• DocumentCode
    989087
  • Title

    Chase Decoding of Linear Z4 Codes at Low to Moderate Rates

  • Author

    Armand, Marc A. ; Halim, A. ; Nallanathan, A.

  • Author_Institution
    Nat. Univ. of Singapore, Singapore
  • Volume
    11
  • Issue
    10
  • fYear
    2007
  • fDate
    10/1/2007 12:00:00 AM
  • Firstpage
    811
  • Lastpage
    813
  • Abstract
    A free Z4 code C may be decoded by decoding its canonical image C macr over Z2 twice in succession. Hence, a Chase decoder for C could employ as its hard-decision (HD) decoder, a two-stage decoder which performs HD decoding on C macr in each stage. Alternatively, one could have a two-stage soft-decision decoder by employing a Chase decoder for C macr in each stage. We demonstrate that the latter approach can offer a significant reduction in complexity over the other, with little or no price to pay in terms of word error rate performance, particularly at low to moderate code rates.
  • Keywords
    decoding; linear codes; Chase decoding; hard-decision decoding; linear Z4 codes; soft-decision decoding; AWGN channels; Charge coupled devices; Codes; Error analysis; Hamming distance; High definition video; Maximum likelihood decoding; Modulation coding; Quadrature phase shift keying; Testing;
  • fLanguage
    English
  • Journal_Title
    Communications Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1089-7798
  • Type

    jour

  • DOI
    10.1109/LCOMM.2007.070821
  • Filename
    4389795
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=989087