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1、TD-SCDMA基础试题与答案One,thechoice:(1)thethirdgenerationofmobilecommunicationssystemsaremainlybasedonABCA:WCDMAB:CDMA2000C:td-scdmaD:CDMAIX(2)thekeytechnologiesusedbytd-scdmahavethoseABCDEFGA:TDDtechnologyB:smartantennaC:jointdetectionD:upwardsynchronizationE:relayswitchingF:software
2、radioG:dynamicchannelallocation(3)whatABCDisthemultipleaccessmethodoftd-scdmasystemA:FDMAC:CDMAD:SDMA(4)whatpartsofthenetworkstructureofthetd-scdmasystemmakeupABCDA:useridentificationmoduledomainB:mobiledevicedomainC:wirelessaccessdomainD:coredomain(5)thecarrierfrequencywidthof
3、td-scdmaisBA:1MHzB:1.6MHzC:2MHzI):1.4MHz(6)howfastthetd-scdmaisA:1.28McpsB:1.6McpsC:3.4Mcps:4McpsSeven(7)inTSO〜TS6thisregulartimeslot,Aisalwaysfixedusedfordownlinkbroadcasttimeslottosendsysteminformation,andisalwaysfixedforuplinktimeslot・TS5,TS5,TS4,TS4A:TSO,TS1,TS1,TS3,TS3,TS4
4、,(8)td-scdma/supstreamanddownstreamscalingfactorisAA:1,2,4,6,8,16B:1,3,4,6,8,10C:2,4,6,8,10,12D:4,5,7,8,9,11(9)themaximumcoverageradiusisAkmbythetimegapframestructureA.11.25B.22.5C・30D.41.25(10)featuresofthetd-scdmasystem,includingABCDA:coveragep1anB:capacityplanningC:frequency
5、pointplanningD:coderesourceplanning・(11)thecurrentestimateofmixedbusinesscapacityisDA.variousbusinesscalculateb・c.equivalentIrelandmethodafterIrelandmethodd・Campbel1?sformulaispresented(12)comparedwithWCDMA,thesignificantdifferencebetweencoverageandcapacityisthatthecoverageradi
6、usofthevariousbusinessescoveredbytd-scdmaisA;Thetd-scdmaneighborhoodbreathingphenomenonC・A.approximatesameb.c.differentnotobviousd・obviously(8)thereareseveralBCDEsitesforthesiteexplorationfacilityfortd-scdmaA:thecompassC:GPSD:rangefinderE:digitalcamera(9)thelaserrangefinderusua
7、llymeasuresthedistanceABintwodifferentwaysA:pulsemethodB:phasemethodC:measurementmethodD:measure(10)themeasurementintd-scdma.systemsmainlyincludesthoseaspectsABCA:measurementofBinidlemode:measurementCincontinuousmode:supportforlocatingbusinessmeasurementD:randommeasurementSecon
8、d,fillsupthetopicTheTDDmodetakesupthecorebandof55MHz,w
