• DocumentCode
    181523
  • Title

    Spectral shape of non-binary LDPC code ensembles with separated variable nodes

  • Author

    Garrammone, G. ; Paolini, E. ; Chiani, M.

  • Author_Institution
    Inst. of Commun. & Navig., Deutsches Zentrum fur Luft- und Raumfahrt (DLR), Wessling, Germany
  • fYear
    2014
  • fDate
    26-29 Oct. 2014
  • Firstpage
    1
  • Lastpage
    5
  • Abstract
    The non-binary weight distribution and its spectral shape is developed for a partially-structured ensemble of low-density parity-check codes over finite fields. The ensemble is characterized by all degree-2 variable nodes and some of the degree-3 variable nodes being separated. It is shown that, under node separation, the typical minimum distance is strictly positive and significantly higher than the one of the corresponding unstructured ensemble.
  • Keywords
    parity check codes; degree-2 variable nodes; degree-3 variable nodes; low-density parity-check codes; nonbinary LDPC code ensembles; nonbinary weight distribution; variable node separation; Australia; Equations; Iterative decoding; Maximum likelihood decoding; Sockets; Spectral shape;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Information Theory and its Applications (ISITA), 2014 International Symposium on
  • Conference_Location
    Melbourne, VIC
  • Type

    conf

  • Filename
    6979791
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=181523