1、BRITISH STANDARD BS EN 62272-1:2003 Digital Radio Mondiale (DRM) Part 1: System specification The European Standard EN 62272-1:2003 has the status of a British Standard ICS 33.060.20 BS EN 62272-1:2003 This British Standard was published under the authority of the Standards Policy and Strategy Commi
2、ttee on 16 February 2004 BSI 16 February 2004 ISBN 0 580 43399 4 National foreword This British Standard is the official English language version of EN 62272-1:2003. It is identical with IEC 62272-1:2003. The UK participation in its preparation was entrusted to Technical Committee EPL/103, Transmitt
3、ing equipment for radiocommunication, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be
4、found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are r
5、esponsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and ke
6、ep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 191 and a back cover. The BSI copyright notice displayed in this document
7、indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 62272-1 NORME EUROPENNE EUROPISCHE NORM December 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europische
8、s Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62272-1:2003 E ICS 33.060.20 English version Digital Radio Mondiale (DRM) Part
9、1: System specification (IEC 62272-1:2003) Digital Radio Mondiale (DRM) Partie 1: Spcification du systme (CEI 62272-1:2003) Digital Radio Mondiale (DRM) Teil 1: Systemspezifikation (IEC 62272-1:2003) This European Standard was approved by CENELEC on 2003-09-23. CENELEC members are bound to comply wi
10、th the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretar
11、iat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the
12、official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and Unit
13、ed Kingdom. Foreword The text of document 103/32/FDIS, future edition 1 of IEC 62272-1, prepared by IEC TC 103, Transmitting equipment for radiocommunication, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62272-1 on 2003-09-23. The following dates were fixed: lates
14、t date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-10-01 Annexes designated “normative“ are part of the
15、body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes D and I are normative and annexes A to C and E to H and J to N are informative. _ Endorsement notice The text of the International Standard IEC 62272-1:2003 was approved by CENELEC as a E
16、uropean Standard without any modification. _ Page2 EN622721:200362272-1 IEC:2003 3 CONTENTS 7 INTRODUCTION7 1 Scope.8 2 References.8 3 Definitions, symbols, abbreviations and conventions.8 3.1 Definitions.8 3.2 Symbols9 3.3 Abbreviations10 3.4 Convention10 4 General characteristics 11 4.1 System ove
17、rview.11 4.2 System architecture.11 4.3 Source coding13 4.4 Transmission modes14 4.4.1 Signal bandwidth related parameters.14 4.4.2 Transmission efficiency related parameters 14 4.4.2.1 Coding rates and constellations.14 4.4.2.2 OFDM parameter set.14 5 Source coding modes 16 5.1 Overview.16 5.1.1 AA
18、C Audio Coding .16 5.1.2 MPEG CELP coding17 5.1.3 MPEG HVXC coding17 5.1.4 SBR coding18 5.2 UEP and audio super framing .18 5.3 AAC coding19 5.3.1 AAC.19 5.3.1.1 AAC audio super frame.20 5.3.2 AAC + SBR .22 5.4 MPEG CELP coding.23 5.4.1 MPEG CELP.23 5.4.1.1 CELP audio super frame .24 5.5 HVXC.27 5.5
19、.1 Definitions.28 5.5.1.1 HVXC source coder parameters28 5.5.1.2 CRC bits for fixed bit rate modes28 5.5.2 HVXC decoder28 5.5.3 HVXC encoder29 5.5.3.1 LPC analysis and LSP quantization 30 5.5.3.2 Open loop pitch search30 5.5.3.3 Harmonic magnitude and fine pitch estimation.30 5.5.3.4 Vector quantiza
20、tion of harmonic magnitudes30 5.5.3.5 Voiced/Unvoiced decision.30 5.5.3.6 VXC coding of unvoiced signals.30 5.5.4 HVXC channel coding.31 5.5.4.1 Protected Bit Selection 31 5.5.4.2 Syntax of DRM HVXC error resilience (ErHVXCfixframe_CRC)33 5.5.5 Category Interleaving 37 Page3 EN622721:200362272-1 IEC
21、:2003 4 5.5.6 HVXC error detection and concealment38 5.5.6.1 Cyclic Redundancy Code (CRC).38 5.5.6.2 Error concealment .38 5.5.6.2.1 Parameter replacement39 5.6 SBR.41 5.6.1 Conceptual overview.41 5.6.2 AAC + SBR Decoding Process .42 5.6.2.1 Analysis Filterbank43 5.6.2.2 Synthesis Filterbank43 5.6.2
22、.3 Frequency Band Tables.45 5.6.2.3.1 Master Frequency Band Table.45 5.6.2.3.2 Derived Frequency Band Tables .46 5.6.2.4 T/F Grid Control50 5.6.2.5 Huffman Decoder52 5.6.2.5.1 Envelope and Noise Floor Decoding.52 5.6.2.5.2 Dequantization and Stereo Decoding 53 5.6.2.6 HF Generator.54 5.6.2.6.1 Limit
23、er Frequency Band Table 0 57 5.6.2.7 High frequency adjustment59 5.6.2.7.1 Mapping.59 5.6.2.7.2 Estimation of Current Envelope 59 5.6.2.7.3 Calculation of Noise Levels 60 5.6.2.7.4 Calculation of Gain60 5.6.2.7.5 Assembling HF Signals .61 5.6.2.8 Low Complexity Stereo.62 5.6.2.8.1 Process.62 5.6.3 A
24、AC + SBR Protocol.64 5.6.3.1 AAC + SBR syntax .64 5.6.3.2 SBR bit stream element definitions.71 6 Multiplex definition 75 6.1 Introduction.75 6.2 Main Service Channel.75 6.2.1 Introduction75 6.2.2 Structure.75 6.2.3 Building the MSC76 6.2.3.1 Multiplex frames .76 6.2.3.2 Hierarchical frames .76 6.2.
