Contents
Foreword xi
Preface xiii
List of contributors xvii
Abbreviations xxiii
1 Introduction 1
1.1 General 1
1.2 Radio in the Digital Age 2
1.3 Benefits of the Eureka 147 DAB System 2
(Quality of service; Value added services; Universal system
layout; Flexible multiplex configuration; Transmission efficiency)
1.4 History of the Origins of DAB 5
(Development, Organisations and platforms such as Eureka 147;
WorldDAB; Milestones of introduction)
1.5 International Standardisation 12
(System; Audio coding; Data services; Network and transmission;
Receiver; Guidelines for implementation; ETSI; IEC;
ITU-R; CENELEC; CEPT; EBU)
1.6 Relations to Other Digital Broadcasting Systems 14
(Satellite based systems Astra, Worldspace; Terrestrial
Systems such as DRM, Digital television DVB-T,
Digital radio in US and Japan; Web-casting)
2 System Concept 27
2.1 The Physical Channel 27
(Multipath propagation; Doppler shifted carriers)
2.2 The DAB Transmission System 30
(Multicarrier modulation; Frame structure of DAB;
Channel coding; Interleaving and PSK mapping; Time interleaving
and overall delay; DQPSK modulation and frequency interleaving;
Performance considerations)
2.3 The DAB Multiplex 40
(Description of the multiplex; Main service channel;
Transport mechanism; FIC; Transmission frames; Logical
structure; Multiplex reconfiguration)
2.4 Conditional Access 48
(Scrambling/descrambling; Checking/management of entitlements)
2.5 Service Information 50
(Basic information; Service-related information;
Programme-related information; Announcements;
Numerous examples; Tuning aids)
3 Audio Services and Applications 75
3.1 General 75
(MPEG Audio coding vs. 16 bit PCM)
3.2 Audio Coding 76
(Basic principles; Masking; Psycho-acoustic model;
Filterbank; Bit allocation; Quantisation; Layer II
audio bitstream; Audio decoding)
3.3 Characteristics and Features of MPEG-1 Layer II for DAB 84
(Audio modes; Sampling rate; Audio frame structure;
Audio bit rates; Layer II vs. SBR coding technologies)
3.4 Programme-associated Data 87
(Dynamic Range Control DRC; Music/Speech Control;
Receiving end)
3.5 Advanced Audio Applications Using MPEG-2 Features 91
(Multichannel audio coding; Half–sampling–rate coding;
Multilingual services; Audio broadcasting for Hearing impaired)
3.6 Quality of Service 102
(Audio quality; Subjective assessment; Objective
assessment – PEAQ)
3.7 Error Protection and Concealment 111
(Error protection; Concealment measures; Assessment
of error performance)
3.8 A Typical DAB Ensemble 120
vi Contents
3.9 Audio Levels 121
(Audio signal level alignment; Programme loudness)
4 Data Services and Applications 127
4.1 General 127
(Introductory information)
4.2 Data Service Signalling 127
(General considerations)
4.3 Multimedia Applications with MOT 128
(Multimedia Object Transfer Protocol MOT;
MOT object transport)
4.4 Standardised MOT User Application 133
(MOT slide show; Broadcast web site; Interactive services)
4.5 ‘‘Mobil-Info’’ as an Example of a Proprietary MOT
User Application 137
(Presentation of video clips, news and graphic
animation in a tram)
4.6 Textual PAD Services 139
(Dynamic label; Other textual PAD services)
4.7 Traffic Information Services and Navigation Aids 140
(Traffic massage channel TMC; TPEG; Differential GPS)
4.8 Moving Picture Services 143
(Digtal multimedia broadcast DMB; Motion PAD)
4.9 Other Data Transmission Mechanism 145
(Transparent data channel; IP tunnelling)
5 Provision of Services 151
5.1 The DAB Service Landscape 151
(Structure of DAB service organisation; Main services;
Data services)
5.2 Use of Existing Infrastructures 157
(Broadcasting operation systems; Editorial systems)
5.3 Need for New Infrastructure 159
(Data management; Multimedia editorial tools; Data inserter)
5.4 Relationship between DAB Data Services and RDS 166
(DAB SId vs. RDS PI code; PTy codes; DAB
Announcements vs. RDS TA; DAB Dynamic label vs.
