Digital Radio DAB+: Broadcasting Multimedia System

✍ Scribed by Marian Oziewicz

• Publisher: Springer
• Year: 2021
• Tongue: English
• Leaves: 220
• Category: Library

✦ Synopsis

This book describes the basic functions of the European Digital Radio DAB+ (Digital Audio Broadcasting plus) with its direct possible applications in a simple way. The book refers to fundamentals of DABs 80+ norms and specifications. Presented subjects are indicating problems of DAB signal propagation and possible multimedia applications. The book provides about 130 figures for explaining new concepts in an easy to approach manner. Applications include, but are not limited to audio compression MPEG, OFDM, SFN phasor representation, multiplexes, MOT, and conditional access. The book is intended for those interested in decisions regarding radio at various levels, owners of radio stations, and designers of various multimedia applications of digital radio in the field of security, students of wireless systems, etc.

• Presents the fundamental functions of DAB / DAB+ (Digital Audio Broadcasting) along with its applications

• Outlines the European Digital Radio system

• Explains the functions of worldwide emerging digital radio subsystems

✦ Table of Contents

Preface
Admission
Contents
List of Acronyms
Internet Addresses Associated with the DAB
Chapter 1: Introduction
1.1 Why Digital Radio
1.2 Approaching Concept of Digital Radio
1.2.1 Frequency Blocks for DAB
1.2.2 Multimedia in the DAB+ System
1.2.3 Channels and Subchannels in the DAB System
1.2.4 The Environment for Transmission and Reception of Multimedia Services
References
Chapter 2: Physical Layer of the DAB+ System
2.1 The Block Diagram of a Local Transmitter
2.2 Basic DAB Subsystems
2.2.1 Sound Track in Transmitter
2.2.2 Track of Multimedia Services
2.3 Basic Logical Frames of the DAB and DAB+ Systems
2.4 Audio Encoder in the DAB System (MPEG II)
2.4.1 Properties of the Ear: Static and Dynamic Sound Masking Thresholds
2.4.2 Quantization of Audio Signal: Quantization Noise
2.4.3 Masking Quantization Noise: Sub-band Encoding
2.4.4 Organization of the Outer Frame of the Encoder
2.4.4.1 Determination of the Basic Parameters of the Frame
2.4.4.2 Signal Mono
2.4.4.3 Signal Stereo or Two-Channel Mode
2.4.4.4 Compact Stereo Mode
2.4.4.5 MUSICAM-Surround
2.4.4.6 Decoding Algorithm
2.4.5 Program Associated Data (PAD): F-PAD and X-PAD
2.4.5.1 The Dynamics of Filling Frames
2.4.5.2 Organization of Services Accompanying the Audio Program (PAD)
2.5 Audio Encoder in the DAB+ System
2.6 Mechanisms Securing Quality of Transmission
2.6.1 The CRC Codes of the DAB Frames
2.6.2 Convolutional Encoder with Puncturing
2.6.3 Time Interleaving of the Frames of Encoder
2.7 Role of Multiplexer: DAB Logical Frames
2.8 OFDM Channel Modulator
2.8.1 The Principle of Operation
2.8.1.1 Why Modulator with Multiple Subcarriers
2.8.1.2 Introduction of the Guard Intervals
2.8.1.3 Frequency Characteristic of the OFDM Signal
2.8.1.4 The Doppler Effect: The Impact on Parameters of the DAB Signal
2.8.2 Implementation of the Digital OFDM Modulator
2.8.2.1 Sampling the OFDM Signal
2.8.3 Transforming the DAB Logical Frames into Modulating Vectors
2.8.4 Peak to Average Power Ratio (PAPR): Energy Dissipation
2.8.5 Output Physical Frame of the OFDM Modulator
2.8.6 Mode of the OFDM Channel Encoder in the DAB+ System
2.9 Mapping the Logical DAB Frames onto the Physical OFDM Frames
2.10 Integrated Transmitter Output: The Output Filter
2.10.1 The Output Frequency Mask
2.11 Functional Description of the DAB Receiver
2.11.1 Block Diagram of the DAB Receiver
2.11.2 Recovering the Logical Frames from the OFDM Signal
References
Chapter 3: Impact of the Propagation Channel on Reception Quality of the DAB Signal
3.1 The Baseband Multipath Channel: Phasor Representation of the OFDM Signal
3.1.1 Relations Between the Multipath Profiles, Phasor Representation, and Frequency Envelope of Resulting OFDM Signal
3.1.2 The Impact of Multipath on the Signal Reception: Examples
