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《高速移動場景下基于幾何規(guī)劃的無線資源管理的研究》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、ABSTRACTABSTRACTABSTRAC’I’：111ordertomeettherequirementofLong‘IermEvolution—Advanced(LTE-A)onbandwidth，peakdatarates，useraveragethroughputandfrequencyefficiency，CarrierAggregation，EnhancedUplink(UL)／Downlink(DL)MultipleInputMultipleOutput(MIMO)，CoordinatedMulti—Pointstran
2、smissionandreception，Relay，EnhancedInter—CellInterferenceCoordination(elCIC)forHeterogenousNetworksandsomeotherkeytechnologiesareusedinLTE—Asystem．Amongthese，wirelessrelayisproposedtosolvetheproblemofexpandingthecoverageofthecell，andimprovingthecelledgethroughput．Ithasbec
3、omeoneofthehottopics．Ontheotherhand，moreandmorepeoplechoosetotakethehigh—speedtrainfortravelling．Peoplelookforwardtotheuseofadvancedcommunicationtechnologyforreliabledatatransmissioninthehigh—speedmobileenvironment，notonlyontraincontrol，butalsoonpassengers’communication．H
4、owever,atpresenttheexistinghigh-speedrailwaywirelesscommunicationsystemisfacingmanyissuessuchasthelargeandrapidlychangingDopplerfrequencyshift，theshortcoherencetimeoftheradiochannelimpulseresponse，thepenetrationlosscausedbythehigh·speedtrain’SclosedtrucksandSOon．Becauseof
5、problemsabove，thewirelesssystemcannotprovidethefastandreliablecommunicationserviceforpassengers．Therefore，inthispaperwecombinetheactualsituationofthehigh-speedrailwayscenariosandtheapplicationofthewirelessrelaytechnology．Westudyindepthtosolvetheradiorelaysystemresourceall
6、ocationalgorithmforthehigh—speedmobilescenariobyusinggeometricprogramming．Weproposeourmulti—cellsystemmodelinthispaper,andmakeinterferenceanalysisbetweencells．Mostimportantofall，wetakethetimedelayconstraintintoconsideration．Severalalgorithmsbasedongeometricprogrammingarep
7、roposed．Simulationresultsshowthattheproposedalgorithmshaveexcellentperformancetoimprovetheoverallsystemthroughput．KEYWORDS：LTE—A，wirelessrelay,resourceallocation，geometricprogramming，timedelayconstraint．CI．ASSNO：TN9295VlI序本論文是以北京交通大學(xué)寬帶無線通信實驗室的研究項目為背景，主要針對當(dāng)日訂高速鐵路環(huán)境下的無線通信問題
8、，結(jié)合4G無線通信標(biāo)準(zhǔn)LTE．Advanced中無線中繼技術(shù)進行研究，目的是通過對柏關(guān)無線資源分配算法的研究，探索改善高速移動用戶無線通信質(zhì)量的新方法和新思路，這種嘗試在國內(nèi)外相關(guān)研究中屬于較
