1、 Recommendation ITU-R BT.1299-1(03/2010)The basic elements of a worldwide common family of systems for digital terrestrial television broadcastingBT SeriesBroadcasting service(television)ii Rec. ITU-R BT.1299-1 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable,
2、efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Secto
3、r are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R
4、 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can
5、 also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M
6、 Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum
7、 management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2010 ITU 2010 All rights reserved. N
8、o part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.1299-1 1 RECOMMENDATION ITU-R BT.1299-1*The basic elements of a worldwide common family of systems for digital terrestrial television broadcasting*(1997-2010) Scope This Recommenda
9、tion describes principles of the common elements, including baseband source coding, multiplexing, and modulation and channel coding, for digital terrestrial television broadcasting systems. The ITU Radiocommunication Assembly, considering a) the many benefits of common television broadcasting standa
10、rds; b) that ITU-R has produced a series of Recommendations on video and audio source coding, data coding, multiplexing, and modulation and channel coding for digital terrestrial television broadcasting; c) that transition from analogue to digital terrestrial television continues to be implemented a
11、round the world; d) that differing regulatory, marketing, and delivery environments exist in different parts of the world and that these and other factors will influence the choice of systems, recommends that the elements of a worldwide common family of systems for digital terrestrial television bro
12、adcasting should be based on the following: 1 Systems principles 1.1 The terrestrial system should have maximum commonality with other digital television delivery systems, such as satellite, cable, etc. 1.2 The broadcast systems should be designed as a “container”, able to transport video and audio,
13、 and/or other data services, in a transparent and flexible way (see Recommendations ITU-R BT.1207 and ITU-R BT.1209). *Radiocommunication Study Group 6 made editorial amendments to this Recommendation in 2002 in accordance with Resolution ITU-R 44. *This Recommendation should be brought to the atten
14、tion of Telecommunication Standardization Study Group 9. 2 Rec. ITU-R BT.1299-1 1.3 The systems should permit statistical multiplexing1. 1.4 The base system should be a single layer system capable of conveying, for example, one HDTV service or a number of SDTV quality services. The number of service
15、s per channel will depend on the available total data rate, quality required, programme content and on whether statistical multiplexing is used. 1.5 A service information and header descriptor system should be implemented (see Recommendation ITU-R BT.1300). 2 Baseband coding principles 2.1 The image
16、 coding system should be as given in Recommendation ITU-R BT.1870 (see following Note 1). NOTE 1 Recommendation ITU-R BT.1870 recommends use of the ITU-T Recommendation H.262 (ISO/IEC 13818-2 (MPEG-2 Video) and ITU-T Recommendation H.264 (ISO/IEC 14496-10 (MPEG-4 AVC). 2.2 The sound coding system sh
17、ould be as given in Recommendation ITU-R BS.1196 (see following Note 1). NOTE 1 Recommendation ITU-R BS. 1196 recommends use of ISO/IEC 11172-3 (MPEG-1 Audio) Layer II, ISO/IEC 13818-7 (MPEG-2 AAC) LC or LC with SBR, ISO/IEC 14496-3 (MPEG-4 Audio) AAC-LC, HE-AAC or HE-AACv2, or ETSI TS 102 366 (AC 3
18、 or E-AC-3) for digital television broadcasting emission. 2.3 The quality requirements for the video and audio coding system performance given in Recommendations ITU-R BT.1122 and ITU-R BS.1548 should be duly taken into account (see following Note 1). NOTE 1 The basic audio and video coding specific
19、ations are of syntax only, and leave room for improvement in quality due to improvements in encoder design. 3 Modulation and channel coding principles 3.1 The modulation and channel coding should be selected to allow implementation of the required delivery approach. Possible delivery approaches incl
20、ude single-transmitter-per-channel (as in conventional analogue TV), on-channel repeaters (OCR), gap-fillers (GF), single frequency networks (SFN) at the local and regional levels. Orthogonal frequency division multiplexing (OFDM) or 8-VSB (vestigial sideband) should be used depending, among other t
21、hings, on the delivery environment (see Recommendation ITU-R BT.1306). 1Statistical multiplexing is a technique used for multi-programme transmission in a single channel to improve the overall programme quality or to effectively use the available channel capacity by dynamically allocating the bit-rate to each programme that shares a given channel capacity.
