1、 ETSI EN 300 744 V1.6.2 (2015-10) Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television EUROPEAN STANDARD ETSI ETSI EN 300 744 V1.6.2 (2015-10) 2 Reference REN/JTC-DVB-362 Keywords audio, broadcasting, data, digital, DVB, MPEG, terrestr
2、ial, TV, video 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 Grasse (06) N 7803/88 Important notice The present document can be down
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6、teeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written a
7、uthorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2015. European Broadcasting Union 2015. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the
8、benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 300 744 V1.6.2 (2015-10) 3 Contents Intellectual Property R
9、ights 5g3Foreword . 5g3Modal verbs terminology 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 6g33 Definitions, symbols and abbreviations . 7g33.1 Definitions 7g33.2 Symbols 7g33.3 Abbreviations . 8g34 Baseline system 9g34.1 General considerations . 9g34.2 Int
10、erfacing 10g34.3 Channel coding and modulation . 11g34.3.1 Transport multiplex adaptation and randomization for energy dispersal 11g34.3.2 Outer coding and outer interleaving 11g34.3.3 Inner coding 13g34.3.4 Inner interleaving 14g34.3.4.0 General 14g34.3.4.1 Bit-wise interleaving . 14g34.3.4.2 Symbo
11、l interleaver 18g34.3.5 Signal constellations and mapping 20g34.4 OFDM frame structure . 24g34.5 Reference signals 26g34.5.0 General 26g34.5.1 Functions and derivation . 26g34.5.2 Definition of reference sequence 26g34.5.3 Location of scattered pilot cells 27g34.5.4 Location of continual pilot carri
12、ers . 28g34.5.5 Amplitudes of all reference information . 28g34.6 Transmission Parameter Signalling (TPS) . 28g34.6.0 General 28g34.6.1 Scope of the TPS 29g34.6.2 TPS transmission format . 30g34.6.2.0 General 30g34.6.2.1 Initialization 30g34.6.2.2 Synchronization 30g34.6.2.3 TPS length indicator 30g
13、34.6.2.4 Frame number . 31g34.6.2.5 Constellation . 31g34.6.2.6 Hierarchy information . 31g34.6.2.7 Code rates 31g34.6.2.8 Guard Intervals 32g34.6.2.9 Transmission mode . 32g34.6.2.10 Cell identifier 32g34.6.2.11 Error protection of TPS . 33g34.6.3 TPS modulation 33g34.7 Number of RS-packets per OFD
14、M super-frame . 33g34.8 Spectrum characteristics and spectrum mask . 34g34.8.1 Spectrum characteristics . 34g34.8.2 Out-of-band spectrum mask (for 8 MHz channels) 35g34.8.3 Centre frequency of RF signal (for 8 MHz UHF channels) 38g3Annex A (informative): Simulated system performance for 8 MHz channe
15、ls 39g3ETSI ETSI EN 300 744 V1.6.2 (2015-10) 4 Annex B (informative): Definition of P1and F1. 42g3Annex C (informative): Interleaving example . 44g3Annex D (informative): Guidelines to implementation of the emitted signal 45g3D.0 General . 45g3D.1 Use of the FFT 45g3D.2 Choice of “baseband“ centre f
16、requency . 45g3D.3 Other potential difficulties 46g3Annex E (normative): Values for 6 MHz and 7 MHz channels . 47g3Annex F (normative): Additional features for DVB Handheld terminals (DVB-H) . 50g3F.0 General . 50g3F.1 General Considerations 50g3F.2 Additional features overview . 50g3F.3 Additional
17、baseline features . 51g3F.3.0 General . 51g3F.3.1 Channel coding and modulation . 51g3F.3.1.0 General 51g3F.3.1.1 Inner interleaving 51g3F.3.1.1.0 General 51g3F.3.1.1.1 Bit-wise interleaving . 52g3F.3.1.1.2 Symbol interleaver 52g3F.3.1.1.2.0 General 52g3F.3.1.1.2.1 Native symbol interleaver 52g3F.3.
