IEC 62272-1:2003

FOREWORD
INTRODUCTION
1 Scope
2 References
3 Definitions, symbols, abbreviations and conventions
   3.1 Definitions
   3.2 Symbols
   3.3 Abbreviations
   3.4 Convention
4 General characteristics
   4.1 System overview
   4.2 System architecture
   4.3 Source coding
   4.4 Transmission modes
        4.4.1 Signal bandwidth related parameters
        4.4.2 Transmission efficiency related parameters
              4.4.2.1 Coding rates and constellations
              4.4.2.2 OFDM parameter set
5 Source coding modes
   5.1 Overview
        5.1.1 AAC Audio Coding
        5.1.2 MPEG CELP coding
        5.1.3 MPEG HVXC coding
        5.1.4 SBR coding
   5.2 UEP and audio super framing
   5.3 AAC coding
        5.3.1 AAC
              5.3.1.1 AAC audio super frame
        5.3.2 AAC + SBR
   5.4 MPEG CELP coding
        5.4.1 MPEG CELP
              5.4.1.1 CELP audio super frame
   5.5 HVXC
        5.5.1 Definitions
              5.5.1.1 HVXC source coder parameters
              5.5.1.2 CRC bits for fixed bit rate modes
        5.5.2 HVXC decoder
        5.5.3 HVXC encoder
              5.5.3.1 LPC analysis and LSP quantization
              5.5.3.2 Open loop pitch search
              5.5.3.3 Harmonic magnitude and fine pitch estimation
              5.5.3.4 Vector quantization of harmonic magnitudes
              5.5.3.5 Voiced/Unvoiced decision
              5.5.3.6 VXC coding of unvoiced signals
        5.5.4 HVXC channel coding
              5.5.4.1 Protected Bit Selection
              5.5.4.2 Syntax of DRM HVXC error resilience
                       (ErHVXCfixframe_CRC)
        5.5.5 Category Interleaving
        5.5.6 HVXC error detection and concealment
              5.5.6.1 Cyclic Redundancy Code (CRC)
              5.5.6.2 Error concealment
   5.6 SBR
        5.6.1 Conceptual overview
        5.6.2 AAC + SBR Decoding Process
              5.6.2.1 Analysis Filterbank
              5.6.2.2 Synthesis Filterbank
              5.6.2.3 Frequency Band Tables
              5.6.2.4 T/F Grid Control
              5.6.2.5 Huffman Decoder
              5.6.2.6 HF Generator
              5.6.2.7 High frequency adjustment
              5.6.2.8 Low Complexity Stereo
        5.6.3 AAC + SBR Protocol
              5.6.3.1 AAC + SBR syntax
              5.6.3.2 SBR bit stream element definitions
6 Multiplex definition
   6.1 Introduction
   6.2 Main Service Channel
        6.2.1 Introduction
        6.2.2 Structure
        6.2.3 Building the MSC
              6.2.3.1 Multiplex frames
              6.2.3.2 Hierarchical frames
        6.2.4 Reconfiguration
   6.3 Fast Access Channel
        6.3.1 Introduction
        6.3.2 Structure
        6.3.3 Channel parameters
        6.3.4 Service parameters
        6.3.5 CRC
        6.3.6 FAC repetition
   6.4 Service Description Channel
        6.4.1 Introduction
        6.4.2 Structure
        6.4.3 Data Entities
              6.4.3.1 Multiplex description data entity - type
              6.4.3.2 Label data entity - type
              6.4.3.3 Conditional access parameters data
                       entity - type
              6.4.3.4 Frequency information data entity - type
              6.4.3.5 Frequency schedule data entity - type
              6.4.3.6 Application information data entity -
                       type
              6.4.3.7 Announcement support and switching
                       entity - type
              6.4.3.8 Region definition data entity - type
              6.4.3.9 Time and date information data entity -
                       type
              6.4.3.10 Audio information data entity - type
              6.4.3.11 FAC channel parameters data entity - type
              6.4.3.12 Linkage data entity - type 11
              6.4.3.13 Language and country data entity - type
              6.4.3.14 Other data entities
        6.4.4 Summary of data entity characteristics
        6.4.5 Changing the content of the SDC
        6.4.6 Signalling of reconfigurations
              6.4.6.1 Service reconfigurations
              6.4.6.2 Channel reconfigurations
   6.5 Text message application
        6.5.1 Structure
   6.6 Packet mode
        6.6.1 Packet structure
              6.6.1.1 Header
              6.6.1.2 Data field
              6.6.2 Asynchronous streams
        6.6.3 Files
        6.6.4 Choosing the packet length
7 Channel coding and modulation
   7.1 Introduction
   7.2 Transport multiplex adaptation and Energy dispersal
        7.2.1 Transport multiplex adaptation
              7.2.1.1 MSC
              7.2.1.2 FAC
              7.2.1.3 SDC
        7.2.2 Energy dispersal
   7.3 Coding
        7.3.1 Multilevel coding
              7.3.1.1 Partitioning of bitstream in SM
              7.3.1.2 Partitioning of bitstream in HMsym
              7.3.1.3 Partitioning of bitstream in HMmix
        7.3.2 Component Code
        7.3.3 Bit Interleaving
              7.3.3.1 FAC
              7.3.3.2 SDC
              7.3.3.3 MSC
   7.4 Signal constellations and mapping
   7.5 Application of coding to the channels
        7.5.1 Coding the MSC
              7.5.1.1 SM
              7.5.1.2 HMsym
              7.5.1.3 HMmix
        7.5.2 Coding the SDC
        7.5.3 Coding the FAC
   7.6 MSC Cell Interleaving
   7.7 Mapping of MSC cells on the transmission super frame
        structure
8 Transmission structure
   8.1 Transmission frame structure and modes
   8.2 Propagation-related OFDM parameters
   8.3 Signal bandwidth related parameters
        8.3.1 Parameter definition
        8.3.2 Simulcast transmission
   8.4 Pilot cells
        8.4.1 Functions and derivation
        8.4.2 Frequency references
              8.4.2.1 Cell positions
              8.4.2.2 Cell gains and phases
        8.4.3 Time references
              8.4.3.1 Cell positions and phases
              8.4.3.2 Cell gains
        8.4.4 Gain references
              8.4.4.1 Cell positions
              8.4.4.2 Cell gains
              8.4.4.3 Cell phases
   8.5 Control cells
        8.5.1 General
        8.5.2 FAC cells
              8.5.2.1 Cell positions
              8.5.2.2 Cell gains and phases
        8.5.3 SDC cells
              8.5.3.1 Cell positions
              8.5.3.2 Cell gains and phases
   8.6 Data cells
        8.6.1 Cell positions
        8.6.2 Cell gains and phases
Annex A (informative) Simulated system performance
Annex B (informative) Definition of channel profiles
Annex C (informative) Example of mapping of logical frames
        to multiplex frames
Annex D (normative) Calculation of the CRC word
Annex E (informative) Indicative RF Protection ratios
Annex F (informative) Guidelines for transmitter implementation
Annex G (informative) Guidelines for receiver implementation
Annex H (informative) Service capacity and bit rates
Annex I (normative) SBR tables
Annex J (informative) Numbers of input bits
Annex K (informative) Simulcast transmission
Annex L (informative) Pilot reference illustrations
Annex M (informative) MSC configuration examples
Annex N (informative) HVXC parameters
Bibliography

Describes 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 [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 upon 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.