ETSI
TSI TR 102 376 V1.1.1 (2005
2)
Contents
Intellectual Property Rights................................................................................................................................5
Foreword.............................................................................................................................................................5
1 Scope........................................................................................................................................................6
2 References................................................................................................................................................6
3 Symbols and abbreviations.......................................................................................................................8
3.1 Symbols..............................................................................................................................................................8
3.2 Abbreviations .....................................................................................................................................................9
4 General description of the technical characteristics of the DVB-S2 system..........................................11
4.1 Commercial requirements ................................................................................................................................11
4.1.1 Commercial Requirements for Broadcast Services.....................................................................................12
4.1.2 Commercial Requirements for Non-Broadcast Services ............................................................................13
4.1.3 Common Commercial Requirements..........................................................................................................14
4.2 Application scenarios .......................................................................................................................................14
4.3 System architecture ..........................................................................................................................................15
4.3.1 The system block diagram..........................................................................................................................18
4.3.2 Reference performance...............................................................................................................................19
4.3.2.1 Single carrier per transponder configuration.........................................................................................19
4.3.2.1.1 Sensitivity to satellite power amplifier characteristics ....................................................................23
4.3.2.1.2 Sensitivity to roll-off .......................................................................................................................25
4.3.2.2 Multiple carrier per transponder configuration .....................................................................................25
4.4 The backwards compatible modes....................................................................................................................26
4.4.1 Hierarchical modulations............................................................................................................................27
4.5 Adaptive Coding and Modulation ....................................................................................................................29
4.5.1 ACM: the principles....................................................................................................................................29
4.5.2 Functional description of the DVB-S2 subsystem for ACM ......................................................................32
4.5.2.1 Specific subsystems for supporting ACM with MPEG-TS...................................................................34
4.5.3 DVB-S2 performance in ACM mode .........................................................................................................37
4.6 System configurations......................................................................................................................................38
5 Broadcast applications............................................................................................................................38
5.1 SDTV broadcasting..........................................................................................................................................39
5.2 SDTV and HDTV broadcasting with differentiated channel protection...........................................................39
5.3 Backwards Compatible services.......................................................................................................................39
5.3.1 Hierarchical modulations............................................................................................................................40
6 Interactive applications...........................................................................................................................40
6.1 IP Unicast Services...........................................................................................................................................41
6.1.1 Single Generic Stream and ACM command...............................................................................................41
6.1.2 Multiple (Generic or Transport) Streams....................................................................................................43
6.1.3 Encapsulation efficiency of ACM modes...................................................................................................45
6.1.4 Scheduling issues........................................................................................................................................48
6.2 Independent frames structure for Packetized streams with VCM/ACM ..........................................................50
6.2.1 Independent framing issues (applicable to MPEG-TS)...............................................................................50
6.2.2 Example slicing process..............................................................................................................................51
6.2.3 Specific cases..............................................................................................................................................51
7 Contribution services, data content distribution/trunking and other professional applications..............52
7.1 Distribution of multiple MPEG multiplexes to Digital Terrestrial TV Transmitters........................................52
7.2 DSNG and other professional applications ......................................................................................................52
7.2.1 DSNG bit rates and symbol rates................................................................................................................53
7.2.2 Phase noise recommendation......................................................................................................................53
7.2.3 Receiver filter mask....................................................................................................................................53
7.2.4 DSNG carrier spacing.................................................................................................................................54
7.2.5 Link budget examples for DSNG ...............................................................................................................55
7.2.5.1 Generic Hypothesis...............................................................................................................................55
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wyr_062011-10-24DVB-S2官方标准中一篇重要标准。在DVB-S2标准的基础上，给出了接受端系统的建议等，很值得看……
