Nonlinear distributed source-channel coding over orthogonal additive white Gaussian noise channels

  • Authors:

  • Niklas Wernersson;Mikael Skoglund

  • Affiliations:

  • School of Electrical Engineering and the ACCESS Linnaeus Center, Royal Institute of Technology (KTH), Stockholm, Sweden;School of Electrical Engineering and the ACCESS Linnaeus Center, Royal Institute of Technology (KTH), Stockholm, Sweden

  • Venue:
  • ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
  • Year:
  • 2009

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Abstract

The problem of designing simple and energy-efficient nonlinear distributed source-channel codes is considered. By demonstrating similarities between this problem and the problem of bandwidth expansion, a structure for source-channel codes is presented and analyzed. Based on this analysis an understanding about desirable properties for such a system is gained and used to produce an explicit source-channel code which is then analyzed and simulated. It is shown that the code has a substantial gain compared to a linear source-channel code.