A LOW-COMPLEXITY PORT SELECTION AND POWER ALLOCATION SCHEME IN DISTRIBUTION MIMO SYSTEMS-中国Betway体育网页登陆

摘要 InformationtheoreticalresultshaveshownthatDistributedAntennaSystems(DAS)canobtainhighercapacitythanCo-locatedAntennaSystems(CAS).Inthispaper,weinvestigateadownlinkportselectionandpowerallocationschemeinDistributedMultiple-InputMultiple-Output(D-MIMO)systems,whereDistributedAntenna(DA)portsrandomlylocateinthecell.Thecontri-butionofthispapercanbesummarizedastwoparts.Firstly,weanalyzehowantennacorrelationaf-fectspowerallocationinD-MIMOsystems.Secondly,basedonlargescalefadingandantennacorre-lation,alow-complexityportselectionandpowerallocationschemeisproposed.Intheproposedscheme,wetakebothlargescalefadingandantennacorrelationintoconsideration.Moreover,UserEquipment(UE)onlyneedstofeedbacktherankoftransmitantennacorrelationmatrix,whichwillnotincreasesystemcomplexitytoomuch.Simulationresultsverifythecapacityimprovementbasedontheproposedpowerallocationscheme.

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A LOW-COMPLEXITY PORT SELECTION AND POWER ALLOCATION SCHEME IN DISTRIBUTION MIMO SYSTEMS

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