Design and evaluation of a multilevel decoder for satellite communications

  • Authors:

  • Aharon Vargas;Marco Breiling;Wolfgang H. Gerstacker

  • Affiliations:

  • Fraunhofer Institute for Integrated Circuits, Erlangen, Germany;Fraunhofer Institute for Integrated Circuits, Erlangen, Germany;Institute for Mobile Communications, University of Erlangen-Nuremberg, Erlangen, Germany

  • Venue:
  • ICC'09 Proceedings of the 2009 IEEE international conference on Communications
  • Year:
  • 2009

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Abstract

In this paper, we propose a multilevel coding (MLC) scheme suitable for satellite communications, where different QoS levels are required. We introduce a novel characterization of schemes based on mutual information, called multi-stage decoder (MSD) charts, to aid in the design and evaluation of multilevel coding systems. This characterization method finds the optimal set of code rates for the MLC scheme for a set of required SNR operation points. On the other hand, fixing the code rates to find out the operation points of SNR is also possible. Performance of common mapping strategies used in MLC schemes, as block labeling and Ungerböck labeling, are evaluated using MSD charts. An established transmission scheme for satellite broadcasting, European Satellite Digital Radio (ESDR) standard, is compared with the proposed MLC scheme, showing that the MLC scheme is able to work in lower SNR regions and provides more flexibility in designing the levels.