1、EN 301 21 O 1.1.1 (1999-03) European Standard (Teemmmunications series) Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for Digital Satellite News Gathering (DSNG) and other contribution applications by satellite Reference DEN/JTC-DVB-73 (b7cOOico.PDF) Keywords bro
2、adcasting, digital, DVB, SNG, TV, video ETSI Postai address F-O6921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Tel.: +33 4 92 94 42 O0 Fax: 43 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre
3、la Sous-Prfecture de Grasse (Oe) No 780W88 Internet secretariata etsi.fr Individual copies of this ETSI deliverable can be downloaded from http:/www.etsi.org If you find errors in the present document, send your comment to: editorQetsi.fr CODVrhht Notification No part may be reproduced except as aut
4、horized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1999. O European Broadcasting Union 1999. Ali rights reserved. ETSI STD.ETS1 EN 301 210-ENGL 1979 6 3400855 0378940 TTb m 3 EN 301 210Vl.l
5、.l (1999-03) Contents Intellectual Property Rights 4 Foreword 4 1 Scope 5 2 References 6 3 Symbols and abbreviations 7 3.1 Symbols . 7 3.2 Abbreviations . 7 4 Transmission system 8 4.1 4.2 4.3 4.4 4.4.1 4.4.2 4.4.3 4.5 4.5.1 4.5.2 4.6 4.6.1 4.6.2 4.6.3 4.7 4.7.1 4.7.1.1 4.7.1.2 4.7.1.3 4.7.2 System
6、definition . 8 Adaptation to satellite transponder characteristics . 9 Channel coding for QPSK modes 9 Outer coding (RS). interleaving and framing . 10 Bit mapping. baseband shaping and modulation for QPSK modes 11 Bit mapping to QPSK constellation . 11 Channel coding for the optional 8PSK and 16QAM
7、 modes 12 Transport multiplex adaptation and randomization for energy dispersai (8PSK and 16QAM modes) 12 Outer coding (RS), interleaving and framing (8PSK and 16QAM modes) 12 Inner coding (“pragmatic“ trellis coding type) (8PSK and 16QAM modes) 12 Bit mapping. baseband shaping and modulation for th
8、e optional 8PSK and 16QAM modes 15 Bit mapping to constellations (8PSK and 16QAM modes) 15 Inner coding and constellation for 8PSK 2/3 (2CBPS) 16 Inner coding and constellation for 8PSK 5/6 and 8/9 (1CBPS) 17 Inner coding and constellation for 16QAM 3/4 and 7/8 (2CBPS) 18 Baseband shaping and modula
9、tion (8PSK and 16QAM modes) 20 Interfacing 9 Transport multiplex adaptation and randomization for energy dispers al 10 Inner coding (convolutional) 10 Baseband shaping and quadrature modulation . 12 5 Annex A (normative): Annex B (normative): Error performance requirements 21 Signal spectrum at the
10、modulator output . 22 Transmission setups for interoperability tests and emergency situations . 24 Annex C (normative): Annex D (normative): Annex E (informative): Implementation of the “optional“ modes 25 SI implementation for DSNG and other contribution applications . 26 Examples of possible use o
11、f the System . 28 Bibliography . 31 History 32 ETSi STD.ETSI EN 301 210-ENGL 1999 W 3400655 037894l 932 a 4 EN 301 210 V1.l.l (1999-03) I n tel lect ual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these
12、 essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in SR 000 3 14: “Intellectual Property Rghts (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standards“, which is available free of charge from the ETSI Secretariat.
