铁路电视单频网建设以及测试方案研究

上海交通大学硕士学位论文铁路电视单频网建设以及测试方案研究姓名：朱秋林申请学位级别：硕士专业：电子与通信工程指导教师：张海滨;钱良200801015ADTB-TAdvancedDigitalTelevisionBroadcastingSystem–TerrestrialARQAutomaticRepeatRequestASIAsynchronousSerialInterfaceATSCAdvancedTelevisionSystemsCommittee()AVSAudioandVideocodingStandardBNCBayonetNutConnectorCDMACodeDivisionMultipleAccessDABDigitalAudioBroadcastingDTMBDigitalTerrestrialMediaBroadcasting()DVBDigitalVideoBroadcastingDVDDigitalVideoDiscEIRPEffectiveIsotropicRadiatedPowerGPRSGeneralPacketRadioServiceGPSGlobalPositioningSystemGSMGlobalSystemsforMobilecommunicationsIPInternetProtocolIPTVInternetProtocolTelevisionLCDLiquidCrystalDisplayMIPMega-frameInitial-izationPacketMPEGMovingPicturesExpertGroupOFDMOrthogonalFrequencyDevisionMultiplexingOQAMOrthogonalmulti-levelQuadratureAmplitudeModulationPNPseudo-randomSFNSingleFrequencyNetworkSTSSatelliteTransmissionSystemTSTransportStreamUHFUltra-HighFrequencyVHFVeryHighFrequency1200681DTMBOFDMC=3780C=1C=1ADTB-TATSC2DVB-TADTB-TRailwayADTB-RailwaySFNADTB-RDVB-SSFNADTB-R3THERESEARCHONCONSTRUCTIONOFSFNINRAILWAYTELEVISIONSYSTEMESIGNANDTESTSINGLEABSTRACTTherailwayisnotonlythemajorpartofthenationaltransportinchina,butalsothechiefmethodthecivilianchoosetotravel.Howeverinordertoprovidecomfortableenvironmentandpublicinformationservice,differentkindofTVset,telephone,computersystemshadbeenfixedinairplaneandship.Whenrefertotherailway,thathasthelengthof70,000kmandthepassengertransportof1,600,000,000person-timeperyear,it’sstillablankofthetelevisionbroadcastcoverage.Confrontedwiththecompetitionfromtheairway,waterwayandhighwaytransportation,therailwayshouldsolvetheproblemthatpassengertrainespeciallythelong-distancetrainhasnoTVsetonit.Theresearchondigitalvideobroadcastinghasbeencarriedoutinabroadforseveralyears.Inourcountry,standardfordigitaltelevisionterrestrialbroadcastingsystemhadbeenpublishedinAugust,2006.Inthisstandard,bothOFDM(C=3780)andsignalcarrier(C=1)areexist.SimilarwithOFDMsystem,DTTBstandardforChinacanbeusedinverycomplexterrain.Italsocanbeusedinhighspeedvehicle,likethesignalcarriersystem.DTTBstandardforChinaisthemostpromisingsolutionforChineserailwayTV.DTTBstandard(C=1)hasstrongpointssuchasbetterC/Nperformance,lowminimumrequirementinputlevels,lowtransmitterpower,immunitytoanalogueanddigitalsignal.InordertosolvetheproblemsinChineserailwayTV,weimprovetheDTTBstandardandgetaupgradedone-ADTB-R.ADTB-Rcanbeusedinhighspeedrailway,4insurethereceptionqualityintrain.BasedontheADTB-TsystemdevelopedbyShanghaiJiaoTongUniversity,therailwaytelevisionSFNsystemtakesDVB-Sasprimarydistributionnetwork,whichalsobecomposedofOpticalfiberandmicrowaveatsomecertainarea.Withthenationalwiderailwaycoverage,thesystemcanprovideliveTVprogramfromCCTVwiththereceiverfixedinthetrain.ThereliabledesigninsuresthesynchronizationoftherailwayTVsignalbroadcastandthecontinuityoftheTVprogram.KEYWORDS:SFN,railway,digitalTV,ADTB-R81.150002500161-1601-1[1]Fig1-1GrowthpredictionofChinarailwayfloatingpopulationCCTV92000“”13⁄1428DVD200410200741855%[2]1-2111-2Fig1-2ArchitectureofChinarailwayinformation161.21.2.1198612[3][4]VHFUHFDELPH——DELPH1.2.21.2.2.11998DVB-TATSCDVB-T/MPEG2/4H.264AVSDVB-TDAB13DVB-SDVB-H[5][6]GSMWCDMADVB-CDABT-DMBDVB-SIIDVB-T/Ha)DVB-CDVB-Cb)DABT-DMB300kbps1710-310-6DABc)T-DMBDAB14MPEG-4ER-BSAC/HEAACV2H.264/AVCER-BSAC30352*288(CIF)384kbpsVCD60720*576T-DMB7[7]d)DVB-TDVB-TOFDM[8]OFDM150/[9]e)DVB-HDVB-TDVB-T384Kbps7DVB-Tf)DVB-SDVB-SDVB-TDVB-SDVB-TDVB-SIIDVB-S15MediaflowDVB-H200751.2.2.2200020022004CDMACDMACDMA200681DTMBOFDMC=3780C=1C=116T-DMBDVB-HMediaflowT-MMBDMB-THT-MMBT-DMBDVB-SIIDVB-SDMB-THC=3780DVB-HDVB-T1.2.2.31802[10]DABT-DMBT-MMB2M802ARQ802.16120/17802280200430+=1.31.3.11820066350/GSM-RBit55341960720*5762-4CCTV+++H.2643-6Mbps1.3.2ADTB-RADTB-T[11]ATSCDVB-TADTB-TRailwayADTB-Railway[12]ADTB-RADTB-R1.3.3ADTB-RIPTVSFNADTB-RDVB-SSFN201.41.53+11.63+1212.12.1.1[13]0dB2-12-1Fig2-1SketchofreceivingmultipathgroupADTB-R0dB220dB0dB0dB1us2us6dB2-22-32-2Fig2-2Sketchofreceiversignallevelfromadjacentsignaltransmittingnettowerarrival2-3Fig2-3Sketchofdelaymultipath2.1.2TS17us10km0us23[14]—MIPTSADTB-T2.1.3ATSCDVB-TADTB-R0dB[15]24DVB-T430/RS[16]2.2——ADTB-R2.2.1ADTBTATSCDVB-TADTB-TRailwayADTB-Railway252.2.2ADTB-R[17]ADTB-R7662PNADTBT820sADTB-R7662PNADTB-RADTB-R821482821622482822-4,82813,828,828,8281413114131162-4ADTB-RFig2-4StandarddatastructuresofADTB-R26ADTB-RRS4-OQAM14-OQAMT0.54-OQAMMPEG-22MPEG-20x474-OQAM-TMPEG-24MPEG-20x47ADTB-R2-5RSTCMRSTCMRSPreEQOQAMSYNC4OQAM16OQAM64OQAM2-5ADTB-TFig2-5SystemdiagramofADTB-R2.3ADTB-R273+13.13+13-13-2[18]3-2MPEG-2ADTB-TADTB-TGPS10MHz1ppsGPS10MHz1ppsGPS10MHz1ppsMPEG-2TSMPEG-2TSMPEG-2TS3-1Fig3-1SketchofthemoduleofsinglefrequencynetworkMPEG2ADTB-TADTB-TADTB-TRFRFRFAVTVTSDVB-SDVB-SDVB-SDVB-STSMIP3-2Fig3-2SketchofSFNarchitecturethatdeliverybysatellitecommunicationnetworks28LiCavGPRS3+1MPEG-2GPSMPEG-2TSTSLiCavDVB-SDVB-SADTB-TGPSIPTVGPSGPS1pps10M1s11pps28.571428MHz28.571428MHz35ns1pps028.571428MHz1pps10MHz35ns3.23.2.1129DVB-S230ADBT-T3.2.2LiCav[19]1MIPTSMIPSTSTSADTB-T/MPEG-2TS2ADTB-TTSADTB-TADTB-TTSADTB-T36.15