SpreadingAndmodulationWCDMA扩频与调制Rel7协议.docx
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SpreadingAndmodulationWCDMA扩频与调制Rel7协议
3GPPTS25.213V7.7.0(2009-12)
TechnicalSpecification
3rdGenerationPartnershipProject;
TechnicalSpecificationGroupRadioAccessNetwork;
Spreadingandmodulation(FDD)
(Release7)
Thepresentdocumenthasbeendevelopedwithinthe3rdGenerationPartnershipProject(3GPPTM)andmaybefurtherelaboratedforthepurposesof3GPP.
Thepresentdocumenthasnotbeensubjecttoanyapprovalprocessbythe3GPPOrganisationalPartnersandshallnotbeimplemented.
ThisSpecificationisprovidedforfuturedevelopmentworkwithin3GPPonly.TheOrganisationalPartnersacceptnoliabilityforanyuseofthisSpecification.
Specificationsandreportsforimplementationofthe3GPPTMsystemshouldbeobtainedviathe3GPPOrganisationalPartners'PublicationsOffices.
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Keywords
UMTS,radio,modulation,layer 1
3GPP
Postaladdress
3GPPsupportofficeaddress
650RoutedesLucioles-SophiaAntipolis
Valbonne-FRANCE
Tel.:
+33492944200Fax:
+33493654716
Internet
http:
//www.3gpp.org
CopyrightNotification
Nopartmaybereproducedexceptasauthorizedbywrittenpermission.
Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.
©2009,3GPPOrganizationalPartners(ARIB,ATIS,CCSA,ETSI,TTA,TTC).
Allrightsreserved.
UMTS™isaTradeMarkofETSIregisteredforthebenefitofitsmembers
3GPP™isaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners
LTE™isaTradeMarkofETSIcurrentlybeingregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners
GSM®andtheGSMlogoareregisteredandownedbytheGSMAssociation
Contents
Foreword5
1Scope6
2References6
3Symbolsandabbreviations6
3.1Symbols6
3.2Abbreviations6
4Uplinkspreadingandmodulation7
4.1Overview7
4.2Spreading7
4.2.1Dedicatedphysicalchannels7
4.2.1.1DPCCH/DPDCH9
4.2.1.2HS-DPCCH10
4.2.1.3E-DPDCH/E-DPCCH11
4.2.2PRACH17
4.2.2.1PRACHpreamblepart17
4.2.2.2PRACHmessagepart17
4.2.3Void18
4.3Codegenerationandallocation18
4.3.1Channelisationcodes18
4.3.1.1Codedefinition18
4.3.1.2Codeallocationfordedicatedphysicalchannels19
4.3.1.2.1CodeallocationforDPCCH/DPDCH19
4.3.1.2.2CodeallocationforHS-DPCCH19
4.3.1.2.3CodeallocationforE-DPCCH/E-DPDCH19
4.3.1.3CodeallocationforPRACHmessagepart20
4.3.1.4Void20
4.3.1.5Void20
4.3.2Scramblingcodes20
4.3.2.1General20
4.3.2.2Longscramblingsequence20
4.3.2.3Shortscramblingsequence21
4.3.2.4Dedicatedphysicalchannelsscramblingcode22
4.3.2.5PRACHmessagepartscramblingcode22
4.3.2.6Void23
4.3.2.7Void23
4.3.3PRACHpreamblecodes23
4.3.3.1Preamblecodeconstruction23
4.3.3.2Preamblescramblingcode23
4.3.3.3Preamblesignature23
4.3.4Void24
4.4Modulation24
4.4.1Modulatingchiprate24
4.4.2Modulation24
5Downlinkspreadingandmodulation25
5.1Spreading25
5.1.1Modulationmapper25
5.1.1.1QPSK25
5.1.1.216QAM26
5.1.1.364QAM26
5.1.2Channelisation27
5.1.3IQcombining27
5.1.4Scrambling27
5.1.5Channelcombining27
5.2Codegenerationandallocation28
5.2.1Channelisationcodes28
5.2.2Scramblingcode29
5.2.3Synchronisationcodes30
5.2.3.1Codegeneration30
5.2.3.2CodeallocationofSSC31
5.3Modulation33
5.3.1Modulatingchiprate33
5.3.2Modulation33
AnnexA(informative):
GeneralisedHierarchicalGolaySequences34
A.1Alternativegeneration34
AnnexB(informative):
Changehistory35
Foreword
ThisTechnicalSpecification(TS)hasbeenproducedbythe3rdGenerationPartnershipProject(3GPP).
ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithintheTSGandmaychangefollowingformalTSGapproval.ShouldtheTSGmodifythecontentsofthepresentdocument,itwillbere-releasedbytheTSGwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:
Versionx.y.z
where:
xthefirstdigit:
1presentedtoTSGforinformation;
2presentedtoTSGforapproval;
3orgreaterindicatesTSGapproveddocumentunderchangecontrol.
ytheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.
zthethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthedocument.
1Scope
ThepresentdocumentdescribesspreadingandmodulationforUTRAPhysicalLayerFDDmode.
2References
Thefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.
∙Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornonspecific.
∙Foraspecificreference,subsequentrevisionsdonotapply.
∙Foranon-specificreference,thelatestversionapplies.Inthecaseofareferencetoa3GPPdocument(includingaGSMdocument),anon-specificreferenceimplicitlyreferstothelatestversionofthatdocumentinthesameReleaseasthepresentdocument.
[1]3GPP TS 25.201:
"Physicallayer-generaldescription".
[2]3GPP TS 25.211:
"Physicalchannelsandmappingoftransportchannelsontophysicalchannels(FDD)."
[3]3GPP TS 25.101:
"UERadiotransmissionandReception(FDD)".
