• DocumentCode
    353012
  • Title

    Blind channel estimation for CDMA systems: an induced cyclostationarity approach

  • Author

    Hachem, W. ; Desbouvries, F. ; Loubaton, Ph

  • Author_Institution
    Inst. Nat. des Telecommun., Evry, France
  • Volume
    5
  • fYear
    2000
  • fDate
    2000
  • Firstpage
    2477
  • Abstract
    The previously introduced transmitter induced cyclostationarity (TIC) techniques are applied to the CDMA uplink blind identification problem. In the proposed transmission model, the spreading code vectors are periodic, each user having a period of his own. As a consequence, a cyclic covariance function is associated to each user. This function generates a structured signal subspace which depends only on the transfer function of this user. The approach leads to clear and mild identifiability conditions. An identification algorithm is described and its theoretical asymptotic performance is presented. Simulations and comparisons with the existing stationary subspace techniques are provided. The algorithm is particularly adapted to systems where the number of users is close to the spreading factor
  • Keywords
    MIMO systems; code division multiple access; dispersive channels; identification; land mobile radio; multiuser channels; parameter estimation; radio links; radio transmitters; spread spectrum communication; statistical analysis; CDMA systems; CDMA uplink blind identification; DS-CDMA; asymptotic performance; asymptotic statistical analysis; blind channel estimation; cyclic covariance function; dispersive medium; identifiability conditions; identification algorithm; periodic spreading code vectors; simulations; spreading factor; stationary MIMO model; stationary subspace techniques; structured signal subspace; transfer function; transmission model; transmitter induced cyclostationarity; Blind equalizers; Channel estimation; Detection algorithms; Dispersion; Filters; Multiaccess communication; Signal generators; Statistics; Transfer functions; Transmitters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
  • Conference_Location
    Istanbul
  • ISSN
    1520-6149
  • Print_ISBN
    0-7803-6293-4
  • Type

    conf

  • DOI
    10.1109/ICASSP.2000.860938
  • Filename
    860938