Logical Channels: Layered Description of Transport in the DAB+ System



The digital radio DAB is designed to transmit potentially multimedia content. Its specification defines both the organization of transmission subchannels, where programs are transmitted, and identifying the content of these programs.

The DAB transmitter can broadcast a number of radio programs with accompanying data and independent multimedia services. This requires a new approach to signal organization. To construct a multiplex of DAB radio programs, the following are necessary:
  • Information about the organization of the multiplex signal subchannels

  • Identification of programs and data within the multiplex

  • Identification of individual components of independent multimedia

DAB multiplex signal is composed of various radio programs and data. Each program can be built with different components of the sound or services. The individual elements of the multiplex program require unambiguous identification. It is necessary to indicate in which subchannel, in which mode, and what types of items of the program are broadcast. So, there is necessary information about the structure, divisions, and relations in subchannels of the DAB broadcast channels.


DAB channels main service channel Fast information channel PAD channel Subchannels Hierarchy of subchannels Transport organization Data groups Service identifiers Data identifiers Program types Labels Multiplex channel information Start algorithm Optional multiplex parameters Announcements Alarm signals Linking information Frequency information 


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    ETSI EN 300 401 “Radio broadcast systems: Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers”Google Scholar
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    ETSI TS 103 176 “Digital Audio Broadcasting (DAB); Rules of implementation; Service information features”Google Scholar
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    CENELEC EN 62106, “Specification of the radio data system (RDS) for VHF/FM sound broadcasting in the frequency range from 87,5 to 108,0 MHz”Google Scholar
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    ETSI TS 102 980 “Digital Audio Broadcasting (DAB); Dynamic Label Plus (DL Plus); Application specification”Google Scholar
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    ‘Digital Radio Receiver Profiles’, World DMB Forum, December 2008Google Scholar
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    ETSI TR 101 496–1 “Digital Audio Broadcasting (DAB); Guides and rules for implementation and operation; Part 1: System outline”Google Scholar
  7. 7.
    ETSI TR 101 496–2 “Digital Audio Broadcasting (DAB); Guides and rules for implementation and operation; Part 2: System features”Google Scholar

Copyright information

© The Author(s), under exclusive license to Springer Nature Switzerland AG 2022

Authors and Affiliations

  1. 1.National Institute of TelecommunicationsWroclawPoland

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