• DocumentCode
    1421669
  • Title

    Optimal ASK and QAM with non-equal symbol probabilities on Rayleigh fading channels

  • Author

    Wei, Lan

  • Author_Institution
    Dept. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA
  • Volume
    47
  • Issue
    1
  • fYear
    2011
  • Firstpage
    63
  • Lastpage
    65
  • Abstract
    Formulas are derived to compute the optimal signal constellation, bit error probabilities, and decision thresholds for M-ASK and QAM with non-equal prior symbol probabilities on Rayleigh fading channels. It is shown that the optimal system can improve average Eb/N0 by 5 dB compared to a conventional system, i.e. a system with source coding, equiprobable symbols, and equal space constellation.
  • Keywords
    Rayleigh channels; amplitude shift keying; error statistics; probability; quadrature amplitude modulation; M-ASK; QAM; Rayleigh fading channels; amplitude shift keying; bit error probabilities; equal space constellation; equiprobable symbols; non-equal symbol probabilities; optimal signal constellation; quadrature amplitude modulation; source coding;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2010.7876
  • Filename
    5682207
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1421669