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Digital Audio Broadcastingrevised with the newest criteria and updates of all new developments

the hot electronic broadcast method family members is especially diverse from latest traditional broadcast structures. it really is standardised in numerous files (from ITU-R, ISO/IEC, ETSI, EBU, and others) that are usually tough to learn. This e-book bargains a complete and entirely up-to-date review of electronic Audio Broadcasting (DAB, DAB+) and electronic Multimedia Broadcasting (DMB), and comparable companies and purposes. in addition, the authors proceed to construct upon the subjects of the former versions, together with audio coding, information companies, receiver concepts, frequencies, and so on. There are a number of new sections within the publication, which might be in a different way tricky to find from a number of resources.

Key Features:

  • The contents were considerably up-to-date from the second one variation, together with up to date insurance of the most recent criteria
  • Contains a brand new bankruptcy on electronic Multimedia Broadcasting
  • “Must-have” guide for engineers, builders and different execs within the box

This publication may be of curiosity to making plans and method engineers, builders for pro and household apparatus brands, carrier prone, postgraduate scholars and teachers in communications know-how. Broadcasting engineers in comparable fields also will locate this publication insightful.Content:
Chapter 1 advent (pages 1–27):
Chapter 2 procedure notion (pages 29–92):
Chapter three Audio prone and functions (pages 93–165):
Chapter four facts providers and functions (pages 167–191):
Chapter five Provision of providers (pages 193–229):
Chapter 6 assortment and Distribution Networks (pages 231–262):
Chapter 7 the published aspect (pages 263–317):
Chapter eight The Receiving part (pages 319–361):
Chapter nine cellular tv and Multimedia (pages 363–381):

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Read or Download Digital Audio Broadcasting: Principles and Applications of DAB, DAB+ and DMB, Third Edition PDF

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Additional info for Digital Audio Broadcasting: Principles and Applications of DAB, DAB+ and DMB, Third Edition

Sample text

It is not suited for single frequency networks. The guard interval can be chosen to be 25% of the total symbol length, as for DAB, but also shorter guard intervals are possible. 6 MHz is suited for terrestrial 8 MHz TV channels. The system parameters can be scaled for 7 MHz TV channels. A major difference from the DAB system is that DVB-T uses coherent modulation. Different signal constellations between QPSK and 64-QAM are possible. At the receiving side, the channel amplitude and phase have to be estimated.

To reach the very low bit error rates that are required for the video codec, an outer Reed–Solomon (RS) code is applied: blocks of 188 bytes of useful data are coded into blocks of 204 bytes. Between the outer RS code and the inner convolutional code, a (relatively) short byte interleaver has been inserted to break up the burst errors that are produced by the Viterbi decoder. 20 Digital Audio Broadcasting The data rates that can be carried by the DVB-T multiplex vary from about 5 Mbps to about 30 Mbps, depending on the modulation (QPSK, 16-QAM or 64-QAM), the code rate (1/2, 2/3, 3/4, 5/6 or 7/8) and the guard interval.

5 Transmission Efficiency Compared to conventional broadcast systems much less economic effort in investment and operation is needed for a DAB transmission system. • Lower transmission costs for broadcasters: DAB allows broadcasters to provide a wide range of programme material simultaneously on the same frequency. This not only makes room for a vastly increased number of programmes to increase user choice, but also has important broadcast cost-cutting implications. • Lower transmission costs for transmitter network providers: For digital transmission a DAB transmitter needs only a fraction of the electrical energy compared to a conventional AM or FM transmitter.

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