Digital Terrestrial Television Broadcasting

In the past decades, traditional television broadcasting has been an autonomous field which was largely independent of the world of telecommunications and computers. The analog television standards PAL, SECAM and NTSC have remained almost untouched with regard to their picture information. Whatever development took place was essentially in support of programming and was based on the existence of a certain redundancy in the representation of the signal in the time and fre quency domain. In the 70S, for example, the teletext system was introduced throughout Europe. A further supplementary digital service in television, intro duced in the early 80S, was the Video Programme System (VPS) which utilizes part of the TV data line and ensures that programmes can be recorded with the correct timing on video recorders even when the programmes are delayed. There is no doubt that as far as the transmission from the studio to the view er is concerned, the future belongs to digital video broadcasting (DVB) which is about to be implemented in the satellite, cable and terrestrial radio transmission media. The European DVB Project finalized its specification for channel coding and modulation for the digital broadband transmission channels at the begin ning of 1996.

Book gives an application-oriented overview of the technolo- gy of DVB-T, which is a hot topic at present. The author is an experienced industrial expert. Target groups are engineers in modern information and communication technology.

Texte du rabat

This practical reference book is concerned mainly with the technology of digital terrestrial television broadcasting. The author describes the latest developments in digital television, the status of analog technology, and the basics of digital technology and its specifications. The operating and measurement procedure is given especially extensive treatment. Technical future scenarios are also discussed. The book thus gives a self-contained account of this topical theme which will be useful for trainee engineers as well as media experts and broadcasting professionals.

Contenu
1 History of the Development of Digital Transmission Techniques in TV Broadcasting.- 1.1 Growth in the Proportion of Digital Signal Transmission in Television Engineering.- 1.2 Beginnings of Digital HDTV in the United States.- 1.3 Research Projects and Pilot Developments in Europe.- 1.4 Specification by the European DVB Project.- 2 Present State of the Terrestrial Television Broadcasting Service.- 2.1 Programme Feeds to the Transmitting Stations.- 2.2 Signal Transmission Technology.- 2.3 Television Transmitter Engineering.- 2.4 Basic Measuring and Monitoring Methods.- 2.5 Planning of Coverage.- 3 Basic Principles of Digital Television Transmission.- 3.1 Video Coding.- 3.2 Audio Coding.- 3.3 MPEG-2 Transport Stream.- 3.4 Channel Coding and OFDM Methods.- 3.5 Single-Frequency Network.- 4 Basic Parameters of the Specification for the Digital Terrestrial TV transmission.- 4.1 Channel Coding.- 4.2 Quadrature Amplitude Modulation.- 4.3 Basic Changes Compared with the Present Broadcasting Service.- 5 Programme Feeds to the Digital Terrestrial Transmitting Stations.- 5.1 MPEG-2 Signal Feed.- 5.2 Programme Feed Alternatives.- 5.3 Pragmatic Approaches to an Implementation.- 6 Technology of Terrestrial DVB Transmitters.- 6.1 Design for the Development of the OFDM Modulator.- 6.2 Dimensioning Parameters for the Hierarchical Transmission.- 6.3 Correction of Tube and Transistor Power Amplifiers for OFDM Signals.- 6.4 Combined TV Transmitters for DVB and PAL Signals.- 7 Test Methods for the Digital Terrestrial Television Transmitter.- 7.1 Generating OFDM Signals.- 7.2 Measurement Parameters for the Optimization and Acceptance of DVB Transmitters.- 8 Synchronization of the DVB Transmitters in a Single-Frequency Network.- 8.1 Global Positioning System GPS.- 8.2 Frequency Synchronizationof the Carrier.- 8.3 Time Synchronization for Bit-Synchronous Transmission.- 9 Techniques of Measuring the Coverage of Digital Terrestrial Television Networks.- 9.1 Detection and Analysis of the Field Strength.- 9.2 Measuring the Channel Impulse Response and the Raw Bit Error Rate.- 10 Outlook.- 10.1 Development of the of Satellite and Cable Media.- 10.2 Realization of the Potentials of Digital Television Broadcasting.- 10.3 Change in the Channel Frequency Structure.- 10.4 In-Service Monitoring of Transmitter Networks.- 10.5 A Long-Term Scenario for Digital Terrestrial Television.- 11 Summary.- 12 List of References and Sources.- 13 List of Abbreviations and Formula Symbols.- 14 Index.