18、1.1.2.2 In-depth symbol interleavers . 53g3F.3.1.1.2.3 Permutation function . 53g3F.3.2 OFDM frame structure . 54g3F.3.3 Reference signals 56g3F.3.3.0 General 56g3F.3.3.1 Location of continual pilot carriers . 56g3F.3.4 Transmission Parameter Signalling (TPS) . 56g3F.3.4.0 General 56g3F.3.4.1 Scope
19、of the TPS 56g3F.3.4.2 TPS transmission format . 56g3F.3.4.2.0 General 56g3F.3.4.2.1 TPS length indicator 57g3F.3.4.2.2 Hierarchy and Interleaving information 57g3F.3.4.2.3 Transmission mode . 57g3F.3.4.2.4 DVB-H signalling . 57g3F.3.5 Transmission Capacities . 58g3F.3.5.0 General 58g3F.3.5.1 Number
20、 of RS-packets per Super Frame 58g3F.3.5.2 Useful Bitrate 58g3F.3.6 Spectrum characteristics and spectrum mask . 60g3F.3.6.0 General 60g3F.3.6.1 Spectrum characteristics . 60g3Annex G (normative): 5 MHz channel bandwidth operation . 61g3History 64g3ETSI ETSI EN 300 744 V1.6.2 (2015-10) 5 Intellectua
21、l 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 can be found in ETSI SR 000 314: “Intellectual Property Rights (IP
22、Rs); 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 c
23、arried 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
24、Committee (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 speci
25、fic 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 standardization of radio and television receivers. The EBU is a professional association of broadcasting orga
26、nizations 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 G
27、RAND 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 the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digit
28、al 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, of the consumer electronics and the broadcast industry. National transposition dates Date of latest annou
29、ncement of this EN (doa): 31 January 2016 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 July 2016 Date of withdrawal of any conflicting National Standard (dow): 31 July 2016 Modal verbs terminology In the present document “shall“, “shall not“, “should“, “s
30、hould not“, “may“, “need not“, “will“, “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. ETSI ETSI
31、 EN 300 744 V1.6.2 (2015-10) 6 1 Scope The present document describes a baseline transmission system for digital terrestrial TeleVision (TV) broadcasting. It specifies the channel coding/modulation system intended for digital multi-programme LDTV/SDTV/EDTV/HDTV terrestrial services. The scope is as
32、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 quality targets; - it specifies the digitally modulated signal in order to allow compatib
33、ility 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 different implementation solutions. However, it is necessary in this text to refer t
34、o 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 inner interleaver, to mitigate the effects of the high level of man-made noise affecti
35、ng 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 transmission system in 5 MHz channel bandwidth, even outside of the traditional broadcasting b
36、ands (annex G). 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference
37、document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee t
38、heir long term validity. The following referenced documents are necessary for the application of the present document. 1 ISO/IEC 13818 (Parts 1 to 3): “Information technology - Generic coding of moving pictures and associated audio information“. 2 ETSI EN 300 421: “Digital Video Broadcasting (DVB);
39、Framing structure, channel coding and modulation for 11/12 GHz satellite services“. 3 ETSI EN 300 429: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for cable systems“. 2.2 Informative references References are either specific (identified by date of publication
40、and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. ETSI ETSI EN 300 744 V1.6.2 (2015-10) 7 NOTE: While any hyperlinks included
41、 in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 Peterson and Weldon: “Error c
42、orrecting codes“, second edition, MIT Press, 1972. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: constraint length: number of delay elements +1 in the convolutional coder 3.2 Symbols For the purposes of t
43、he present document, the following symbols apply: A(e) output vector from inner bit interleaver e ae,w bit number w of inner bit interleaver output stream e constellation ratio which determines the QAM constellation for the modulation for hierarchical transmission B(e) input vector to inner bit inte
44、rleaver e be,w bit number w of inner bit interleaver input steam e be,dooutput bit number do of demultiplexed bit stream number e of the inner interleaver demultiplexer bibit number i of the cell identifier cm,l,kcomplex cell for frame m in OFDM symbol l at carrier k CkComplex modulation for a refer
45、ence signal at carrier k Cl,kComplex modulation for a TPS signal at carrier k in symbol l C/N Carrier-to-Noise ratio time duration of the guard interval dfreeconvolutional code free distance fccentre frequency of the emitted signal G1, G2convolutional code Generator polynomials g(x) Reed-Solomon cod
46、e generator polynomial h(x) BCH code generator polynomial H(q) inner symbol interleaver permutation He(w) inner bit interleaver permutation i priority stream index I Interleaving depth of the outer convolutional interleaver I0,I1,I2,I3,I4,I5 inner Interleavers j branch index of the outer interleaver
47、 k carrier number index in each OFDM symbol K number of active carriers in the OFDM symbol Kmin, Kmaxcarrier number of the lower and largest active carrier respectively in the OFDM signal l OFDM symbol number index in an OFDM frame m OFDM frame number index m OFDM super-frame number index M convolut
48、ional interleaver branch depth for j = 1, M = N/I n transport stream sync byte number N length of error protected packet in bytes Nmaxinner symbol interleaver block size p scattered pilot insertion index p(x) RS code field generator polynomial Pk(f) Power spectral density for carrier k P(n) interlea
49、ving Pattern of the inner symbol interleaver ETSI ETSI EN 300 744 V1.6.2 (2015-10) 8 ricode rate for priority level i siTPS bit index t number of bytes which can be corrected by the Reed-Solomon decoder T elementary Time period TSduration of an OFDM symbol TFTime duration of a frame TUTime duration of the useful (orthogonal) part of a symbol, without the guard interval u bit numbering index v number of bits per modulation symbol wk value of reference PRBS sequence applicable to carrier k xdiinput bit number di to the inner interleaver demultiplexer xdi hig