25、4 Reconfiguration .76 6.3 Fast Access Channel .76 6.3.1 Introduction76 6.3.2 Structure.76 6.3.3 Channel parameters .77 6.3.4 Service parameters.78 6.3.5 CRC.80 6.3.6 FAC repetition.80 6.4 Service Description Channel.80 6.4.1 Introduction80 6.4.2 Structure.81 6.4.3 Data Entities.81 6.4.3.1 Multiplex
26、description data entity - type 082 6.4.3.2 Label data entity - type 1.83 6.4.3.3 Conditional access parameters data entity - type 284 6.4.3.4 Frequency information data entity - type 3 .84 6.4.3.5 Frequency schedule data entity - type 4 87 6.4.3.6 Application information data entity - type 5 .87 6.4
27、.3.7 Announcement support and switching entity - type 6 .89 Page4 EN622721:200362272-1 IEC:2003 5 6.4.3.8 Region definition data entity - type 7 90 6.4.3.9 Time and date information data entity - type 8 .90 6.4.3.10 Audio information data entity - type 9 90 6.4.3.11 FAC channel parameters data entit
28、y - type 10 92 6.4.3.12 Linkage data entity - type 11.94 6.4.3.13 Language and country data entity - type 12 95 6.4.3.14 Other data entities95 6.4.4 Summary of data entity characteristics95 6.4.5 Changing the content of the SDC 96 6.4.6 Signalling of reconfigurations .96 6.4.6.1 Service reconfigurat
29、ions97 6.4.6.2 Channel reconfigurations.97 6.5 Text message application97 6.5.1 Structure.97 6.6 Packet mode99 6.6.1 Packet structure99 6.6.1.1 Header.100 6.6.1.2 Data field.100 6.6.2 Asynchronous streams .100 6.6.3 Files.101 6.6.4 Choosing the packet length101 7 Channel coding and modulation101 7.1
30、 Introduction.101 7.2 Transport multiplex adaptation and Energy dispersal.102 7.2.1 Transport multiplex adaptation102 7.2.1.1 MSC102 7.2.1.2 FAC.104 7.2.1.3 SDC.104 7.2.2 Energy dispersal.105 7.3 Coding.106 7.3.1 Multilevel coding.106 7.3.1.1 Partitioning of bitstream in SM .108 7.3.1.2 Partitioning
31、 of bitstream in HMsym109 7.3.1.3 Partitioning of bitstream in HMmix 110 7.3.2 Component Code.110 7.3.3 Bit Interleaving 116 7.3.3.1 FAC.116 7.3.3.2 SDC.116 7.3.3.3 MSC117 7.4 Signal constellations and mapping118 7.5 Application of coding to the channels.122 7.5.1 Coding the MSC122 7.5.1.1 SM.122 7.
