1、 ETSI EN 302 307-1 V1.4.1 (2014-11) Digital Video Broadcasting (DVB); Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications; Part 1: DVB-S2 EUROPEAN STANDARD ETSI ETSI EN 302 307-1
2、V1.4.1 (2014-11) 2Reference REN/JTC-DVB-341-1 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
3、-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified wi
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9、 302 307-1 V1.4.1 (2014-11) 3Contents Intellectual Property Rights 6g3Foreword . 6g3Modal verbs terminology 7g3Introduction 7g31 Scope 9g32 References 9g32.1 Normative references . 9g32.2 Informative references 10g33 Symbols and abbreviations . 10g33.1 Symbols 10g33.2 Abbreviations . 11g34 Transmiss
10、ion system description 13g34.1 System definition 13g34.2 System architecture 14g34.3 System configurations 15g35 Subsystems specification 16g35.1 Mode adaptation . 16g35.1.1 Input interface. 17g35.1.2 Input stream synchronizer (optional, not relevant for single TS - BS) . 17g35.1.3 Null-Packet Delet
11、ion (ACM and Transport Stream only) 17g35.1.4 CRC-8 encoder (for packetized streams only) 18g35.1.5 Merger/Slicer 18g35.1.6 Base-Band Header insertion . 19g35.2 Stream adaptation . 21g35.2.1 Padding . 21g35.2.2 BB scrambling 21g35.3 FEC encoding . 22g35.3.1 Outer encoding (BCH) 23g35.3.2 Inner encod
12、ing (LDPC) 24g35.3.2.1 Inner coding for normal FECFRAME. 24g35.3.2.2 Inner coding for short FECFRAME 25g35.3.3 Bit Interleaver (for 8PSK, 16APSK and 32APSK only) . 26g35.4 Bit mapping into constellation 27g35.4.1 Bit mapping into QPSK constellation . 27g35.4.2 Bit mapping into 8PSK constellation 28g
13、35.4.3 Bit mapping into 16APSK constellation . 28g35.4.4 Bit mapping into 32APSK 29g35.5 Physical Layer (PL) framing 30g35.5.1 Dummy PLFRAME insertion . 31g35.5.2 PL signalling . 31g35.5.2.1 SOF field . 32g35.5.2.2 MODCOD field . 32g35.5.2.3 TYPE field 32g35.5.2.4 PLS code . 32g35.5.3 Pilots inserti
14、on 33g35.5.4 Physical layer scrambling . 33g35.6 Baseband shaping and quadrature modulation . 35g36 Error performance 36g3Annex A (normative): Signal spectrum at the modulator output 37g3Annex B (normative): Addresses of parity bit accumulators for nldpc = 64 800 . 39g3ETSI ETSI EN 302 307-1 V1.4.1
15、(2014-11) 4Annex C (normative): Addresses of parity bit accumulators for nldpc = 16 200 . 51g3Annex D (normative): Additional Mode Adaptation and ACM tools . 58g3D.1 “ACM Command“ signalling interface 58g3D.2 Input stream synchronizer 58g3D.3 Null-packet Deletion (normative for input transport strea
16、ms and ACM). 60g3D.4 BBHEADER and Merging/slicing Policy for various application areas 61g3D.5 Signalling of reception quality via return channel (Normative for ACM) . 62g3Annex E (normative): SI and signal identification for DSNG and contribution applications 64g3Annex F (normative): Backwards Comp
17、atible modes (optional) 65g3Annex G (informative): Supplementary information on receiver implementation 66g3G.1 Carrier recovery 66g3G.2 FEC decoding . 66g3G.3 ACM: Transport Stream regeneration and clock recovery using ISCR . 66g3G.4 Non linearity pre-compensation and Intersymbol Interference suppr
18、ession techniques 66g3G.5 Interactive services using DVB-RCS return link: user terminal synchronization 67g3Annex H (informative): Examples of possible use of the System 68g3H.1 CCM digital TV broadcasting: bit rate capacity and C/N requirements 68g3H.2 Distribution of multiple TS multiplexes to DTT
19、 Transmitters (Multiple TS, CCM) . 68g3H.3 SDTV and HDTV broadcasting with differentiated protection (VCM, Multiple TS) . 68g3H.4 DSNG Services using ACM (Single transport Stream, information rate varying in time) 68g3H.5 IP Unicast Services (Non-uniform protection on a user-by-user basis) . 68g3H.6
20、 Example performance of BC modes. 68g3H.7 Satellite transponder models for simulations . 68g3H.8 Phase noise masks for simulations . 71g3Annex I (normative): Mode Adaptation input interfaces (optional) 72g3I.1 Mode Adaptation input interface with separate signalling circuit (optional) . 72g3I.2 Mode
21、 Adaptation input interface with in-band signalling (optional) . 73g3Annex J (informative): Bibliography . 74g3Annex K: For future use 75g3Annex L: For future use 76g3Annex M (normative): Transmission format for wideband satellite transponders using time-slicing (optional) . 77g3M.1 Definition of Ti
22、me-slicing receiver 77g3M.2 TIME SLICE MODE CODING . 78g3M.2.1 PL signalling 78g3M.2.2 SOF field 79g3M.2.3 MODCOD field 79g3M.2.4 TYPE field 79g3M.2.5 TSN code 79g3ETSI ETSI EN 302 307-1 V1.4.1 (2014-11) 5M.3 Phase noise masks 79g3History 80g3ETSI ETSI EN 302 307-1 V1.4.1 (2014-11) 6Intellectual Pro
