1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 33.170 ISBN 0-626-17413-9 SANS 300744:2005Edition 1ETSI EN 300744:2004Edition V1.5.1SOUTH AFRICAN NATIONAL STANDARD Digital Video Broadcasting (DVB);
4、 Framing structure, channel coding and modulation for digital terrestrial television This national standard is the identical implementation of ETSI EN 300744:2004 and is adopted with the permission of the European Telecommunications Standards Institute. Published by Standards South Africa 1 dr lateg
5、an road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 300744:2005 Edition 1 ETSI EN 300744:2004 Edition V1.5.1 Table of changes Change No. Date Scope Abstract Describes a baseline transmission sys
6、tem for digital terrestrial TeleVision (TV) broadcasting. Specifies the channel coding/modulation system intended for digital multi-programme LDTV/SDTV/EDTV/HDTV terrestrial services. Keywords audio, broadcasting, data, digital, DVB, MPEG, terrestrial, TV, video. National foreword This South African
7、 standard was approved by National Committee StanSA TC 74, Communication technology, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. In South Africa, spectrum band plans are regulated by the Independent Communications Authority of South A
8、frica (ICASA). The South African Table of Frequency Allocations is obligatory for South Africa and will override any reference to frequency ranges as mentioned in this standard. ETS l EN 300 744 VI -5.1 (2004-1 1) European Standard (Telecommunications series) Digital Video Broadcasting (DVB); Framin
9、g structure, channel coding and modulation for digital terrestrial television European Broadcasting Europeenne ETSl EN 300 744 V1.5.1 (2004-1 1) Reference RENIJTC-DVB-156 Keywords audio, broadcasting, data, digital, DVB, MPEG, terrestrial, TV, video ETSl 650 Route des Lucioles F-06921 Sophia Antipol
10、is Cedex - FRANCE Tei.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association a but non lucratif enregistree a la Sous-Prefecture de Grasse (06) No 7803188 Important notice Individual copies of the present document can be downloaded from: http:llwww.etsi.org The
11、 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). In case of dispute, the reference shall be the printing on ETSl pri
12、nters of the PDF version kept on a specific network drive within ETSl Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:llportal.etsi.orq
13、ltblstatuslstatus.asp If you find errors in the present document, please send your comment to one of the following services: http:llportal.etsi.orglchaircor/ETSI support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing r
14、estriction extend to reproduction in all media. O European Telecommunications Standards Institute 2004. O European Broadcasting Union 2004. All rights reserved. DECT, PLUGTESTS and UMTS Trade Marks of ETSl registered for the benefit of its Members. TIPHON and the TIPHON logo are Trade Marks currentl
15、y being registered by ETSl for the benefit of its Members. 3GpPTM is a Trade Mark of ETSl registered for the benefit of its Members and of the 3GPP Organizational Partners. 3 ETSl EN 300 744 V1.5.1 (2004-1 1) Contents Intellectual Property Rights 5 . Foreword 5 1 Scope 6 2 References 6 3 Definitions
16、. symbols and abbreviations . 7 3.1 Definitions 7 3.2 Symbols 7 3.3 Abbreviations . 8 4 Baseline system 9 4.1 General considerations . 9 4.2 Interfacing 10 . 4.3 Channel coding and modulation 11 4.3.1 Transport multiplex adaptation and randomization for energy dispersal . 11 4.3.2 Outer coding and o
17、uter interleaving 11 4.3.3 Inner coding . 14 4.3.4 Inner interleaving 14 4.3.4.1 Bit-wise interleaving . 15 4.3.4.2 Symbol interleaver 19 4.3.5 Signal constellations and mapping 21 4.4 OFDM frame structure . 25 4.5 Reference signals 27 . 4.5.1 Functions and derivation 27 4.5.2 Definition of referenc
18、e sequence 27 4.5.3 Location of scattered pilot cells 28 . 4.5.4 Location of continual pilot carriers 29 . 4.5.5 Amplitudes of all reference information 29 4.6 Transmission Parameter Signalling (TPS) . 29 4.6.1 Scope of the TPS 30 . 4.6.2 TPS transmission format 31 4.6.2.1 Initialization 31 4.6.2.2
19、Synchronization 31 4.6.2.3 TPS length indicator 31 4.6.2.4 Frame number . 32 4.6.2.5 Constellation . 32 4.6.2.6 Hierarchy information . 32 4.6.2.7 Code rates 32 4.6.2.8 Guard Intervals 33 4.6.2.9 Transmission mode . 33 4.6.2.10 Cell identifier 34 4.6.2.1 1 Error protection of TPS . 34 4.6.3 TPS modu
20、lation 34 4.7 Number of RS-packets per OFDM super-frame . 35 4.8 Spectrum characteristics and spectrum mask . 35 . . 4.8.1 Spectrum characteristics . 35 4.8.2 Out-of-band spectrum mask (for 8 MHz channels) 36 4.8.3 Centre frequency of RF signal (for 8 MHz UHF channels) 39 Annex A (informative): Simu
21、lated system performance for 8 MHz channels 40 Annex B (informative): Definition of Pi and F1 . 42 Annex C (informative): Interleaving example . 44 Annex D (informative): Guidelines to implementation of the emitted signal 45 ETSl D . 1 Use of the FFT 45 D.2 Choice of “baseband“ centre frequency . 46
22、 D.3 Other potential difficulties 46 Annex E (normative): Values for 6 MHz and 7 MHz channels . 47 Annex F (normative): Additional features for DVB Handheld terminals VB-H) . 50 F . 1 General Considerations 50 . F.2 Additional features overview 50 Annex G (normative): 5 MHz channel bandwidth operati
23、on . 61 History 64 5 ETSl EN 300 744 V1.5.1 (2004-1 1) Intellectual Property 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
24、can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notlJied to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPRhome.asp). Purs
25、uant 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 ETSI SR 000 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present do
26、cument. Foreword This European Standard (Telecommunications series) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comite Europeen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOT
