Annex 1 Summaries of Digital Systems
1 Summary of Digital System A
2 Summary of Digital System F
3 Summary of Digital System C
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 Hybrid Layer 1
2.2 Waveforms and spectra
2.2.1 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 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
3.3 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
8.1.1 Emission limits for hybrid
mode operation
8.1.2 Emission limits
for all-digital mode operation
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