32、5.1.2 HMsym123 7.5.1.3 HMmix123 7.5.2 Coding the SDC.124 7.5.3 Coding the FAC.124 7.6 MSC Cell Interleaving 125 7.7 Mapping of MSC cells on the transmission super frame structure .126 8 Transmission structure 128 8.1 Transmission frame structure and modes128 8.2 Propagation-related OFDM parameters12
33、9 8.3 Signal bandwidth related parameters 129 8.3.1 Parameter definition.129 8.3.2 Simulcast transmission 131 Page5 EN622721:200362272-1 IEC:2003 6 8.4 Pilot cells.131 8.4.1 Functions and derivation131 8.4.2 Frequency references.131 8.4.2.1 Cell positions.132 8.4.2.2 Cell gains and phases 132 8.4.3
34、Time references .132 8.4.3.1 Cell positions and phases.133 8.4.3.2 Cell gains.135 8.4.4 Gain references 135 8.4.4.1 Cell positions.135 8.4.4.2 Cell gains.135 8.4.4.3 Cell phases.136 8.4.4.3.1 Procedure for calculation of cell phases136 8.4.4.3.2 Robustness mode A .136 8.4.4.3.3 Robustness mode B .13
35、7 8.4.4.3.4 Robustness mode C .137 8.4.4.3.5 Robustness mode D .137 8.5 Control cells138 8.5.1 General.138 8.5.2 FAC cells.138 8.5.2.1 Cell positions.138 8.5.2.2 Cell gains and phases 140 8.5.3 SDC cells.140 8.5.3.1 Cell positions.140 8.5.3.2 Cell gains and phases 140 8.6 Data cells.140 8.6.1 Cell p
36、ositions.140 8.6.2 Cell gains and phases.141 Annex A (informative) Simulated system performance142 Annex B (informative) Definition of channel profiles 143 Annex C (informative) Example of mapping of logical frames to multiplex frames145 Annex D (normative) Calculation of the CRC word.146 Annex E (i
37、nformative) Indicative RF Protection ratios.148 Annex F (informative) Guidelines for transmitter implementation.150 Annex G (informative) Guidelines for receiver implementation 151 Annex H (informative) Service capacity and bit rates.155 Annex I (normative) SBR tables .156 Annex J (informative) Numb
38、ers of input bits176 Annex K (informative) Simulcast transmission 180 Annex L (informative) Pilot reference illustrations.182 Annex M (informative) MSC configuration examples186 Annex N (informative) HVXC parameters189 Bibliography.191 Page6 EN622721:200362272-1 IEC:2003 7 INTRODUCTION This part of
39、IEC 62272 describes as follows the frequency bands used for broadcasting below 30 MHz: Low frequency (LF) band - from 148,5 kHz to 283,5 kHz, in ITU Region 1 1 *only; Medium frequency (MF) band - from 526,5 kHz to 1 606,5 kHz, in ITU Regions 1 1 and 3 1 and from 525 kHz to 1 705 kHz in ITU Region 2
40、1; High frequency (HF) bands - a set of individual broadcasting bands in the frequency range 2,3 MHz to 27 MHz, generally available on a Worldwide basis. These bands offer unique propagation capabilities that permit the achievement of: Large coverage areas, whose size and location may be dependent u
41、pon the time of day, season of the year or period in the (approximately) 11 year sunspot cycle; Portable and mobile reception with relatively little impairment caused by the environment surrounding the receiver. There is thus a desire to continue broadcasting in these bands, perhaps especially in th
42、e case of international broadcasting where the HF bands offer the only reception possibilities which do not also involve the use of local repeater stations. However, broadcasting services in these bands: use analogue techniques; are subject to limited quality; are subject to considerable interferenc
43、e as a result of the long-distance propagation mechanisms which prevail in this part of the frequency spectrum and the large number of users. As a direct result of the above considerations, there is a desire to effect a transfer to digital transmission and reception techniques in order to provide th
44、e increase in quality which is needed to retain listeners who, increasingly, have a wide variety of other programme reception media possibilities, usually already offering higher quality and reliability. In order to meet the need for a digital transmission system suitable for use in all of the bands
45、 below 30 MHz, the Digital Radio Mondiale (DRM) consortium was formed in early 1998. The DRM consortium is a non-profit making body which seeks to develop and promote the use of the DRM system worldwide. Its members include broadcasters, network providers, receiver and transmitter manufacturers and
46、research institutes. More information is available from their website (http:/www.drm.org/). *The figures in square brackets refer to the references given in clause 2. Page7 EN622721:200362272-1 IEC:2003 8 Digital Radio Mondiale (DRM) Part 1: System specification 1 Scope This part of IEC 62272 gives
47、the specification for the Digital Radio Mondiale (DRM) system for digital transmissions in the broadcasting bands below 30 MHz. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific
48、 (identified by date of publication 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. 1 ITU-R Radio Regulations. 2 ISO/IEC 14496-3:2001, Information technology - Coding of a
49、udio-visual objects - Part 3: Audio 3 Not used 4 ETSI EN 300 401: Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers 5 EN 50067: Specification of the radio data system (RDS) for VHF/FM sound broadcasting in the frequency range from 87,5 to 108,0 MHz 6 ISO/IEC 10646-1: Information technology - Universal Multiple-Octet Coded Character
