1、 ETSI EN 302 307 V1.3.1 (2013-03) Digital Video Broadcasting (DVB); Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2) European Standard ETSI ETSI EN 302 307 V1.3.1 (201
2、3-03) 2Reference REN/JTC-DVB-319 Keywords BSS, digital, DVB, modulation, satellite, TV 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 but non lucratif enregistre la Sous-Prfecture de
3、 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,
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8、TSI ETSI EN 302 307 V1.3.1 (2013-03) 3Contents Intellectual Property Rights 5g3Foreword . 5g31 Scope 6g32 References 8g32.1 Normative references . 8g32.2 Informative references 9g33 Symbols and abbreviations . 9g33.1 Symbols 9g33.2 Abbreviations . 10g34 Transmission system description 12g34.1 System
9、 definition 12g34.2 System architecture 13g34.3 System configurations 14g35 Subsystems specification 15g35.1 Mode adaptation . 15g35.1.1 Input interface. 16g35.1.2 Input stream synchronizer (optional, not relevant for single TS - BS) . 16g35.1.3 Null-Packet Deletion (ACM and Transport Stream only) 1
10、6g35.1.4 CRC-8 encoder (for packetized streams only) 17g35.1.5 Merger/Slicer 17g35.1.6 Base-Band Header insertion . 18g35.2 Stream adaptation . 20g35.2.1 Padding . 20g35.2.2 BB scrambling 20g35.3 FEC encoding . 21g35.3.1 Outer encoding (BCH) 22g35.3.2 Inner encoding (LDPC) 23g35.3.2.1 Inner coding f
11、or normal FECFRAME. 23g35.3.2.2 Inner coding for short FECFRAME 24g35.3.3 Bit Interleaver (for 8PSK, 16APSK and 32APSK only) . 25g35.4 Bit mapping into constellation 26g35.4.1 Bit mapping into QPSK constellation . 26g35.4.2 Bit mapping into 8PSK constellation 27g35.4.3 Bit mapping into 16APSK conste
12、llation . 27g35.4.4 Bit mapping into 32APSK 28g35.5 Physical Layer (PL) framing 29g35.5.1 Dummy PLFRAME insertion . 30g35.5.2 PL signalling . 30g35.5.2.1 SOF field . 31g35.5.2.2 MODCOD field . 31g35.5.2.3 TYPE field 31g35.5.2.4 PLS code . 31g35.5.3 Pilots insertion 32g35.5.4 Physical layer scramblin
13、g . 32g35.6 Baseband shaping and quadrature modulation . 34g36 Error performance 35g3Annex A (normative): Signal spectrum at the modulator output 36g3Annex B (normative): Addresses of parity bit accumulators for nldpc= 64 800 . 38g3Annex C (normative): Addresses of parity bit accumulators for nldpc=
14、 16 200 . 48g3Annex D (normative): Additional Mode Adaptation and ACM tools . 51g3ETSI ETSI EN 302 307 V1.3.1 (2013-03) 4D.1 “ACM Command“ signalling interface 51g3D.2 Input stream synchronizer 51g3D.3 Null-packet Deletion (normative for input transport streams and ACM). 53g3D.4 BBHEADER and Merging
15、/slicing Policy for various application areas 54g3D.5 Signalling of reception quality via return channel (Normative for ACM) . 55g3Annex E (normative): SI and signal identification for DSNG and contribution applications 57g3Annex F (normative): Backwards Compatible modes (optional) 58g3Annex G (info
16、rmative): Supplementary information on receiver implementation 61g3G.1 Carrier recovery 61g3G.2 FEC decoding . 61g3G.3 ACM: Transport Stream regeneration and clock recovery using ISCR . 64g3G.4 Non linearity pre-compensation and Intersymbol Interference suppression techniques 64g3G.5 Interactive ser
17、vices using DVB-RCS return link: user terminal synchronization 65g3Annex H (informative): Examples of possible use of the System 66g3H.1 CCM digital TV broadcasting: bit rate capacity and C/N requirements 66g3H.2 Distribution of multiple TS multiplexes to DTT Transmitters (Multiple TS, CCM) . 68g3H.
