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1、SimplifiedConfigurationofFadingEmulatorSystemforMIMO-OTATestingAkiraKosako,MasahiroShinozawa,YoshioKarasawaAdvancedWirelessCommunicationresearchCenter(AWCC),TheUniversityofElectro-Communications(UECTokyo)1-5-1Chofugaoka,Chofu-shi,Tokyo,182-8585,JapanE-mail:kosako@radio3.ee.uec.ac.jpA
2、bstract—OTA(Over-The-Air)system,whichisoneofthe䇼FE-1䇽Channel-path-controlledtypeMIMOterminalevaluationmethods,achievesrealmultipath䋨FullConfiguration䋩fadingenvironmentaroundthemeasurementdevice,anditisFadingEmulatorTypecurrentlybeingstandardized.Fadingemulator,oneofMIMO-䋨FE䋩䇼FE-2䇽OTA
3、measurementsystems,canachievethedesiredpropagationAntenna-branch-controlledtypeenvironmentaroundassessmentareabyradiowavesradiated䋨SimplifiedConfiguration䋩OTAfromanumberofantennasplacedonacirclearoundtheTestingSystemterminal.Thispaperproposesasimplifiedconfigurationof䇼RC-1䇽Bothtransm
4、itandreceiveantennasarefadingemulatorsystem,andevaluatestheperformanceintermsReverberationplacedintheChamberofeigenvaluesandchannelcapacityobtainedbythecomputerChamberType䋨RC䋩simulationandexperiment.䇼RC-2䇽Transmitterisplacedoutsidethechamber,andScatteringantennasareplacedinthechamber
5、IndexTerms—MIMO-OTATesting,FadingEmulator,䋨RC/FEHybridtype䋩SimplifiedConfigurationFig.1.ClassificationofsystemforMIMO-OTATestingI.INTRODUCTIONInthispaper,weconsiderfading-emulator-typeOTAtestingCurrently,MIMO(MultipleInputMultipleOutput)environment,particularlyfocusonsimplifiedtype(F
6、E-2).technologyisappliedtoseveralwirelesssystemssuchaswirelessLAN(IEEE802.11.n),WiMAX(IEEE802.16),andII.CHANNELMODELANDCONFIGURATIONOFSIMPLIFIEDLTE(LongTermEvolution).OTA(Over-The-Air)isoneofFADINGEMULATORSYSTEMwidelyknownmethodstoevaluateterminalsemployedinthesesystems.Thismethodcre
7、atesarealfadingenvironmentaroundA.TestingSystembySimplifiedFadingEmulatortheevaluatedterminals[1].OTAtestingenvironmentforMIMOterminalsiscategorizedintotwotypesofconstruction.Ingeneralfadingemulatorsystems,inputsignalssentfromThefirstisusingReverberationChamber,andtheotheristransmitt
8、erareneededt
