fOFDMAsystemsusuallyadoptoptinlalalgorithm埘nl11i曲complexi够T址spaperproposesalowcomplex时sub-optimalalgorithmwMchallo

5、catest：hesub—c删eraIldbitsimul伽eously，andformulatestheoptimalgoal2LstomillimizetlleoVerall咖lsmitpower．Theproposedalgorithmllasnolimitfor付lenumberofsub-carrierSandt11esub-c删ersetofeVe巧user．FirStly，wei11仃oducethemiIlimunldataraterequirementastlleuserdemandf．actoLThebi

6、ggertheuserdemaIldfactoris，t11ela玛ermerequirementdegreeofuserforsub-c痢era11dbitis．W．ea110cateonesub-ca仃ierandonebitt0eachuseraccordingt0廿leuserdemandf．actor．The玛weusetheratioof也emillimumdataraterequirememandnleinStantrateasmeuserdemandfactor．Simil盯ly，t11ebiggertlle

7、uSerdemaIldfactoris，也ela玛ertllerequirementdegreeofuserforsub—c嬲-ierandbitis．W色alloca钯thesub—ca玎ierS锄dbitst0usersaCcordingtllesequenceofuserdemaIldfactor，untiltllem础mumdataraterequh℃mentsofa11userSaresatisfiedorallsub-carrierandbitsareexhal】sted．Notemattlleuserdeman

8、dfactorisdyn锄ic“ng廿1eprocessofallocation．W色comparet11epe墒mallceofmeproposedalgorit}皿wimBABS-RCGalgorithmandBABS—ACGalgoritl衄bymatlabsimulation．Si