• DocumentCode
    1174618
  • Title

    Demodulation of a Gosset lattice code having a spectral null at DC

  • Author

    Secord, N. ; De Buda, R.

  • Author_Institution
    Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
  • Volume
    35
  • Issue
    2
  • fYear
    1989
  • fDate
    3/1/1989 12:00:00 AM
  • Firstpage
    472
  • Lastpage
    477
  • Abstract
    A rarely used definition of the Gosset lattice is revived to construct codes which (unlike other Gosset lattice codes) have a null at DC in their baseband spectrum. A closed-form expression for the code spectrum is derived, and the bandpass spectrum of this code is compared to the spectrum of an E8 construction of the same code. A fast sequential method of demodulation is described. This two-stage demodulator consists of a simplified algorithm that can declare erasures to provide speed in demodulation and a maximum-likelihood algorithm used to maintain error performance
  • Keywords
    codes; decoding; demodulation; Gosset lattice code; bandpass spectrum; baseband spectrum; closed-form expression; code spectrum; demodulation; error performance; maximum-likelihood algorithm; sequential method; spectral null at DC; two-stage demodulator; Baseband; Demodulation; Digital filters; Feedback; Filtering; Gain; Lattices; Maximum likelihood decoding; Maximum likelihood estimation; Modulation coding;
  • fLanguage
    English
  • Journal_Title
    Information Theory, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9448
  • Type

    jour

  • DOI
    10.1109/18.32144
  • Filename
    32144
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1174618