Policy on Intellectual Property Right (IPR)
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
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
3.3 Transmission modes
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
10.4 Sound quality versus RF S/N
10.5 Capability for operating in single‑frequency networks
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