CONTENTS
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
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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