ofdma无线多跳中继网络中关于能效的资源分配的研究

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1、traditionalcellularnetworkhasbeenunabletomeettheneedsofthehighspeedrateandthehighqualityofservice．Thenext．generationwirelesscommunicationtechnologystandards．suchasIJE—AandWiMAX．haveintroducedtheRelayStationtoassisttheBaseStationtocompletethedatacommunication．Introdu

2、cingRelayStationcalleffectivelyexpandtheeellcoverage，implovetheusers’qualityofserviceinthecelledge，andimprovethesystemthroughput．Meanwhile，becauseoftheabilityofanti．multipath．theimprovementofthesystemspectralefficiency,andtheflexibleallocationofresources，OrthogonalF

3、requencyDjvisionMultiplexingistreatedasthetechnicalbasisofthefourthgenerationmobilecommunicationstandard．Inthisthesis．OFDMAwhichisbasedonOFDMistheresearchfoundation．TIlisthesisfirstlyintroducesthebasicprinciplesof0FDM／OFDMA．theframestructureofOFDMA，andtheclassificat

4、ionofRS。thellitanlayzesindetailthenewproblemsandchallengesonthechan2ingofOFDMAframestructureandresourcemanagementaftertheintroductionofRS．Secondly,itanlayzestheglobaljointoptimumallocationalgorithmwhichisbaesdontheminimumsystempowerconsumptioninOFDMAcellularnetwork．

5、aswellasvarioussub．optimizationschemes．Andtheperformanceofvariousallocationalgorithmscanbeevaluatedthroughthesimulation．Finally,thetwo—hoplinkinOFDMAAFrelaysystemisvirtualizedasasingle—hoplink．andtheoptimalglobalresourceallocationalgorithmin也eOFDMAcellularnetworkisi

6、ntroducedtotherelaysystem．anditcanimprovethedesignaccordingtotheactualscenarios．Thesimulationresultsshowtllattheimprovedglobalresourceallocationalgorithmismoreapplicabletotheactualsceneoftherelaysystem。andcaneffectivelyimprovetheenergye伍ciencyandthesystemthroughputw

7、hilemaintainingthefairnessofthedifferentUSerS．Forthepacketschedulingin0FDMAtwo．hoprelaysystem，thisthesisfirstlyanlayzestheenergye衔ciencyofdifferentmodulationsandcodingschemesforasingleuserandtheoccupancyoffrequencyresourcesandpowerresourcesforasingleUSer,thellituses

8、theanalysisresultstoproposeaproportionalfairschedulingalgorithmbasedonenergyefficiency．Tllisalgorithmconsiderstheschedulingpriorityfactort