18、3 SDTV and HDTV broadcasting with differentiated protection (VCM, Multiple TS) . 69g3H.4 DSNG Services using ACM (Single transport Stream, information rate varying in time) 69g3H.5 IP Unicast Services (Non-uniform protection on a user-by-user basis) . 70g3H.6 Example performance of BC modes. 72g3H.7
19、 Satellite transponder models for simulations . 73g3H.8 Phase noise masks for simulations . 75g3Annex I (normative): Mode Adaptation input interfaces (optional) 76g3I.1 Mode Adaptation input interface with separate signalling circuit (optional) . 76g3I.2 Mode Adaptation input interface with in-band
20、signalling (optional) . 77g3Annex J (informative): Bibliography . 78g3Annex K: For future use . 79g3Annex L: For future use . 80g3Annex M (normative): Transmission format for wideband satellite transponders using time-slicing (optional) . 81g3M.1 Definition of Time-slicing receiver 81g3M.2 TIME SLIC
21、E MODE CODING . 82g3M.2.1 PL signalling 82g3M.2.2 SOF field 83g3M.2.3 MODCOD field 83g3M.2.4 TYPE field 83g3M.2.5 TSN code 83g3M.3 Phase noise masks 83g3History 84g3ETSI ETSI EN 302 307 V1.3.1 (2013-03) 5Intellectual Property Rights IPRs essential or potentially essential to the present document may
22、 have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI st
23、andards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not r
24、eferenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (EN) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de
25、Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). The work of the JTC was based on the studies carried out by the European DVB Project under the auspices of the Ad Hoc Group on DVB-S2 of the DVB Technical Module. This joint group of industry, op
26、erators and broadcasters provided the necessary information on all relevant technical matters (see bibliography). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast b
27、ecame a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in
28、 the technical, legal, programme-making and programme-exchange domains. The EBU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24
29、81 The Digital Video Broadcasting Project (DVB) is an industry-led consortium of broadcasters, manufacturers, network operators, software developers, regulatory bodies, content owners and others committed to designing global standards for the delivery of digital television and data services. DVB fos
30、ters market driven solutions that meet the needs and economic circumstances of broadcast industry stakeholders and consumers. DVB standards cover all aspects of digital television from transmission through interfacing, conditional access and interactivity for digital video, audio and data. The conso
31、rtium came together in 1993 to provide global standardisation, interoperability and future proof specifications. National transposition dates Date of adoption of this EN: 1 March 2013 Date of latest announcement of this EN (doa): 30 June 2013 Date of latest publication of new National Standard or en
32、dorsement of this EN (dop/e): 31 December 2013 Date of withdrawal of any conflicting National Standard (dow): 31 December 2013 ETSI ETSI EN 302 307 V1.3.1 (2013-03) 61 Scope DVB-S (EN 300 421 2) was introduced as a standard in 1994 and DVB-DSNG (EN 301 210 3) in 1997. The DVB-S standard specifies QP
33、SK modulation and concatenated convolutional and Reed-Solomon channel coding, and is now used by most satellite operators worldwide for television and data broadcasting services. DVB-DSNG specifies, in addition to DVB-S format, the use of 8PSK and 16QAM modulation for satellite news gathering and co
34、ntribution services. Since 1997, digital satellite transmission technology has evolved somewhat: New channel coding schemes, combined with higher order modulation, promise more powerful alternatives to the DVB-S/DVB-DSNG coding and modulation schemes. The result is a capacity gain in the order of 30
35、 % at a given transponder bandwidth and transmitted EIRP, depending on the modulation type and code rate. Variable Coding and Modulation (VCM) may be applied to provide different levels of error protection to different service components (e.g. SDTV and HDTV, audio, multimedia). In the case of intera
