Recommendation ITU-R BS.1114-11 (06/2019) Systems for terrestrial digital sound broadcasting to vehicular, portable and fixed receivers in the frequency range 30-3 000 MHz
Foreword
Scope
Annex 1  Summaries of Digital Systems
1 Summary of Digital System A
2 Summary of Digital System F
3 Summary of Digital System C
4 Summary of Digital System G
5 Summary of Digital System H
6 Summary of Digital System I
Annex 2  Digital System A
1 Introduction
2 Use of a layered model
3 Application layer
     3.1 Facilities offered by the System
     3.2 Audio quality
4 Presentation layer
     4.1 Audio source encoding
     4.2 Audio decoding
     4.3 Audio presentation
     4.4 Presentation of service information
5 Session layer
     5.1 Programme selection
     5.2 Conditional access
6 Transport layer
     6.1 Programme services
     6.2 Main service multiplex
     6.3 Ancillary data
     6.4 Association of data
7 Network layer
     7.1 ISO audio frames
8 Data link layer
     8.1 The transmission frame
9 The physical layer
     9.1 Energy dispersal
     9.2 Convolutional encoding
     9.3 Time interleaving
     9.4 Frequency interleaving
     9.5 Modulation by 4-DPSK OFDM
     9.6 Transmission signal spectrum of System A
10 RF performance characteristics of System A
     10.1 BER vs. S/N (in 1.5 MHz) in a Gaussian channel
     10.2 BER vs. S/N (in 1.5 MHz) in a Rayleigh channel simulated in urban environment
     10.3 BER vs. S/N (in 1.5 MHz) in a Rayleigh channel simulated in rural environment
Annex 3  Digital System F
1 Introduction
2 Features of System F
     2.1 Ruggedness of System F
     2.2 Wide variety of transmission
     2.3 Flexibility
     2.4 Commonality and interoperability
     2.5 Efficient transmission and source coding
     2.6 Independency of broadcasters
     2.7 Low-power consumption
     2.8 Hierarchical transmission and partial reception
3 Transmission parameters
4 Source coding
5 Multiplexing
     5.1 Multiplex frame
6 Channel coding
     6.1 Functional block diagram of channel coding
     6.2 Outer coding
     6.3 Energy dispersal
     6.4 Delay adjustment
     6.5 Byte-wise interleaving (inter-code interleaving)
     6.6 Inner coding (convolutional codes)
7 Modulation
     7.1 Delay adjustment for bit interleave
     7.2 Bit interleaving and mapping
     7.3 Data segment
     7.4 Synthesis of layer-data streams
     7.5 Time interleaving
     7.6 Frequency interleaving
     7.7 OFDM segment-frame structure
8 Spectrum mask
9 RF performance characteristics
     9.1 BER vs. C/N in a Gaussian channel
     9.2 BER vs. C/N in a multipath channel
     9.3 BER vs. C/N in a Rayleigh channel
Annex 4  Digital System C
1 System overview
2 IBOC layers
     2.1 Layer 1
     2.2 Waveforms and spectra
          2.2.1 Main hybrid waveform
          2.2.2 Extended hybrid waveform
          2.2.3 All digital waveform
     2.3 System control channel
     2.4 Logical channels
          2.4.1 Primary logical channels
          2.4.2 Secondary logical channels
          2.4.3 Logical channel functionality
     2.5 Layer 1 functional components
          2.5.1 Service access points
          2.5.2 Scrambling
          2.5.3 Channel encoding
          2.5.4 Interleaving
          2.5.5 System control processing
          2.5.6 OFDM subcarrier mapping
          2.5.7 OFDM signal generation
          2.5.8 Transmission subsystem
3 Functional description
     3.1 Introduction
     3.2 Transmission subsystem
          3.2.1 Introduction
          3.2.2 Diversity delay
          3.2.3 Analogue FM modulator
          3.2.4 Analogue/digital combiner
          3.2.5 All-digital signal
     3.3 Use of on channel repeaters
     3.4 Global positioning system (GPS) synchronization
4 Digital sideband levels
5 Spectrum for hybrid mode
6 Spectrum for extended hybrid mode
7 Spectrum for all digital mode
8 Emission limitations
     8.1 Emission limits for IBOC operation with region II practiced analogue mask
          8.1.1 Emission limits for hybrid mode operation
          8.1.2 Emission limits for all-digital mode operation
     8.2 Emission limits for IBOC operation with region I practiced analogue mask
9 Summary of laboratory test results
     9.1 Performance in Gaussian noise
     9.2 Performance in Rayleigh fading
          9.2.1 Urban fast (UF)
          9.2.2 Urban slow (US)
          9.2.3 Rural fast (RF)
          9.2.4 Terrain obstructed fast (TO)
     9.3 Performance in the presence of independently faded interference
          9.3.1 Single first-adjacent interference
          9.3.2 Single co-channel interference
          9.3.3 Single second-adjacent interference
     9.4 Conclusions
Annex 5  Digital System G
1 Introduction
2 System architecture
3 Audio coding, text messages and packet data
     3.1 Audio
     3.2 Text message application
     3.3 Packet data mode
4 Multiplex, including special channels
5 Channel coding and modulation
     5.1 Introduction
     5.2 Multilevel coding
     5.3 Coding the MSC
     5.4 Coding the SDC
     5.5 Coding the FAC
6 Transmission structure
7 Combined transmission of digital and analogue signals
8 Simulated system performance
Annex 6  Digital System H
1 Introduction
2 System Structure
3 Features of Digital System H
     3.1 Robustness
     3.2 Flexible spectrum-occupancy modes
     3.3 Various transmission modes
     3.4 Different FEC code rates and mapping schemes
4 Source coding
5 Multiplex frame and logical frame
6 Channel encoding and modulation
     6.1 Energy dispersal
     6.2 Channel coding
          6.2.1 Convolutional encoding
          6.2.2  LDPC encoding
     6.3 Bit interleaving
     6.4 Constellation mapping
     6.5 Active sub-carrier of OFDM symbol
          6.5.1 Continuous pilot
          6.5.2 Scattered pilot
          6.5.3 Data sub-carriers
     6.6 Sub-carriers interleaving for MSD symbols
     6.7 OFDM signal generation
     6.8 Logical frame, sub-frame allocation and physical frame
7 Spectrum Mask
8 Summary of laboratory test results
     8.1 BER vs. C/N in a Gaussian channel
     8.2 BER versus C/N in a Multipath channel
Annex 7  Digital System I
1 Introduction
2 Architectural and protocol stack model
3 Key technologies
4 Physical and link layers
5 Performance of system
6 Summary of system parameters