[4]3GPP TS 25.104:
"UTRA(BS)FDD;RadiotransmissionandReception".
[5]3GPPTS 25.308:
"UTRAHighSpeedDownlinkPacketAccess(HSDPA);Overalldescription".
[6]3GPPTS 25.214:
"Physicallayerprocedures(FDD)".
[7]3GPPTS 25.212:
"Multiplexingandchannelcoding(FDD)".
3Symbolsandabbreviations
3.1Symbols
Forthepurposesofthepresentdocument,thefollowingsymbolsapply:
Cch,SF,n:
n:
thchannelisationcodewithspreadingfactorSF
Cpre,n,s:
PRACHpreamblecodeforn:
thpreamblescramblingcodeandsignatures
Csig,s:
PRACHsignaturecodeforsignatures
Sdpch,n:
n:
thDPCCH/DPDCHuplinkscramblingcode
Sr-pre,n:
n:
thPRACHpreamblescramblingcode
Sr-msg,n:
n:
thPRACHmessagescramblingcode
Sdl,n:
DLscramblingcode
Cpsc:
PSCcode
Cssc,n:
n:
thSSCcode
3.2Abbreviations
Forthepurposesofthepresentdocument,thefollowingabbreviationsapply:
16QAM16QuadratureAmplitudeModulation
64QAM64QuadratureAmplitudeModulation
AICHAcquisitionIndicatorChannel
BCHBroadcastControlChannel
CCPCHCommonControlPhysicalChannel
CPICHCommonPilotChannel
DCHDedicatedChannel
DPCHDedicatedPhysicalChannel
DPCCHDedicatedPhysicalControlChannel
DPDCHDedicatedPhysicalDataChannel
E-AGCHE-DCHAbsoluteGrantChannel
E-DPCCHE-DCHDedicatedPhysicalControlChannel
E-DPDCHE-DCHDedicatedPhysicalDataChannel
E-HICHE-DCHHybridARQIndicatorChannel
E-RGCHE-DCHRelativeGrantChannel
FDDFrequencyDivisionDuplex
F-DPCHFractionalDedicatedPhysicalChannel
HS-DPCCHDedicatedPhysicalControlChannel(uplink)forHS-DSCH
HS-DSCHHighSpeedDownlinkSharedChannel
HS-PDSCHHighSpeedPhysicalDownlinkSharedChannel
HS-SCCHSharedControlPhysicalChannelforHS-DSCH
MBSFNMBMSoveraSingleFrequencyNetwork
McpsMegaChipPerSecond
MICHMBMSIndicationChannel
OVSFOrthogonalVariableSpreadingFactor(codes)
PICHPageIndicationChannel
PRACHPhysicalRandomAccessChannel
PSCPrimarySynchronisationCode
RACHRandomAccessChannel
SCHSynchronisationChannel
SSCSecondarySynchronisationCode
SFSpreadingFactor
UEUserEquipment
4Uplinkspreadingandmodulation
4.1Overview
Spreadingisappliedtothephysicalchannels.Itconsistsoftwooperations.Thefirstisthechannelisationoperation,whichtransformseverydatasymbolintoanumberofchips,thusincreasingthebandwidthofthesignal.ThenumberofchipsperdatasymboliscalledtheSpreadingFactor(SF).Thesecondoperationisthescramblingoperation,whereascramblingcodeisappliedtothespreadsignal.
Withthechannelisation,datasymbolsonso-calledI-andQ-branchesareindependentlymultipliedwithanOVSFcode.Withthescramblingoperation,theresultantsignalsontheI-andQ-branchesarefurthermultipliedbycomplex-valuedscramblingcode,whereIandQdenoterealandimaginaryparts,respectively.
4.2Spreading
4.2.1Dedicatedphysicalchannels
ThepossiblecombinationsofthemaximumnumberofrespectivededicatedphysicalchannelswhichmaybeconfiguredsimultaneouslyforaUEinadditiontotheDPCCHarespecifiedintable0.TheactualUEcapabilitymaybelowerthanthevaluesspecifiedintable0;theactualdedicatedphysicalchannelconfigurationisindicatedbyhigherlayersignalling.TheactualnumberofconfiguredDPDCHs,denotedNmaxdpdch,isequaltothelargestnumberofDPDCHsfromalltheTFCsintheTFCS.Nmaxdpdchisnotchangedbyframe-by-frameTFCIchangeortemporaryTFCrestrictions.
Table0:
Maximumnumberofsimultaneously-configureduplinkdedicatedchannels
DPDCH
HS-DPCCH
E-DPDCH
E-DPCCH
Case1
6
1
-
-
Case2
1
1
2
1
Case3
-
1
4
1
Figure1illustratestheprincipleofthespreadingofuplinkdedicatedphysicalchannels(DPCCH,DPDCHs,HS-DPCCH,E-DPCCH,E-DPDCHs).
IncaseofBPSKmodulation,thebinaryinputsequencesofallphysicalchannelsareconvertedtorealvaluedsequences,i.e.thebinaryvalue"0"ismappedtotherealvalue+1,thebinaryvalue"1"ismappedtotherealvalue–1,andthevalue"DTX"(HS-DPCCHonly)ismappedtotherealvalue0.
Incaseof4PAMmodulation,thebinaryinputsequencesofallE-DPDCHphysicalchannelsareconvertedtorealvaluedsequences,i.e.asetoftwoconsecutivebinarysymbolsnk,nk+1(withkmod2=0)ineachbinarysequenceisconvertedtoarealvaluedsequencefollowingthemappingdescribedinTable0A.
Table0A:
MappingofE-DPDCH
with4PAMmodulation
nk,nk+1
Mappedrealvalue
00
0.4472
01
1.3416
10
-0.4472