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Physical Layer of the DAB+ System

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Abstract

The role of individual subsystems of DAB transmitter is best illustrated by an example of a single local transmitter, where all elements are concentrated in one place.

The main DAB subsystems are related with the main service channel:
  • The sound track with possible accompanying information in the subchannel PAD (Program Associated Data)

  • The track of independent services in packet mode

  • The track of independent services in stream ONTAIN mode C

and contain independently subsystems ensuring reliable DAB transmission:
  • Conditional access subsystem (CA)

  • Energy dispersal subsystem (ED)

  • Convolutional encoder (in receiver: Viterbi decoder)

  • time interleaver of the frames of encoder

The next discussed subsystem is a multiplexer, an OFDM channel modulator, and the transmitter output circuits.

The functional operations of the basic blocks in the receiver are presented in a similar way.

Keywords

Block diagram of transmitter Sound track Data track Logical frames Audio encoder Mono signal Stereo signal Compact stereo signal MUSICAL Surround PAD CRC codes Viterbi decoder Time in-terleaving Multiplexer PAPR Physical frames DAB receiver 

References

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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 103 466 “Digital Audio Broadcasting (DAB); DAB audio coding (MPEG LAYER II)”Google Scholar
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    ISO/IEC 11172–3. "Coding of Moving pictures and associated audio for digital storage media at up to 1.5 Mbit/s - Audio Part". International Standard, 1993Google Scholar
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    ISO/IEC 13 818–3. "Information Technology: Generic coding of Moving pictures and associated audio - Audio Part". International StandardGoogle Scholar
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    ETSI TS 102 563” Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding (AAC) audio”Google Scholar
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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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