射频原理介绍

LTERRU与射频原理介绍LTE协议主要内容RRU根本原理射频根本原理目录LTERRU相关协议TS

36.101

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);UserEquipment(UE)radiotransmissionandreception

TS

36.104

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);BaseStation(BS)radiotransmissionandreception

TS

36.141

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);BaseStation(BS)conformancetesting

TR

36.801

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);MeasurementRequirements

TR

36.804

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);BaseStation(BS)radiotransmissionandreception

TR

36.942

EvolvedUniversalTerrestrialRadioAccess(E-UTRA);RadioFrequency(RF)systemscenarios

LTERRU开发协议版本当前研发中以3GPPRAN39次全会后的版本为准相应的版本号是V8.1.0LTE的信号带宽和传输带宽配置的关系ChannelbandwidthBWChannel[MHz]1.435101520TransmissionbandwidthconfigurationNRB615255075100Chiprate（MHz）1.923.847.6815.3623.0430.72版本，去掉了1.6MHz和3.2MHz带宽两种定义版本，去掉了对FDD和TDD的区分信道带宽和传输带宽配置定义LTE频段要求下行主要指标基站输出功率总功率动态范围频率误差EVM占用带宽ACLROperatingbandunwantedemissions〔与WCDMA的辐射模板类似〕杂散发射互调ACLR指标要求〔FDD〕E-UTRAtransmittedsignalchannelbandwidthBWChannel[MHz]BSadjacentchannelcentrefrequencyoffsetbelowthefirstorabovethelastcarriercentrefrequencyusedAssumedadjacentchannelcarrier(informative)FilterontheadjacentchannelfrequencyandcorrespondingfilterbandwidthACLRlimit1.4,3.0,5,10,15,20BWChannelE-UTRAofsameBWSquare(BWConfig)[45]dB2xBWChannelE-UTRAofsameBWSquare(BWConfig)[45]dBBWChannel/2+2.5MHz3.84McpsUTRARRC(3.84Mcps)[45]dBBWChannel/2+7.5MHz3.84McpsUTRARRC(3.84Mcps)[45]dBNOTE1: BWChannelandBWConfigarethechannelbandwidthandtransmissionbandwidthconfigurationoftheE-UTRAtransmittedsignalontheassignedchannelfrequency.NOTE2: TheRRCfiltershallbeequivalenttothetransmitpulseshapefilterdefinedinTS25.104[6],withachiprateasdefinedinthistable.ACLR指标要求〔TDD〕E-UTRAtransmittedsignalchannelbandwidthBWChannel[MHz]BSadjacentchannelcentrefrequencyoffsetbelowthefirstorabovethelastcarriercentrefrequencyusedAssumedadjacentchannelcarrier(informative)FilterontheadjacentchannelfrequencyandcorrespondingfilterbandwidthACLRlimit1.4,3BWChannelE-UTRAofsameBWSquare(BWConfig)[45]dB2xBWChannelE-UTRAofsameBWSquare(BWConfig)[45]dBBWChannel/2+0.8MHz1.28McpsUTRARRC(1.28Mcps)[45]dBBWChannel/2+2.4MHz1.28McpsUTRARRC(1.28Mcps)[45]dB5,10,15,20BWChannelE-UTRAofsameBWSquare(BWConfig)[45]dB2xBWChannelE-UTRAofsameBWSquare(BWConfig)[45]dBBWChannel/2+0.8MHz1.28McpsUTRARRC(1.28Mcps)[45]dBBWChannel/2+2.4MHz1.28McpsUTRARRC(1.28Mcps)[45]dBBWChannel/2+2.5MHz3.84McpsUTRARRC(3.84Mcps)[45]dBBWChannel/2+7.5MHz3.84McpsUTRARRC(3.84Mcps)[45]dBBWChannel/2+5MHz7.68McpsUTRARRC(7.68Mcps)[45]dBBWChannel/2+15MHz7.68McpsUTRARRC(7.68Mcps)[45]dBNOTE1: BWChannelandBWConfigarethechannelbandwidthandtransmissionbandwidthconfigurationoftheE-UTRAtransmittedsignalontheassignedchannelfrequency.NOTE2: TheRRCfiltershallbeequivalenttothetransmitpulseshapefilterdefinedinTS25.105[7],withachiprateasdefinedinthistable.Operatingbandunwantedemission指标举例〔FDD与TDD相同〕Frequencyoffsetofmeasurementfilter‑3dBpoint,

fFrequencyoffsetofmeasurementfiltercentrefrequency,f_offsetMinimumrequirementMeasurementbandwidth(Note1)0MHz

f<5MHz0.05MHz

f_offset<5.05MHz100kHz5MHz

f<10MHz5.05MHz

f_offset<10.05MHz-14dBm100kHz10MHz

f

fmax10.5MHz

f_offset<f_offsetmax

-15dBm1MHzf_offsetistheseparationbetweenthechanneledgefrequencyandthecentreofthemeasuringfilterf_offsetmaxistheoffsettothefrequency10

