• DocumentCode
    1355306
  • Title

    On the fly gaussian elimination for LT codes

  • Author

    Bioglio, Valerio ; Grangetto, Marco ; Gaeta, Rossano ; Sereno, Matteo

  • Author_Institution
    Dipt. di Inf., Univ. di Torino, Torino, Italy
  • Volume
    13
  • Issue
    12
  • fYear
    2009
  • fDate
    12/1/2009 12:00:00 AM
  • Firstpage
    953
  • Lastpage
    955
  • Abstract
    We propose an improved algorithm for decoding LT codes using Gaussian elimination. Our algorithm performs useful processing at each coded packet arrival thus distributing the decoding work during all packets reception, obtaining a shorter actual decoding time. Furthermore, using a swap heuristic the decoding matrix is kept sparse, decreasing the cost of both triangularization and back-substitution steps.
  • Keywords
    Gaussian processes; codes; decoding; LT codes; back-substitution steps; coded packet arrival; decoding matrix; fly Gaussian elimination; packets reception; triangularization; Belief propagation; Costs; Equations; Iterative decoding; Robustness; Solitons; Sparse matrices; LT codes, Gaussian elimination decoding, incremental decoding;
  • fLanguage
    English
  • Journal_Title
    Communications Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1089-7798
  • Type

    jour

  • DOI
    10.1109/LCOMM.2009.12.091824
  • Filename
    5353274