23、perty Rights IPRs essential or potentially essential to the present document may 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);
24、Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, 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 carrie
25、d out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced 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 Commi
26、ttee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific f
27、ield of broadcasting and related fields. Since 1995 the JTC Broadcast became 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 organizat
28、ions whose work includes the co-ordination of its members activities in 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
29、SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 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 stan
30、dards for the delivery of digital television and data services. DVB fosters 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, conditiona
31、l access and interactivity for digital video, audio and data. The consortium came together in 1993 to provide global standardization, interoperability and future proof specifications. The present document is part 1 of a multi-part deliverable covering a “second generation“ modulation and channel cod
32、ing system, denoted “DVB-S2“, as identified below: Part 1: “DVB-S2“; Part 2: “DVB-S2-Extensions (DVB-S2X)“. National transposition dates Date of adoption of this EN: 4 November 2014 Date of latest announcement of this EN (doa): 28 February 2015 Date of latest publication of new National Standard or
33、endorsement of this EN (dop/e): 31 August 2015 Date of withdrawal of any conflicting National Standard (dow): 31 August 2015 ETSI ETSI EN 302 307-1 V1.4.1 (2014-11) 7Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “w
34、ill“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction DVB-S (EN 300 421 2) was intr
35、oduced as a standard in 1994 and DVB-DSNG (EN 301 210 3) in 1997. The DVB-S standard specifies QPSK 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 a
36、ddition to DVB-S format, the use of 8PSK and 16QAM modulation for satellite news gathering and contribution services. Since 1997, digital satellite transmission technology has evolved somewhat: New channel coding schemes, combined with higher order modulation, promise more powerful alternatives to t
37、he DVB-S/DVB-DSNG coding and modulation schemes. The result is a capacity gain in the order of 30 % 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 protecti
38、on to different service components (e.g. SDTV and HDTV, audio, multimedia). In the case of interactive 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 p
39、rotection and dynamic link adaptation to propagation conditions, targeting each individual receiving 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-D
40、SNG. Such gains are achieved by informing the satellite up-link station of the channel condition (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
41、a reference to it). Extended flexibility to cope with other input data formats (such as multiple 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 “
42、System“ or “DVB-S2“ for the purposes of the present document) to make use of the improvements listed 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
43、 with single and multiple input streams of various formats (packetized or continuous); a powerful 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 m
44、ode (AWGN channel, modulation constrained Shannon limit); a wide range of code rates (from 1/4 up 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,
45、 0,25 and 0,20; Adaptive Coding and Modulation (ACM) functionality, optimizing channel coding and 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 Te
46、levision (HDTV) Broadcasting services to be used for primary and secondary distribution in the Fixed Satellite Service (FSS) and the Broadcast Satellite Service (BSS) bands. ETSI ETSI EN 302 307-1 V1.4.1 (2014-11) 8DVB-S2 is intended to provide Direct-To-Home (DTH) services for consumer Integrated R
47、eceiver Decoder (IRD), as well as collective antenna systems (Satellite Master Antenna Television - 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
48、 new services and allow for a long-term migration. BS services are transported in MPEG Transport Stream format. VCM may be applied on multiple transport stream to achieve a differentiated error protection for different services (TV, HDTV, audio, multimedia). Interactive Services (IS) Interactive dat
49、a 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). Data services are transported in (single or multiple) Transport Stream format according to EN 301 192 4 (e.g. using Multipr
