LDM Versus FDM/TDM for Unequal Error Protection in Terrestrial Broadcasting Systems: An Information-Theoretic View

David Gomez-Barquero, Osvaldo Simeone

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

In this paper, power-based layer-division multiplexing (LDM) is studied as a means to provide unequal error protection in digital terrestrial television (DTT) systems by adopting an information-theoretic approach. LDM can potentially offer fundamental performance gains as compared to traditional time-division multiplexing (TDM) or frequency-division multiplexing due to the reuse by all information layers of all the available time-frequency resources. The main use case of LDM for terrestrial broadcasting is the simultaneous provision of fixed and mobile services in the same channel. Since most DTT networks worldwide are dimensioned for fixed rooftop reception, this paper illustrates the performance comparison between LDM and F/TDM in terms of the capacity-coverage tradeoff of the mobile service for a given reduction of the capacity of the fixed service while keeping the coverage of the fixed service constant. A mathematical formulation, and corresponding numerical results, are provided for different fading channels, including single-input single-output, single-input multiple-output, multiple-input single-output, and multiple-input multiple-output antenna systems, and accounting also for the impact of non-ideal channel coding.

Original languageEnglish (US)
Article number7182743
Pages (from-to)571-579
Number of pages9
JournalIEEE Transactions on Broadcasting
Volume61
Issue number4
DOIs
StatePublished - Dec 2015

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Electrical and Electronic Engineering

Keywords

  • ATSC 3.0
  • FDM
  • LDM
  • TDM
  • UEP
  • digital terrestrial broadcasting

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