13、 Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). 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 referenced in SR o00 314 (or the updates on the ETSI
14、 Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by the Joint Technical Committee Broadcast of the European Broadcasting Union BU), Comit Europen de Normalisation ELECtrotechnique (CENEL
15、EC) and the European Telecommunications Standards Institute (ETSI). The work was based on the studies carried out by the European DVB Project under the auspices of the Ad Hoc Group on DSNG of the DVB Technical Module. This joint group of industry, operators and broadcasters provided the necessary in
16、formation on all relevant technical matters (see bibliography). NOTE: The EBUETSI 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 became a tripartite body by including in the Memoran
17、dum 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 the technical, legal, programme-making and program
18、me-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 81 Digital Video Broadcasting VB) Project Founded i
19、n September 1993, the DVB Project is a marked-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of WEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries
20、 around the world, DVB fosters marked-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. National transposition dates Date of adoption of this EN: 5 February 1999 I I Date of latest announcement of this EN (doa): 31 May 1999 Da
21、te of latest publication of new National Standard or endorsement of this EN (dople): 30 November 1999 I Date of withdrawal of any conflicting National Standard (dow): 30 November 1999 I ETSI STD=ETSI EN 301 210-ENGL 5 EN 301 21 O V1.l.l (1 999-03) 1 Scope The present document describes the modulatio
22、n and channel coding system (denoted the “System“ for the purposes of the present document) for Digital Satellite News Gathering (DSNG) and other contribution applications by satellite. According to ITU-R Recommendation SNG.770-1 12, SNG is defined as “Temporary and occasional transmission with shor
23、t notice of television or sound for broadcasting purposes, using highly portable or transportable uplink earth Stations.“. The equipment should be capable of uplinking the video programme (or programmes) with its associated sound or sound programme signals. Optionally it should be capable of providi
24、ng two-way Co-ordination (communication) circuits and data transmission according to EN 301 222 6. The equipment should be capable of being set up and operated by a crew of no more than two people within a reasonably short time. Limited receiving capability should be available in the uplink terminal
25、 to assist in pointing the antenna and to monitor the transmitted signal, where possible. Digital television contribution applications by satellite consist of point-to-point or point-to-multipoint transmissions, connecting fixed or transportable uplink and receiving stations, not intended to be rece
26、ived by the general public. Although these applications often transmit a single TV service, the Transport Stream multiplex flexibility also allows multi-programme TV services with associated sound, including commentary sound channels and data services; in this case multiple service components are Ti
27、me Division Multiplexed (TDM) on a single digital carrier. Maximum commonality with EN 300 421 3 is maintained, such as Transport Stream multiplexing i, scrambling for energy dispersal, concatenated error protection strategy based on Reed-Solomon coding, convolutional interleaving and inner convolut
28、ional coding. The baseline System compatibly includes (as a subset) all the transmission formats specified by EN 300 421 3, based on Quaternary Phase Shift Keying (QPSK) modulation and is suitable for DSNG services as well as for other contribution applications by satellite. Nevertheless, other opti
29、onal (annex C explains the meaning of “optional“ within the present document) transmission modes are added, using Eight Phase Shift Keying (8PSK) modulation and Sixteen Quadrature Amplitude Modulation (16QAM), in order to fulfil specific application requirements. These optional modes can be very eff
30、icient in certain contribution applications by satellite. The following wamings should be taken into account while using the high spectrum efficiency modes, 8PSK and 16QAM: they require higher transmitted EIRPs and/or receiving antenna diameters, because of their intrinsic sensitivity to noise and i
31、nterferences; they are more sensitive to linear and non-linear distortions; in particular 16QAM cannot be used on transponders driven near saturation; they are more sensitive to phase noise, especially at low symbol rates; therefore high quality frequency converters should be used (see annex E); the
32、 System modulatiodcoding schemes are not rotationally-invariant, so that “cycle-slips“ and “phase snaps“ in the chain can produce service interruptions; therefore frequency conversions and demodulation carrier recovery systems should be designed to avoid cycle-slips and phase snaps. The System is su
33、itable for use on different satellite transponder bandwidths, either in single carrier per transponder or in multiple carriers per transponder (Frequency Division Multiplex, FDM) configuration. Annex E gives examples of possible use of the System. The present document: - - gives a general descriptio
34、n of the System; specifies the digitally modulated signal in order to allow compatibility between pieces of equipment developed by different manufacturers. This is achieved by describing in detail the signal processing principles at the modulator side, while the processing at the receive side is lef
35、t open to different implementation solutions. However, it is necessary in the present document to refer to certain aspects of reception; identifies the global performance requirements and features of the System, in order to meet the service quality targets. - ETSI STD-ETSI EN 301 210-ENGL 1999 6 EN
36、301 210 V1.l.l (1999-03) 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a speci
37、fic reference, subsequent revisions do not apply. For a non-specific reference, subsequent revisions do apply. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. ISO/iEC 13818-1: “Information technology; Generic coding of moving
38、 pictures and associated audio information: Systems“. ISO/IEC 13818-2: “Information technology; Generic coding of moving pictures and associated audio information: Video“. EN 300 421: “Digital Video Broadcasting W); Framing structure, channel coding and modulation for 11/12 GHz satellite services“.
