[Ofcom] Technical Evolution of the DTT Platform.pdf

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1、TechnicalEvolutionoftheDTTPlatformAnindependentreportbyZetaCast,commissionedbyOfcomPrincipalAuthors:KenMcCann,AdrianaMatteiContributingAuthors:JeffGledhill,GuyHirsonVersion:1.3Date:28January2012CommercialInConfidenceCONTENTS1EXECUTIVESUMMARYANDCONCLUSIONS52VIDEOFORMATSFORDISPLAYANDPRODUCTION82.1Incr

2、easingVideoResolution82.1.1HDTVand1080p82.1.2UltraHighDefinitionTV(UHDTV)82.1.3PerceptualLimittoResolution92.2OtherDisplayEnhancements92.2.1Stereoscopicand3DDisplayTechniques92.2.2IncreasingFrameRate102.2.3IncreasingAspectRatio112.2.4IncreasingChrominanceResolution112.2.5IncreasingBitdepth112.2.6Imp

3、rovingColourspace122.3MarketTrendsinDisplaysandProduction122.3.1DisplayResolutionandBroadcastResolution122.3.2DisplayMarketTrends122.3.3ProductionMarketTrends133VIDEOANDAUDIOCOMPRESSION153.1CurrentVideoCodingStandards153.1.1MPEG-2andH.264/AVC153.1.2UsingH.264/AVCforStereoscopic3DTV153.2EmergingVideo

4、CodingStandards163.2.1HighEfficiencyVideoCoding(HEVC)163.2.2UsingHEVCforStereoscopic3DTV183.3VideoBitratesinPractice183.3.1VideoBitrateChangesoverTime183.3.2StatisticalMultiplexing193.4AudioCompressionCoding204TERRESTRIALCHANNELCODINGANDMODULATION224.1IntroductiontotheDVBFamilyofTerrestrialChannelCo

5、ding224.1.1DVB-T224.1.2DVB-T2234.2ThetransitionfromDVB-TtoDVB-T223CommercialInConfidencePage24.3ExtensionstoDVB-T2services244.3.1AlamoutiCodingandFutureExtensionFrames244.3.2DVB-T2Lite244.3.3DVB-T2Legacyissues244.4FutureTerrestrialBroadcastingSpecifications-DVB-T3?254.4.1DVB-T2Evolution254.4.2MIMO25

6、5EVOLUTIONOFDTTPLATFORM265.1TimescaleTrendsinTVTechnology265.1.1ReplacementCycleforTVReceivingEquipment265.1.2GenerationsofTVBroadcastingTechnology275.2GenerationsofTVTechnology296ALTERNATIVETVPLATFORMS316.1BroadbandIPNetworks316.1.1Overview316.1.2Wired316.1.3Wireless326.1.4ConclusionsonBroadbandIPN

7、etworks336.2TVdeliveryoverIP346.2.1Overview346.2.2ManagedIPTV346.2.3UnmanagedInternetservices356.3TVBroadcastingviaSatellite366.3.2SatelliteBroadcastingPlatform366.4TVBroadcastingviaCable376.4.2CableB