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1of49,MT8820A-E-H-1-(2.00),CDMA基站测试,1CDMA物理层介绍2CDMA基站测试项目31xEVDO介绍4EVDO基站测试项目,cdma2000Evolution,IS-95,IS-95-A,TIA/EIA-95-B,J-STD-008TSB-74,cdma20001xRelease0,cdma20001xReleaseA,cdma20001xReleaseB,cdma20001xReleaseC,cdma20001xReleaseD,cdma20003x,cdma20001xEVDO(Rev0),cdma20001xEVDO(RevA),cdma20001xEVDO(RevB),1CDMA物理层,CDMA(CodeDivisionMultipleAccess)标准：,IS-95AIS-95A/B：2G移动通信标准也称为cdmaOne.IS-2000IMT-2000的一种3G通信标准也被称为cdma20001xEV-DORelease01xEV-DO被规划用于优化数据传输，最高可支持2.4Mbps的传输速率，支持多媒体业务如MP3，video等传输1xEV-DOReleaseA1xEV-DORelease0的升级,CDMA20001xEV-DORevA可提供更高数率的上下行连接，前向最高可达到3.1Mbps,反向最高1.8Mbps.RevA在载波带宽不变的情况下（1.25MHz）也提供了更高的小区容量。,多种RF信道带宽快速前向链路功率控制前向链路发送分集Turbo码技术反向链路相干解调灵活的帧长cdma系统时间多选择的长交织器,1CDMA物理层,关键技术,扩频速率(SpreadingRate,SR)SR1:前向和反向cdma信道在单载波上都是采用码片速率为1.2288Mcps的直接序列扩谱SR3:前向信道有3个载波，每个载波的码片速率为1.2288Mcps，反向信道在单载波上采用码片速率为3.6864Mcps的直接序列扩频无线配置(RadioConfiguration,RC)RC是指一系列前向或反向业务信道的工作模式，每种RC支持一套数据速率，其差别在于物理信道的各种参数，包括各种调制特性和扩频速率等无线传输技术(RadioTransmissionTechnology,RTT),1CDMA物理层,SpreadingRate1andSpreadingRate3,1CDMA物理层,CDMAChannelGeneration,1CDMA物理层,CDMACarrier(CellularBand),1CDMA物理层,CDMACarrier(CellularBand),CDMACarrier,30KHz,283,42Channels,304,261,1CDMA物理层,CDMACarrier(PCSBand),1.25MHz,1.25MHz,ReverseCDMAChannel,ForwardCDMAChannel,80MHz,Frequency,ChannelFrequency,251851.25MHz,251931.25MHz,1CDMA物理层,CDMACarrier(PCSBand),CDMACarrier,50KHz,25,25Channels,1CDMA物理层,RadioConfigurations,RadioConfiguration:AsetofForwardTrafficChannelandReverseTrafficChanneltransmissionformatsthatarecharacterizedbyPhysicalLayerparameterssuchastransmissionrates,modulationcharacteristics,andspreadingratecdma2000RadioConfigurations:RC1throughRC9ontheForwardlinkRC1throughRC6ontheReverselink,1CDMA物理层,ForwardLinkRadioConfigurations,1CDMA物理层,ReverseLinkRadioConfigurations,1CDMA物理层,快速前向链路功率控制,移动台在检测了前向链路的Eb/N0后送出功率控制比特功率控制比特与反向导频信道复用功率控制比特不进行编码，避免编码，成帧和解码等造成的时延功率控制速率是固定的800次/秒,1CDMA物理层,前向链路的发送分集,多载波发送分集(MCTD)对于MC方式，不同的天线采用不同的载波正交发送分集(OTD)对于DS方式，可以通过分离数据流，采用正交序列扩展两个数据流来完成,1CDMA物理层,ForwardLinkChannelFunction,PilotChannelThemoststrongestandmostobvioussignal,about15%oftotalpower;Providesaphasereferenceforcoherentdemodulation;ProvidesmultipathdetectionforRakereceiver;Provideameansforsignalstrengthcomparisonsbetweenbasestationsfordeterminingwhentohandoff.DiversityPilotChannelThepilotchannelandthe发射分集导频信道（transmitdiversitypilotchannel）providephasereferencesforcoherentdemodulationofforwardlinkCDMAchannelswhichemploytransmitdiversity.AuxiliaryPilotChannelAnauxiliarypilotchannelisrequiredforforwardlinkspotbeamandantennabeamformingapplications,andprovidesaphasereferenceforcoherentdemodulationofthoseforwardlinkCDMAchannelsassociatedwiththeauxiliarypilot.TransmitDiversityPilotChannelAtransmitdiversitypilotchannelassociatedwithanauxiliarypilotchannel.,1CDMA物理层,ForwardLinkChannelFunction,DedicatedControlChannelCo-existwithothertrafficchannelsTransmitUpperLayerSignaling,MACmessages,andRLPframesProvidesConduitformessaginginsteadofFundamentalChanneldim/blankandburstBroadcastControlChannelBroadcastonlyoverheadmessagesandSMSmessages.removestheoverheadmessagesfrompagingchanneltoaseparatechannelQuickPagingChannelSignalsentbyabasestationtoinformmobilestationsoperatingintheslottedmodeduringtheidlestatewhethertoreceivethePagingChannelstartinginthenextForwardPagingChannelframe.,1CDMA物理层,ForwardLinkChannelFunction,SyncChannelTransportsthesynchronizationmessagetothemobilestation.PagingChannelTransmissionofcontrolinformationandpagesfromabasestationtomobilestations.Broadcastsystemmessages,channel,andneighborpilotsinformationtoMS9600or4800bps,20msframedurationForwardCommonControlChannelandBroadcastControlChannelTransmissionofdigitalcontrolinformationfromabasestationtooneormoremobilestations.CommonAssignmentChannelUsedbythebasestationtoacknowledgeamobilestationaccessingtheEnhancedAccessChannelorReservationAccessMode.CommonPowerControlChannelTheCommonPowerControlChannelisusedbymobilestationsoperatinginthePowerControlledAccessModeorReservationAccessMode.,1CDMA物理层,ReverseLinkChannelFunction,AccessChannelCommonchannelsusedforcommunicationoflayer3andMACmessagesfrommobiletobasestation.TheAccessChannelisusedforshortsignalingmessageexchanges,suchascalloriginations,responsestopages,andregistrations.ReversePilotChannelAssiststheBStodetectaMStransmissionProvidescontinuouschannelestimationandreverselinkpowercontrolforforwardlink(RC3toRC6)PreambleofR-EACH,R-CCCH,andR-TCHReverseDedicatedChannelCo-existwithothertrafficchannelsTransmitUpperLayerSignaling,MACmessages,andRLPframes,1CDMA物理层,ReverseLinkChannelFunction,ReverseEnhancedAccessChannelWorkinginmodes.BasicAccessMode,mode,andReservationMode,closedlooppowercontrolFramedurationshallbe20,10,or5msindurationUsedjointlywithR-CCCHwhenworksinReservationModeReverseCommonControlChannelUsedforthetransmissionofuserandsignalinginformationtoBSwhenReverseTrafficChannelsarenotinuse.Twomodes,ReservationmodeandDesignatedmodeVariabledataratesof9.6,19.2,and384.Kbps20,10,or5msinframedurationEachR-CCCHisassociatedwithasingleF-CCCH,1CDMA物理层,2Cdma基站测量标准：C.S0010-C,Cdma基站测试项目,频率覆盖频率稳定度相位精度波形质量子信道前向功率控制平均功率测量导频功率测量码域功率测量带外杂散发射互调占用带宽,Cdma测试注意事项,确保输入正确的频点，Input=RF，注意仪表的最大输入电平，安全操作Forward(RC1-2)：IS95基站；Forward(RC3-5)：2000基站确保输入正确的频点,2Cdma基站测量,FrequencyToleranceDefinitionFrequencytoleranceisdefinedasthemaximumalloweddifferencebetweentheactualCDMAtransmitcarrierfrequencyandthespecifiedCDMAtransmitfrequencyassignment.Thistestshallapplytoeverybandclassthatthebasestationsupports.MinimumStandardForalloperatingtemperaturesspecifiedbythemanufacturer,theaveragefrequencydifferencebetweentheactualCDMAtransmitcarrierfrequencyandspecifiedCDMAtransmitfrequencyassignmentshallbelessthan510-8ofthefrequencyassignment(0.05ppm).,2Cdma基站测量,PhaseToleranceDefinitionPilotChanneltocodechannelphasetoleranceisthepermissibleerrorinRFphasebetweentheradiatedPilotChannelandtheotherchannelswithinoneForwardCDMAChannel.MinimumStandardThephasedifferencesbetweenthePilotChannelandallothercodechannelssharingthesameForwardCDMAChannelshouldnotexceed0.05radiansandshallnotexceed0.15radians.,2Cdma基站测量,WaveformqualityDefinitionWaveformqualityismeasuredbydeterminingthenormalizedcorrelatedpowerbetweentheactualwaveformandtheidealwaveform.MinimumStandardForallbasestations,thenormalizedcrosscorrelationcoefficient,shallbegreaterthan0.912(excesspower0.97,2Cdma基站测量,TotalPowerDefinitionBasestationtotalpoweristhemeanpowerdeliveredtoaloadwithresistanceequaltothenominalloadimpedanceofthetransmitter.MinimumStandardThetotalpowershallremainwithin+2dBand-4dBofthemanufacturersratedpower,2Cdma基站测量,PilotPowerDefinitionThePilotChannelpowertototalpowerratioisthepowerattributedtothePilotChanneldividedbythetotalpower,andisexpressedindB.MinimumStandardThePilotChannelpowertototalpowerratioshallbewithin0.5dBoftheconfiguredvalue.,2Cdma基站测量,CodeDomainPowerDefinitionCodedomainpoweristhepowerineachcodechannelofaCDMAChannel.MinimumStandardIfthebasestationsupportsRC10,themeancodedomainpowershallbe31.5dBormorebelowthetotalmeanoutputpower,2Cdma基站测量,SpuriousEmissionsDefinitionConductedspuriousemissionsareemissionsatfrequenciesthatareoutsidetheassignedCDMAChannel,measuredatthebasestationRFoutputport.MinimumStandardRefertoSpec,2Cdma基站测量,Inter-BaseStationTransmitterIntermodulationDefinitionInter-basestationtransmitterintermodulationoccurswhenanexternalsignalsourceisintroducedtotheantennaconnectorofthebasestation.Thistestverifiesthatbasestationconductedspuriousemissionsarestillmetwiththepresenceoftheinterferingsource.MinimumStandardThebasestationshallmeettheconductedspuriousemissionrequirements,2Cdma基站测量,OccupiedBandwidthDefinitionTheoccupiedbandwidthisdefinedasthefrequencyrange,wherebythepowerofemissionsaveragedoverthefrequencyaboveandundertheedgefrequencyare0.5%eachofthetotalradiationpowerofamodulatedcarrier.MinimumStandardTheoccupiedbandwidthshallnotexceed1.48MHzforSpreadingRate1and4.6MHzforSpreadingRate3,3EVDO介绍,EVDO介绍,1xEV-DO主要优化了数据传输,其峰值速率2.4Mbps并支持多媒体如MP3，videoconferencing的传输.1xEV-DOintroducessometerminologythatdiffersfromcdma2000.AccessTerminal(AT)-Amobiledeviceequippedwitharadiomodemandadatainterface,allowingtheusertoaccessapacketdatanetworkthroughthe1xEV-DOaccessnetwork.AccessNetwork(AN)-Thisnetworkequipmentperformsthesameroleasabasestation,providingdataconnectivitybetweenapacket-switcheddatanetworksuchastheinternetandtheATs.,ForwardLinkPhysicalChannel,ARQ,TDMofForwardLinkChannel,Data,400chips,RPC/,RAB/DRCLock,RPC/,RAB/DRCLock,ActiveSlot,64,RPC/,RAB/DRCLock,Pilot,96,64,RPC/,RAB/DRCLock,Data,400chips,Data,400chips,64,Pilot,96,chips,64,Data,400chips,chips,1024chips=halfslot,1024chips=halfslot,Systemtime,1Slot,8Slots,1slot=1.667ms,1/2frame=13.33ms,Frame=26.67ms,16Slots,4Slots,2Slots,4slot=6.66ms,2slot=3.33ms,IdleSlot,ReverseLinkPhysicalChannel,Reverse,Channels,Pilot,Medium,Access,Control,Data,ReverseRate,Indicator,(RRI),DataRate,Control,(DRC),Pilot,Data,Traffic,Access,Ack,AuxiliaryPilot,DataSource,Control,(DSC),ReverseLinkFrameStructure,ReverseLinkFrameStructure,cdma20001xEVDORev0,Optimizedsupportfordownlinkintensive(asymmetric),delay-tolerantapplicationsWebbrowsing,FileTransfer,WAPetcGoalsCapacityandCoverageEnhancementSupportforQoSCapacityEnhancementForwardLink2.4MbpspeakdataratePhysicalLayerH-ARQMulti-userdiversityschedulerDiversityreceptionReverseLink153.6KbpspeakdatarateReverserateiscontrolledbyseveralfactors,cdma20001xEVDORevA,PhysicalLayerImprovedsupportforQoS-sensitiveservicesRapidconnectionsetupwithimprovedterminalbatterylifeHigherrateaccesschannel(upto38.4kbps)withshorterpreamble(4-slots)Shortinter-transmitintervaloncontrolchannelShortpacketcontrolchannel(4-slots)inIdlestateEfficientresourceallocationforbothlowlatencyanddelaytolerantdatasourcesANcontrolledtradeoff(perflow)betweencapacityandlatencyFinerratequantizationAdditionaldataratesonForwardLinkandReverseLinkLatencytargetdetermineseffectivedatarateImprovedpackingefficiencyMulti-userpacketsonForwardLink-AsinglephysicallayerpacketcancarrydataformultipleATsHigherpeakdatarates3.1MbpsonForwardLink(2.45Mbpsin1xEVDORev0)1.8MbpsonReverseLink(153.6Kbpsin1xEVDORev0),EVDO基站测试标准：C.S0032-A,EVDO基站测试,测试项目FrequencyCoverageFrequencyTolerancePilotChannelTimeToleranceWaveformQualityRPCChanneltimeResposeForwardTrafficChannelResponsetoACKChannelTotalOutputPowerPilot/MACChannelPowerCodeDomainPowerConductedSpuriousEmissionsInter-SectorTransmitterIntermodulationOccupiedBandwidth,EVDO基站测试,FrequencyCoverageFrequencyToleranceDefinitionThefrequencytoleranceisdefinedasthemaximumalloweddifferencebetweentheactualCDMAtransmitcarrierfrequencyandthespecifiedCDMAtransmitfrequencyassignment.Thistestshallapplytoeverybandclassthatthesectorsupports.MinimumStandardForalloperatingtemperaturesspecifiedbythemanufacturer,theaveragefrequencydifferencebetweentheactualCDMAtransmitcarrierfrequencyandspecifiedCDMAtransmitfrequencyassignmentshallbelessthan510-8ofthefrequencyassignment(0.05ppm).,EVDO基站测试,WaveformQualityDefinitionThewaveformqualityismeasuredbydeterminingthenormalizedcorrelatedpowerbetweentheactualwaveformandtheidealwaveform.Thistestisperformedwithasinglecarrierandsinglesectoronly.MinimumStandardThenormalizedcrosscorrelationcoefficientpilotshallbegreaterthan0.97(excesspower130.13dB).ThenormalizedcrosscorrelationcoefficientMACshallbegreaterthan0.912(excesspower0.4dB).Thenormalizedcrosscorrelationcoefficientdatashallbegreaterthan0.97(excesspower0.13dB)foralldatarates.,EVDO基站测试,TotalPowerDefinitionWithineachslot,thePilot,MAC,andTrafficorControlChannelsshallbetime-divisionmultiplexed.Alltime-divisionmultiplexedchannelsshallbetransmittedatequalpower.Thistestmeasuresthetimeresponseofthemeanoutputpowerfornon-idleslotsandthemeanpowerattheRFoutputport.MinimumStandard,EVDO基站测试,Pilot/MACChannelPowerDefinitionThePilot/MACChannelsaretransmittedinburstsof224chipseveryhalfslot.Inidleslots(whenthereisnodatatotransmitontheControlorForwardTrafficChannels)theseburstsaregatedintime.Thistestmeasuresthetimeresponseofthemeanoutputpowerforidleslots(Pilot/MACbursts).MinimumStandard,EVDO基站测试,ConductedSpuriousEmissionsDefinitionTheconductedspuriousemissionsareemissionsatfrequenciesthatareoutsidetheassignedCDMAChannel,measuredatthesectorRFoutputport.Conductedspuriousemissionsaremeasuredfortwotestconditions:Case1:ContinuousDataMode(noidleslots)Case2:IdleMode(allidleslots,excepttheControlChannel).Note:InhibitingControlChanneltransmissionsisoptionalforCase2.MinimumStandardRefertostandard.,EVDO基站测试,Inter-SectorTransmitterIntermodulationDefinitionTheinter-sectortransmitterintermodulationoccurswhenanexternalsignalsourceisintroducedtotheantennaconnectorofthesector.Thistestverifiesthatconductedspuriousemissionsarestillmetwiththepresenceoftheinterferingsource.MinimumStandardRefertostandard.,EVDO基站测试,OccupiedBandwidthDefinitionTheoccupiedbandwidthisdefinedasthefrequencyrange,wherebythepowerofemissionsaveragedoverthefrequencyaboveandundertheedgefrequencyare0.5%eachofthetotalradiationpowerofamodulatedcarrier.MinimumStandardTheoccupiedbandwidthshallnotexceed1.48MHz.,
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