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1、万方数据ABSTRACTAsmobilecommunicationstechnologysteppedintothehigh-speeddevelopmentperiod,itdemandsmoreandmoreforSystemLoad.But,thespectrumresourceleftforthemobilecommunicationisverylimited.Inaddition,theexistingmobilecommunicationtechnologydoesnottakefulladvantageof
2、thespectrum.Device-to-Devicesystemcaneffectivelyimprovethesystemresourceutilization.Atthesametime,itcandecreasetheterminaltransmissionpowerandreducetheenergyconsumption.Therefore,researchonDevice-to-DevicecommunicationunderlayingLTEisverymeaningful.Firstly,thisth
3、esisintroducesseveralkeytechniquesonDevice-to-DevicecommunicationunderlayingLTE,suchasthebuildingofD2D,channelmeasurementandmodeselection,etc.Then,westudiestheanti-interferencetechnologyintheLTEsystem,especiallyanalyzetheinterferencecoordinationtechnology.Basedon
4、these,theinterferencebetweentheD2DsystemandLTEsystemisanalyzedindetail,andfinallythispaperdeterminesadoptingtheinterferencecoordinationschemewhichcombinesintelligentresourcemanagementanddynamicpowercontrol,basedontheuplink.Thisthesisputsforwardanuplinkresourceall
5、ocationschemebasedonBPneuralnetwork,focusingonthereuseproblemonuplinkresource.Theschemeisanimprovementbasedoninterferenceawarenessscheme,whichcanguaranteesystemthroughputmaximizationandmakedecisionsquickly.ThisisbecausetheBPneuralnetworkcancomprehensivehistorical
6、experiences.Theresultsofsimulationshowthatthisproposedschemecanmaximizethesystemthroughputandspendinglesstime.Finally,thisthesisstudiesthedynamicpowercontrolofDevice-to-DevicecommunicationunderlayingLTE.ItfirstlyintroducesthebasicpowercontrolmechanismonLTE,thenpu
7、tsforwardakindofintelligentdynamicpowercontrolschemebasedongeneticalgorithm,consideringbothcommunicationqualityandenergyconsumption.Theresultsofsimulationshowthatthisschemecannotonlyimprovesomesystemthroughput,butalsoeffectivelyreducethesystempower.Keyword:LTED2D
8、InterferencecoordinationBPneuralnetworkGeneticalgorithm万方数据万方数据目录第一章绪论.........................................................................................