27、E: 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 Memorandum of Understanding also CENELEC, which is responsible for the sta
28、ndardization 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 programme-exchange domains. The EBU has active members in about 60 countri
29、es 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 Founded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations in
30、 the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which meet the real needs, and economic circumstances,
31、 of the consumer electronics and the broadcast industry. National transposition dates I Date of adoption of this EN: 1 Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dople): / Date of withdrawal of any conflicting National
32、 Standard (dow): 29 October 2004 3 1 January 2005 3 1 July 2005 3 1 July 2005 6 ETSI EN 300 744 V1.5.1 (2004-1 1) 1 Scope The present document describes a baseline transmission system for digital terrestrial Television (TV) broadcasting. It specifies the channel codinglmodulation system intended for
33、 digital multi-programme LDTVISDTVIEDTVIHDTV terrestrial services. The scope is as follows: - it gives a general description of the Baseline System for digital terrestrial TV; - it identifies the global performance requirements and features of the Baseline System, in order to meet the service qualit
34、y targets; - it 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 at the modulator side, while the processing at the receiver side is left open to d
35、ifferent implementation solutions. However, it is necessary in this text to refer to certain aspects of reception. In order to address Handheld terminals (DVB-H) in annexes are provided: - an additional 4K Mode offering supplementary options for network planning (annex F); - an optional in-depth inn
36、er interleaver, to mitigate the effects of the high level of man-made noise affecting the reception of DVB-H services (annex F); - an extension of the Transmission Parameter Signalling (TPS) information for signalling DVB-H Services (annex F); - the transmission parameters to operate the transmissio
37、n system in 5 MHz channel bandwidth, even outside of the traditional broadcasting bands (annex G). 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 publi
38、cation and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/d
39、ocbox.etsi.orglReference. I ISOIIEC 13818 (Parts 1 to 3): “Information technology - Generic coding of moving pictures and associated audio information“. 21 ETSI EN 300 421: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz satellite services“. PI ETSI
40、EN 300 429: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for cable systems“. 41 ETSI EN 300 468: “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. 3 Definitions, symbols and abbreviations Definitions For the purposes
41、 of the present document, the following definition applies: constraint length: number of delay elements +I in the convolutional coder Symbols For the purposes of the present document, the following symbols apply: output vector from inner bit interleaver e bit number w of inner bit interleaver output
42、 stream e constellation ratio which determines the QAM constellation for the modulation for hierarchical transmission input vector to inner bit interleaver e bit number w of inner bit interleaver input steam e output bit number do of demultiplexed bit stream number e of the inner interleaver demulti
43、plexer bit number i of the cell identifier complex cell for frame m in OFDM symbol 1 at carrier k Complex modulation for a reference signal at carrier k Complex modulation for a TPS signal at carrier k in symbol 1 Carrier-to-Noise ratio time duration of the guard interval convolutional code free dis
44、tance centre frequency of the emitted signal convolutional code Generator polynomials Reed-Solomon code generator polynomial BCH code generator polynomial inner symbol interleaver permutation inner bit interleaver permutation priority stream index Interleaving depth of the outer convolutional interl
45、eaver inner Interleavers branch index of the outer interleaver carrier number index in each OFDM symbol number of active carriers in the OFDM symbol carrier number of the lower and largest active carrier respectively in the OFDM signal OFDM symbol number index in an OFDM frame OFDM frame number inde
46、x OFDM super-frame number index convolutional interleaver branch depth for j = 1, M = NII transport stream sync byte number length of error protected packet in bytes inner symbol interleaver block size scattered pilot insertion index RS code field generator polynomial Power spectral density for carr
47、ier k interleaving Pattern of the inner symbol interleaver code rate for priority level i TPS bit index number of bytes which can be corrected by the Reed-Solomon decoder elementary Time period duration of an OFDM symbol Time duration of a frame Time duration of the useful (orthogonal) part of a sym
48、bol, without the guard interval bit numbering index number of bits per modulation symbol value of reference PRBS sequence applicable to carrier k input bit number di to the inner interleaver demultiplexer high priority input bit number di to the inner interleaver demultiplexer low priority input bit
49、 number di to the inner interleaver demultiplexer output vector from inner symbol interleaver intermediate vector of inner symbol interleaver bit number q of output from inner symbol interleaver bit number q of intermediate vector of inner symbol interleaver complex modulation symbol complex conjugate Abbreviations For the purposes of the present document, the following abbreviations apply: ACI BCH BER CCI DBPSK DFT DVB DVB-H DVB-T EDTV FFT FIFO HDTV HP IFFT LDTV LP MPEG MSB MUX NICAM OFDM PAL PRBS QAM QEF QPSK RF RS SDTV SEC AM SFN TPS TV UHF VHF Adjacent Channel Interfe
