TR 101 190 V1.3.2 (2011-05) Technical Report
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ETSI TR 101 190 V1.3.2 (2011-05) Technical Report Digital Video Broadcasting (DVB); Implementation guidelines for DVB terrestrial services; Transmission aspects 2 ETSI TR 101 190 V1.3.2 (2011-05) Reference RTR/JTC-DVB-304 Keywords broadcasting, digital, DVB, MPEG, TV, video ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). 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ETSI 3 ETSI TR 101 190 V1.3.2 (2011-05) Contents Intellectual Property Rights ................................................................................................................................ 6 Foreword ............................................................................................................................................................. 6 Introduction ........................................................................................................................................................ 7 1 Scope ........................................................................................................................................................ 9 2 References ................................................................................................................................................ 9 2.1 Normative references ......................................................................................................................................... 9 2.2 Informative references ........................................................................................................................................ 9 3 Symbols and abbreviations ..................................................................................................................... 10 3.1 Symbols ............................................................................................................................................................ 10 3.2 Abbreviations ................................................................................................................................................... 11 4 DVB-T system - outline ......................................................................................................................... 13 4.1 Modes of operation ........................................................................................................................................... 13 4.1.1 Choice of modulation scheme and inner coding ......................................................................................... 21 4.1.2 Choice of number of carriers ...................................................................................................................... 21 4.1.3 Choice between hierarchical and non-hierarchical mode ........................................................................... 22 4.1.3.1 Non-hierarchical mode .......................................................................................................................... 23 4.1.3.2 Hierarchical mode ................................................................................................................................. 24 4.1.4 TPS explanation (use of TPS) ..................................................................................................................... 25 4.2 Transmitter input signal .................................................................................................................................... 26 4.2.1 MPEG-2-TS multiplex signal ..................................................................................................................... 27 4.2.1.1 Services and bit-rates ............................................................................................................................ 27 4.2.1.2 Some technical background .................................................................................................................. 27 4.2.2 Relation to DVB-C and DVB-S signals ...................................................................................................... 28 4.3 Transmitter output signal .................................................................................................................................. 28 4.3.1 Power definition as RMS value .................................................................................................................. 28 4.3.2 Spectrum mask to limit adjacent channel interference................................................................................ 28 4.3.3 Characterization of behaviour for planning by protection ratios ................................................................ 29 5 Basic aspects of DVB-T networks ......................................................................................................... 29 5.1 MFN or conventionally planned networks ....................................................................................................... 29 5.1.1 Principle of MFN ........................................................................................................................................ 29 5.1.2 Frequency resources needed for MFN ........................................................................................................ 29 5.1.3 Non-synchronous operation ........................................................................................................................ 30 5.1.4 Excess power .............................................................................................................................................. 30 5.2 Single Frequency Networks (SFN) .................................................................................................................. 30 5.2.1 Principle ...................................................................................................................................................... 30 5.2.2 Frequency efficiency................................................................................................................................... 30 5.2.3 Power efficiency ......................................................................................................................................... 31 5.2.4 Synchronous operation ............................................................................................................................... 31 5.3 MFN with local dense SFN around each MFN transmitter .............................................................................. 31 5.4 Gap-filler .......................................................................................................................................................... 31 5.4.1 Professional gap fillers ................................................................................................................................ 32 5.4.2 Domestic gap fillers .................................................................................................................................... 32 6 Setting up DVB-T transmitters ............................................................................................................... 33 6.1 RF issues, existing sites/sharing with analogue ................................................................................................ 33 6.1.1 Use of existing antenna ............................................................................................................................... 33 6.1.1.1 RF combining ........................................................................................................................................ 34 6.1.1.2 Multi-channel amplification .................................................................................................................. 34 6.1.2 New