Radiotext; Crossrefering DAB services from RDS)
Contents vii
5.5 Electronic Programme Guide (EPG) for DAB 176
(Development; Data formatting; Transportation and compressing;
Data management; Launch of EPG; User interface)
5.6 Possible New Audio Services 183
(Dynamic reconfiguration; Secondary services;
Announcement channels for ‘‘Near Radio on Demand’’;
Announcement switching; Mailbox radio)
6 Collection and Distribution Networks 187
6.1 General 187
(Requirements; Ensemble multiplexer;
Broadcast network; Implementation)
6.2 The Collection Network 193
(Service Transport Interface STI; Network architecture;
Operation; STI implementation levels; Integration of
non-STI service providers; Advanced features)
6.3 The Distribution Network 208
(Ensemble Transport Interface ETI; Network
architecture; Operation)
6.4 Example of Implementation 212
(Operational scenario; Service provider profile;
Equipment; Experience)
7 The Broadcast Side 221
7.1 General 221
(Scope and structure of the chapter)
7.2 Radio Frequency Propagation Aspects 221
(The impaired RF channel; Propagation models;
Propagation model for DAB; Building penetration losses)
7.3 Introduction to DAB Networks 231
(FM vs. DAB Networks; SFNs with DAB;
Advantages of SFNs)
7.4 Particularities of Single frequency networks (SFN) 235
(COFDM principles; Time and frequency synchronisation;
Coverage of SFNs; Gap fillers; TII features)
7.5 DAB Transmitters 241
(Signal processing of a COFDM modulator;
D/A conversion; RF upconversion; Amplification and filtering)
viii Contents
7.6 Coverage Planning 246
(Field strength, interference and delay considerations;
Detailed planning; Examples of SFNs in Band III and L-band)
7.7 Coverage Evaluation and Monitoring of SFNs 255
(Parameters; BER measurements; Timing adjustment
and monitoring of SFNs)
7.8 Frequency Management 260
(General aspects; Allocation of frequencies)
8 The Receiving Side 265
8.1 General 265
(Normative receiver requirements; Receiver architecture overview)
8.2 RF Front-end 268
(Requirements; Analogue front end architecture; Future developments)
8.3 Digital Baseband Processing 276
(Digital front-end; OFDM demodulation; DPQSK
demodulation; Deinterleaving; Viterbi decoding; Synchronisation)
8.4 Audio Decoder 281
(Decoder architecture; Normative requirements)
8.5 Interfaces 283
(Data interfaces; Control interfaces)
8.6 Integrated Circuits for DAB 284
(Jessi DAB chip sets; D-Fire chip-set)
8.7 Receiver Overview 293
(Car radios; Home tuners; PC based receivers;
Portable receivers; Reference receivers)
8.8 Operating a DAB Receiver – the Human–Machine Interface 294
(Requirements; Programme type PTy; Announcements;
Frequency and service following; DAB receivers for new
types of services)
Appendices 299
Appendix 1: DAB Parameters for Modes I, II, III and IV 299
(Physical system parameters and relations)
Appendix 2: Digital Radio (DAB): Status of Introduction World-wide 301
(DAB implementations in Europe, Africa,
America, Asia and Australia)
Contents ix
Appendix 3: Frequencies for Terrestrial and
Satellite DAB Transmission 305
(CEPT frequency tables for Europe, Canada and Australia)
Bibliography 309
Standards and Related Documents 309
Publications 313
Further Reading 320
Internet Link |
/1 
eetop公众号
创芯大讲堂
创芯人才网
发表于 2006-10-29 13:59:29
