CONTENTS
Prefacexi
Acknowledgmentsxiii
1 Digital Television Transmission Standards 1
ATSCterrestrialtransmissionstandard,vestigialsidebandmodulation,
DVB-Ttransmissionstandard,ISDB-Ttransmissionstandard,channel
allocations,antennaheightandpower,MPEG-2
2 Performance Objectives for Digital Television 21
Systemnoise,externalnoisesources,transmissionerrors,errorvector
magnitude,eyepattern,interference,cochannelinterference,adjacent
channelinterference,analogtodigitalTV,transmitterrequirements
3 Channel Coding and Modulation for Digital Television 43
Datasynchronization,randomization/scrambling,forwarderror
correction,interleaving,innercode,framesyncinsertion,quadrature
modulation,8VSB,bandwidth,errorrate,COFDM,flexibility,
bandwidth
vii
viii CONTENTS
4 Transmitters for Digital Television 67
Precorrectionandequalization,upconversion,precisefrequency
control,RFamplifiers,solid-statetransmitters,RFamplifiermodules,
powersupplies,powercombiners,Wilkinsoncombiner,ring
combiner,starpointcombiner,cooling,automaticgainorlevelcontrol,
acdistribution,transmittercontrol,tubetransmitters,tubeor
solid-statetransmitters,performancequality,retrofitofanalog
transmittersforDTV
5 Radio-Frequency Systems for Digital Television 98
Constant-impedancefilter,outputfilters,ellipticfunctionfilters,
cavities,channelcombiners
6 Transmission Line for Digital Television 117
Fundamentalparameters,efficiency,effectofVSWR,systemAERP,
rigidcoaxialtransmissionlines,dissipation,attenuation,andpower
handling,higher-ordermodes,peakpowerrating,frequencyresponse,
standardlengths,corrugatedcoaxialcables,windload,waveguide,
bandwidth,waveguideattenuation,powerrating,frequencyresponse,
sizetrade-offs,whichline?waveguideorcoax?pressurization
7 Transmitting Antennas for Digital Television 150
Antennapatterns,elevationpattern,mechanicalstability,nullfill,
azimuthpattern,slottedcylinderantennas,gainanddirectivity,power
handling,antennaimpedance,bandwidthandfrequencyresponse,
multiple-channeloperation,typesofdigitaltelevisionbroadcast
antennas,antennamounting
8 Radio-Wave Propagation 199
Free-spacepropagation,distancetotheradiohorizon,refraction,
multipath,groundreflections,surfaceroughness,effectofearth’s
curvature,Fresnelzones,lineardistortions,diffraction,fading,
undesiredsignal,fieldtests,Charlotte,NorthCarolina,Chicago,
Illinois,Raleigh,NorthCarolina
CONTENTS ix
9 Test and Measurement for Digital Television 245
Powermeasurements,averagepowermeasurement,calorimetry,
powermeters,peakpowermeasurement,measurementuncertainty,
testingdigitaltelevisiontransmitters
SymbolsandAbbreviations251
Index261 |