MHzoutsidetheBStransmitteroperatingband

Generaloperatingbandunwantedemissionlimitsfor5,10,15and20MHzchannelbandwidth(E-UTRAbands>1GHz)forCategoryBOperatingbandunwantedemissionrequirementslevelsrelativetochanneledge(E‑UTRAbands>1GHz，CategoryB)上行主要指标灵敏度动态范围信道内选择性〔In-channelselectivity〕邻道选择性阻塞接收杂散接收互调灵敏度指标要求〔FDD与TDD相同〕Thethroughputshallbe≥95%ofthemaximumthroughputofthereferencemeasurementchannelasspecifiedinAnnexAwithparametersspecifiedinTable：E-UTRAchannelbandwidth[MHz]Referencemeasurementchannel

Referencesensitivitypowerlevel,PREFSENS[dBm]1.4FRCA1-1inAnnexA.1-107.33FRCA1-2inAnnexA.1-103.65FRCA1-3inAnnexA.1-101.610FRCA1-3inAnnexA.1*-101.615FRCA1-3inAnnexA.1*-101.620FRCA1-3inAnnexA.1*-101.6Note*: PREFSENSisthepowerlevelofasingleinstanceofthereferencemeasurementchannel.ThisrequirementshallbemetforeachconsecutiveapplicationofasingleinstanceofFRCA1-3mappedtodisjointfrequencyrangeswithawidthof25resourceblockseach动态范围指标要求〔FDD与TDD相同〕E-UTRAchannelbandwidth[MHz]ReferencemeasurementchannelWantedsignalmeanpower[dBm]Interferingsignalmeanpower[dBm]/channelBWTypeofinterferingsignal1.4FRCA2-1inAnnexA.2-76.8-88.7AWGN3FRCA2-2inAnnexA.2-72.9-84.7AWGN5FRCA2-3inAnnexA.2-70.8-82.5AWGN10FRCA2-3inAnnexA.2*-70.8-79.5AWGN15FRCA2-3inAnnexA.2*-70.8-77.7AWGN20FRCA2-3inAnnexA.2*-70.8-76.4AWGNNote*: Thewantedsignalmeanpoweristhepowerlevelofasingleinstanceofthereferencemeasurementchannel.ThisrequirementshallbemetforeachconsecutiveapplicationofasingleinstanceofFRCA2-3mappedtodisjointfrequencyrangeswithawidthof25resourceblockseach邻道指标要求〔FDD与TDD相同〕E-UTRAchannelbandwidth[MHz]Wantedsignalmeanpower[dBm]Interferingsignalmeanpower[dBm]

Interferingsignalcentrefrequencyoffsetfromthechanneledgeofthewantedsignal[MHz]Typeofinterferingsignal1.4PREFSENS+11dB*-520.71.4MHzE-UTRAsignal3PREFSENS+8dB*-521.53MHzE-UTRAsignal5PREFSENS+6dB*-522.55MHzE-UTRAsignal10PREFSENS+6dB*-522.55MHzE-UTRAsignal15PREFSENS+6dB*-522.55MHzE-UTRAsignal20PREFSENS+6dB*-522.55MHzE-UTRAsignalNote*: PREFSENSdependsonthechannelbandwidthasspecifiedinTable

7.2-1.LTE协议主要内容RRU根本原理射频根本原理目录FDDRRU根本原理框图TDDRRU根本原理框图FDDRRU结构图LDDLF1PA20F1

电源模块TR1单板电源接口天馈接口AISG接口调试接口PIB单板并柜接口〔LTERRU已经取消〕光口FDDRRU内部硬件关系图TDDRRU结构图TDDRRU内部硬件关系图LTE协议主要内容RRU根本原理射频根本原理目录发射机〔高中频〕典型系统框图发射机〔零中频〕典型系统框图接收机典型系统框图频综/时钟〔锁相环〕典型框图射频的主要性能指标工作频率增益及增益平坦度噪声系数P1dBIP3相位噪声射频的主要性能指标—增益及增益平坦度增益：指输出功率和输入功率的比值，单位常用“dB〞。增益平坦度指一定温度下，在整个工作频率