36、ctive and point-to-point applications, the VCM functionality may be combined with the use of return channels, to achieve Adaptive Coding and Modulation (ACM). This technique provides more exact channel protection and dynamic link adaptation to propagation conditions, targeting each individual receiv
37、ing terminal. ACM systems promise satellite capacity gains of up to 100 % to 200 %. In addition, service availability may be extended compared to a constant protection system (CCM) such as DVB-S or DVB-DSNG. Such gains are achieved by informing the satellite up-link station of the channel condition
38、(e.g. C/N+I) of each receiving terminal via the satellite or terrestrial return channels. DVB-S and DVB-DSNG are strictly focused on a unique data format, the MPEG Transport Stream (ISO/IEC 13818-1 1 or a reference to it). Extended flexibility to cope with other input data formats (such as multiple
39、Transport Streams, or generic data formats) is now possible without significant complexity increase. The present document defines a “second generation“ modulation and channel coding system (denoted the “System“ or “DVB-S2“ for the purposes of the present document) to make use of the improvements lis
40、ted above. DVB-S2 is a single, very flexible standard, covering a variety of applications by satellite, as described below. It is characterized by: a flexible input stream adapter, suitable for operation with single and multiple input streams of various formats (packetized or continuous); a powerful
41、 FEC system based on LDPC (Low-Density Parity Check) codes concatenated with BCH codes, allowing Quasi-Error-Free operation at about 0,7 dB to 1 dB from the Shannon limit, depending on the transmission mode (AWGN channel, modulation constrained Shannon limit); a wide range of code rates (from 1/4 up
42、 to 9/10); 4 constellations, ranging in spectrum efficiency from 2 bit/s/Hz to 5 bit/s/Hz, optimized for operation over non-linear transponders; a set of three spectrum shapes with roll-off factors 0,35, 0,25 and 0,20; Adaptive Coding and Modulation (ACM) functionality, optimizing channel coding and
43、 modulation on a frame-by-frame basis. The System has been optimized for the following broadband satellite applications: Broadcast Services (BS) Digital multi-programme Television (TV)/High Definition Television (HDTV) Broadcasting services to be used for primary and secondary distribution in the Fi
44、xed Satellite Service (FSS) and the Broadcast Satellite Service (BSS) bands. ETSI ETSI EN 302 307 V1.3.1 (2013-03) 7DVB-S2 is intended to provide Direct-To-Home (DTH) services for consumer Integrated Receiver Decoder (IRD), as well as collective antenna systems (Satellite Master Antenna Television -
45、 SMATV) and cable television head-end stations (possibly with remodulation, see EN 300 429 5). DVB-S2 may be considered a successor to the current DVB-S standard EN 300 421 2, and may be introduced for new services and allow for a long-term migration. BS services are transported in MPEG Transport St
46、ream format. VCM may be applied on multiple transport stream to achieve a differentiated error protection for different services (TV, HDTV, audio, multimedia). Two modes are available: NBC-BS (Non Backwards Compatible Broadcast Services) is not backwards-compatible with EN 300 421 2. BC-BS (Backward
47、s-Compatible Broadcast Services) is backwards-compatible to EN 300 421 2 (see annex F). In fact, with a large number of DVB-S receivers already installed, backwards compatibility may be required for a period of time, where old receivers continue to receive the same capacity as before, while the new
48、DVB-S2 receivers could receive additional capacity broadcasts. When the complete receiver population has migrated to DVB-S2, the transmitted signal can be modified to a non-backward compatible mode, thus exploiting the full potential of DVB-S2. To facilitate the reception of DVB-S services by DVB-S2
49、 receivers, implementation of DVB-S in DVB-S2 chips is highly recommended. Interactive Services (IS) Interactive data services including Internet access DVB-S2 is intended to provide interactive services to consumer IRDs and to personal computers, where DVB-S2s forward path supersedes the current DVB-S standard EN 300 421 2 for interactive systems. The return path can be implemented using various DVB interactive systems, such as DVB-RCS (EN 301 790 6), DVB-RCP (ETS 300 801 7), DVB-RCG (EN 301 195 8), DVB-RCC (ES 200 800 9). D