3.2 Inter-symbol and Inter-tone Interferences
3.2.1 Phasor Representation of the OFDM Paths Outside the Guard Interval
References
Chapter 4: Single-Frequency Networks (SFN)
4.1 Concept of the Single-Frequency Network (SFN)
4.2 Rules for Planning the Single-Frequency Network
4.2.1 The SFN Synchronization
4.2.2 Identification of Transmitters within SFN: Codes TII
4.2.3 Role of Gap Fillers
4.2.4 Local Programs in the SFN Networks
4.3 SFN Signals in the Baseband Channel
4.3.1 Intra-network Signals in the Large SFN Model Network
4.4 Conclusions
References
Chapter 5: DAB Multiplexes
5.1 Concept of Multiplexes
5.2 Planning the Coverage Area for Multiplexes
References
Chapter 6: Logical Channels: Layered Description of Transport in the DAB+ System
6.1 Introduction
6.1.1 The Control Process in the DAB+ System
6.2 Transmission Channels in DAB+ System
6.2.1 Organization of the DAB+ Logical Frames
6.2.2 Channels and Subchannels
6.2.2.1 Transmission of Subchannels
6.3 Organization of Transport in the DAB+ System
6.3.1 Audio in the Stream Mode
6.3.2 Data in the Stream Mode
6.3.3 Packet Mode in the MSC
6.3.4 Packet Transport in the Channel Accompanying Program PAD
6.3.4.1 Transport Layer
6.3.4.2 The Network Layer in the PAD Channel
6.3.5 Data Groups in the Main Service Channel (MSC)
6.4 Identification of Services within the DAB Multiplex
6.4.1 Identifiers of Programs and Services
6.4.2 Labels of Services and Its Components
6.5 The Startup Procedures in the Receiver
6.5.1 Information About the Multiplex Organization
6.5.2 Startup Algorithm after Changes of Service within Multiplex
6.5.3 Reconfiguration of Subchannels and Services
6.6 Optional Parameters of the Programs and Services
6.6.1 Multiplex Parameters Described in the FIG Groups of Type 0
6.6.2 Selected Software Services
References
Chapter 7: Multimedia Applications: Protocol MOT
7.1 The Development of the Concept of ``Value-Added Services´´ in the DAB System
7.2 Multimedia in Broadcasting Systems
7.2.1 Protocol of the Multimedia Objects Transfer (MOT)
7.2.2 Segmentation of MOT Objects in the DAB System: Data Groups
7.2.3 Transport of Individual MOT Objects in the DAB System
7.3 Transmission of Slides in the DAB Channel
7.3.1 Slide Transportation
7.3.2 Parameters for the MOT SlideShow
7.4 Transmission of Audio-Visual Objects: Video
7.4.1 Video Transmission in the DAB System
7.5 Carousel of MOT Objects: MOT Directory
7.6 Broadcasting Websites
7.6.1 Organization of Transmission
7.7 Overview of Messages: TopNews Carousel
7.7.1 Structure of the TopNews Applications
7.7.2 Parameters of the MOT TopNews Carousel
7.8 Electronic Program Guide EPG
7.8.1 Specification of the EPG System
7.8.2 Encoding and Transport of the Electronic Program Guide in the DAB System
7.9 WorldDAB Digital Radio Receiver Profiles
References
Chapter 8: Transmission of Services in the Cumulative DAB Network: Interface STI
8.1 Service Transport Interface (STI): The Logical Layer
8.1.1 Interface STI-C(LI)
8.1.2 Logical Layer of the Service Transport Interface: The Data Part, Interface STI-D(LI)
8.2 Adaptation Layer of the STI: The Control Part
8.3 The Transport Layer of the Interface
8.4 Physical Layer of the Interface STI
References
Chapter 9: Transmission of Multiplex Signal to Broadcasting Network: Interface ETI
9.1 Interface ETI(NI)
9.2 Interface ETI-NA
References
Chapter 10: Conditional Access Mechanisms in the DAB System
10.1 Applications of the Conditional Access System
10.2 Physical Implementation of the CA System
10.3 Conditional Access in the DAB System
10.4 Specification EUROCRYPT as a Variant of the CA System
References
Chapter 11: Development of the DAB System
References
Appendixes
Appendix A. Basic Parameters of the DAB+ System
Appendix B. Grouping of Convolutional Code in Channels FIC and MSC
Appendix C. Preliminaries on the Phasor Model of the Multipath OFDM Signal
Appendix D. Transport of the Conditional Access Parameters in the DAB System
Appendix E. DAB Carrier Frequencies in Blocks in the VHF Band III
Norms and Specifications
Index