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首页 欧洲无限通讯标准

欧洲无限通讯标准

欧洲无限通讯标准

iam837
2013-01-10 0人阅读 举报 0 0 暂无简介

简介:本文档为《欧洲无限通讯标准pdf》,可适用于IT/计算机领域

ETSIENV()EuropeanStandard(Telecommunicationsseries)DigitalVideoBroadcasting(DVB)Framingstructure,channelcodingandmodulationfordigitalterrestrialtelevisionEuropeanBroadcastingUnionUnionEuropéennedeRadioTélévisionEBU·UERETSIETSIENV()ReferenceRENJTCDVBKeywordsDVB,digital,video,broadcasting,terrestrial,MPEG,TV,audio,dataETSIRoutedesLuciolesFSophiaAntipolisCedexFRANCETel:Fax:SiretN°NAFCAssociationàbutnonlucratifenregistréeàlaSousPréfecturedeGrasse()N°ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http:wwwetsiorgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprintInanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF)Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariatUsersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatusInformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp:wwwetsiorgtbstatusIfyoufinderrorsinthepresentdocument,sendyourcommentto:editoretsifrCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermissionThecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia©EuropeanTelecommunicationsStandardsInstitute©EuropeanBroadcastingUnionAllrightsreservedETSIETSIENV()ContentsIntellectualPropertyRightsForewordScopeReferencesDefinitions,symbolsandabbreviationsDefinitionsSymbolsAbbreviationsBaselinesystemGeneralconsiderationsInterfacingChannelcodingandmodulationTransportmultiplexadaptationandrandomizationforenergydispersalOutercodingandouterinterleavingInnercodingInnerinterleavingBitwiseinterleavingSymbolinterleaverSignalconstellationsandmappingOFDMframestructureReferencesignalsFunctionsandderivationDefinitionofreferencesequenceLocationofscatteredpilotcellsLocationofcontinualpilotcarriersAmplitudesofallreferenceinformationTransmissionParameterSignalling(TPS)ScopeoftheTPSTPStransmissionformatInitializationSynchronizationTPSlengthindicatorFramenumberConstellationHierarchyinformationCoderatesGuardIntervalsTransmissionmodeCellidentifierErrorprotectionofTPSTPSmodulationNumberofRSpacketsperOFDMsuperframeSpectrumcharacteristicsandspectrummaskSpectrumcharacteristicsOutofbandspectrummask(forMHzchannels)CentrefrequencyofRFsignal(forMHzUHFchannels)ETSIETSIENV()AnnexA(informative):SimulatedsystemperformanceforMHzchannelsAnnexB(informative):DefinitionofPandFAnnexC(informative):InterleavingexampleAnnexD(informative):GuidelinestoimplementationoftheemittedsignalDUseoftheFFTDChoiceof"baseband"centrefrequencyDOtherpotentialdifficultiesAnnexE(normative):ValuesforMHzandMHzchannelsHistoryETSIETSIENV()IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSITheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnonmembers,andcanbefoundinETSISR:"IntellectualPropertyRights(IPRs)Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariatLatestupdatesareavailableontheETSIWebserver(http:wwwetsiorgipr)PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSINoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocumentForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyJointTechnicalCommittee(JTC)oftheEuropeanBroadcastingUnion(EBU),ComitéEuropéendeNormalisationElectrotechnique(CENELEC)andtheEuropeanTelecommunicationsStandardsInstitute(ETSI)NOTE:TheEBUETSIJTCBroadcastwasestablishedintocoordinatethedraftingofstandardsinthespecificfieldofbroadcastingandrelatedfieldsSincetheJTCBroadcastbecameatripartitebodybyincludingintheMemorandumofUnderstandingalsoCENELEC,whichisresponsibleforthestandardizationofradioandtelevisionreceiversTheEBUisaprofessionalassociationofbroadcastingorganizationswhoseworkincludesthecoordinationofitsmembers'activitiesinthetechnical,legal,programmemakingandprogrammeexchangedomainsTheEBUhasactivemembersinaboutcountriesintheEuropeanbroadcastingareaitsheadquartersisinGenevaEuropeanBroadcastingUnionCHGRANDSACONNEX(Geneva)SwitzerlandTel:Fax:FoundedinSeptember,theDVBProjectisamarketledconsortiumofpublicandprivatesectororganizationsinthetelevisionindustryItsaimistoestablishtheframeworkfortheintroductionofMPEGbaseddigitaltelevisionservicesNowcomprisingoverorganizationsfrommorethancountriesaroundtheworld,DVBfostersmarketledsystems,whichmeettherealneeds,andeconomiccircumstances,oftheconsumerelectronicsandthebroadcastindustryNationaltranspositiondatesDateofadoptionofthisEN:DecemberDateoflatestannouncementofthisEN(doa):MarchDateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dope):SeptemberDateofwithdrawalofanyconflictingNationalStandard(dow):SeptemberETSIETSIENV()ScopeThepresentdocumentdescribesabaselinetransmissionsystemfordigitalterrestrialTeleVision(TV)broadcastingItspecifiesthechannelcodingmodulationsystemintendedfordigitalmultiprogrammeLDTVSDTVEDTVHDTVterrestrialservicesThescopeisasfollows:itgivesageneraldescriptionoftheBaselineSystemfordigitalterrestrialTVitidentifiestheglobalperformancerequirementsandfeaturesoftheBaselineSystem,inordertomeettheservicequalitytargetsitspecifiesthedigitallymodulatedsignalinordertoallowcompatibilitybetweenpiecesofequipmentdevelopedbydifferentmanufacturersThisisachievedbydescribingindetailthesignalprocessingatthemodulatorside,whiletheprocessingatthereceiversideisleftopentodifferentimplementationsolutionsHowever,itisnecessaryinthistexttorefertocertainaspectsofreceptionReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc)ornonspecific•Foraspecificreference,subsequentrevisionsdonotapply•Foranonspecificreference,thelatestversionapplies•AnonspecificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumberISOIEC:"InformationtechnologyGenericcodingofmovingpicturesandassociatedaudioinformationParts(Systems),(Video)and(Audio)"ETSIEN:"DigitalVideoBroadcasting(DVB)Framingstructure,channelcodingandmodulationforGHzsatelliteservices"ETSIEN:"DigitalVideoBroadcasting(DVB)Framingstructure,channelcodingandmodulationforcablesystems"ETSIEN:"DigitalVideoBroadcasting(DVB)SpecificationforServiceInformation(SI)inDVBsystems"Definitions,symbolsandabbreviationsDefinitionsForthepurposesofthepresentdocument,thefollowingdefinitionapplies:constraintlength:numberofdelayelementsintheconvolutionalcoderETSIETSIENV()SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:A(e)outputvectorfrominnerbitinterleavereae,wbitnumberwofinnerbitinterleaveroutputstreameαconstellationratiowhichdeterminestheQAMconstellationforthemodulationforhierarchicaltransmissionB(e)inputvectortoinnerbitinterleaverebe,wbitnumberwofinnerbitinterleaverinputsteamebe,dooutputbitnumberdoofdemultiplexedbitstreamnumbereoftheinnerinterleaverdemultiplexerbibitnumberiofthecellidentifiercm,l,kcomplexcellforframeminOFDMsymbollatcarrierkC'kComplexmodulationforareferencesignalatcarrierkC'l,kComplexmodulationforaTPSsignalatcarrierkinsymbollCNCarriertoNoiseratio∆timedurationoftheguardintervaldfreeconvolutionalcodefreedistancefccentrefrequencyoftheemittedsignalG,GconvolutionalcodeGeneratorpolynomialsg(x)ReedSolomoncodegeneratorpolynomialh(x)BCHcodegeneratorpolynomialH(q)innersymbolinterleaverpermutationHe(w)innerbitinterleaverpermutationiprioritystreamindexIInterleavingdepthoftheouterconvolutionalinterleaverI,I,I,I,I,IinnerInterleaversjbranchindexoftheouterinterleaverkcarriernumberindexineachOFDMsymbolKnumberofactivecarriersintheOFDMsymbolKmin,KmaxcarriernumberofthelowerandlargestactivecarrierrespectivelyintheOFDMsignallOFDMsymbolnumberindexinanOFDMframemOFDMframenumberindexm'OFDMsuperframenumberindexMconvolutionalinterleaverbranchdepthforj=,M=NIntransportstreamsyncbytenumberNlengthoferrorprotectedpacketinbytesNmaxinnersymbolinterleaverblocksizepscatteredpilotinsertionindexp(x)RScodefieldgeneratorpolynomialPk(f)PowerspectraldensityforcarrierkP(n)interleavingPatternoftheinnersymbolinterleaverricoderateforprioritylevelisiTPSbitindextnumberofbyteswhichcanbecorrectedbytheReedSolomondecoderTelementaryTimeperiodTSdurationofanOFDMsymbolTFTimedurationofaframeTUTimedurationoftheuseful(orthogonal)partofasymbol,withouttheguardintervalubitnumberingindexvnumberofbitspermodulationsymbolwkvalueofreferencePRBSsequenceapplicabletocarrierkxdiinputbitnumberditotheinnerinterleaverdemultiplexerx'dihighpriorityinputbitnumberditotheinnerinterleaverdemultiplexerx"dilowpriorityinputbitnumberditotheinnerinterleaverdemultiplexerETSIETSIENV()YoutputvectorfrominnersymbolinterleaverY'intermediatevectorofinnersymbolinterleaveryqbitnumberqofoutputfrominnersymbolinterleavery'qbitnumberqofintermediatevectorofinnersymbolinterleaverzcomplexmodulationsymbol*complexconjugateAbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ACIAdjacentChannelInterferenceBCHBoseChaudhuriHocquenghemcodeBERBitErrorRatioDBPSKDifferentialBinaryPhaseShiftKeyingDFTDiscreteFourierTransformDVBDigitalVideoBroadcastingDVBTDVBTerrestrialEDTVEnhancedDefinitionTeleVisionFFTFastFourierTransformFIFOFirstIn,FirstOutshiftregisterHDTVHighDefinitionTeleVisionHEXHEXadecimalnotationHPHighPrioritybitstreamIFIntermediateFrequencyIFFTInverseFastFourierTransformLDTVLimitedDefinitionTeleVisionLPLowPrioritybitstreamMPEGMovingPictureExpertsGroupMSBMostSignificantBitMUXMUltipleXNICAMNearInstantaneousCompandedAudioMultiplexOCTOCTalnotationOFDMOrthogonalFrequencyDivisionMultiplexingPALPhaseAlternatingLinePRBSPseudoRandomBinarySequenceQAMQuadratureAmplitudeModulationQEFQuasiErrorFreeQPSKQuaternaryPhaseShiftKeyingRFRadioFrequencyRSReedSolomonSDTVStandardDefinitionTeleVisionSECAMSystèmeSequentielCouleurAMémoireSFNSingleFrequencyNetworkTPSTransmissionParameterSignallingTVTeleVisionUHFUltraHighFrequencyVHFVeryHighFrequencyETSIETSIENV()BaselinesystemGeneralconsiderationsThesystemisdefinedasthefunctionalblockofequipmentperformingtheadaptationofthebasebandTVsignalsfromtheoutputoftheMPEGtransportmultiplexer,totheterrestrialchannelcharacteristicsThefollowingprocessesshallbeappliedtothedatastream(seefigure):transportmultiplexadaptationandrandomizationforenergydispersaloutercoding(ieReedSolomoncode)outerinterleaving(ieconvolutionalinterleaving)innercoding(iepuncturedconvolutionalcode)innerinterleavingmappingandmodulationOrthogonalFrequencyDivisionMultiplexing(OFDM)transmissionThesystemisdirectlycompatiblewithMPEGcodedTVsignalsISOIECSincethesystemisbeingdesignedfordigitalterrestrialtelevisionservicesto

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