39、EN 50083-9: “Cabled distribution systems for television, sound and interactive multimedia signals; Part 9: Interfaces for CATV/SMATV headends and similar professional equipment for DVBMPEG-2 transport streams“. ETR 154: “Digital Video Broadcasting (DVB); Implementation guidelines for the use of WEG-
40、2 Systems, Video and Audio in satellite, cable and terrestrial broadcasting applications“. EN 301 222: “Digital Video Broadcasting (DVB); Co-ordination channels associated with Digital Satellite News Gathering (DSNG)“. Void. EN 300 468: “Digital Video Broadcasting (DVB); Specification for Service In
41、formation (SI) in DVB systems“. ETS 300 327: “Satellite Earth Stations and Systems (SES); Satellite News Gathering (SNG) Transportable Earth Stations (TES) (13-14/11-12 GHz)“. ETS 300 673 (1997): “Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for 4/6 GHz and 11/12/1
42、4 GHz Very Small Aperture Terminal (VSAT) equipment and 11/12/13/14 GHz Satellite News Gathering (SNG) Transportable Earth Station (TES) equipment“. TBR 30: “Satellite Earth Stations and Systems (SES); Satellite News Gathering (SNG) Transportable Earth Stations (TES) operating in the 1 I-12/13-14 GH
43、z frequency bands“. -R Recommendation SNG.770-1: “Unifom operational procedures for Satellite News Gathering (SNG)“. ETSI STD-ETSI EN 301 210-ENGL 3997 3400855 0378944 641 W 7 EN 301 210 V1.l.l (1999-03) 3 Symbols and abbreviations 3.1 Symbols For the purposes of the present document, the following
44、symbols apply: Roll-off factor Carrier-to-noise ratio Convolutional code free distance Ratio between the energy per useful bit and twice the noise power spectrai density Nyquist frequency Convolutional code generators Interleaving depth bytes In-phase, Quadrature phase components of the modulated si
45、gnai Branch index of the interleaver Convolutional code constraint length number of transmitted bits per constellation symbol Convolutional interleaver branch depth for j = 1, M = N/i Error protected frame length (bytes) Symbol rate corresponding to the bilateral Nyquist bandwidth of the modulated s
46、ignal Useful bit rate outer coding (Le. Reed-Solomon) (according to EN 300 421 3); convolutional interleaving (according to EN 300 421 3); inner coding: - punctured convolutional coding (according to EN 300 421 3); - “pragmatic“ trellis coding associated with 8PSK and 16QAM (optional); bit mapping i
47、nto constellations: - QPSK (according to EN 300 421 3); - 8PSK (optional); - 16QAM (optional); squared-root raised-cosine baseband shaping: - - quadrature modulation (according to EN 300 421 3). roll-off factor a = 0,35 according to EN 300 421 3 for QPSK, 8PSK and 16QAM; additional optional roll-off
48、 factor a = 0,25 (for the optional modulations 8PSK and 16QAM); ETSI - STD-ETSI EN 301 I-10-ENGL 1999 m 340085C 037894b 414 I EN 301 210 V1.1.1 (1999-03) 9 - Coders Programme Transport QPSK to the RF Convolutional BPSK (optionai) Satellite 16QAM (optional) iN,i+) byte 8 uimsbf Semantics for the Tran
49、sport Stream Descriptor: The descriptor-length field shall be set to the value 0x04. byte: This in an 8-bit field. The four bytes shall contain the values Ox43,0x4F, Ox4E, 0x41 (ASCII: “CONA“). In DSNG transmissions, the TSDT descriptor loop shall also contain a second descriptor, the DSNG descriptor, with the following syntax: syntax no. of bitsidentifier DSNG-descriptor () descriptor-tag 8 uimsbf descrip tor-length 8 uimsbf for (i=O;iN;i+) station-identification-char 8 uimsbf I 1 Descriptor-tag: 0x68 Semantics for the DSNG de
