Browsing by Subject "Maximum likelihood"

Now showing items 1-2 of 2

  • Iterative channel estimation techniques for uplink MC-CDMA systems 

    Authors:Dogan, Hakan; Panayirci, Erdal; Cirpan, Hakan Ali
    Publisher and Date:(IEEE, 2007)
    In this work maximum likelihood (ML) channel estimation for uplink multicarrier code-division multiple-access (MC-CDMA) systems is considered in the presence of frequency fading channel. The expectation-maximization (EM)- and a space-alternating generalized expectation-maximization (SAGE) algorithm are introduced to avoid matrix inversion for the ML channel estimation problem. We compare the both algorithms in terms of the number of used iteration and show that the proposed algorithms converge the ...

  • Iterative channel estimation techniques for uplink MC-CDMA systems 

    Authors:Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali
    Publisher and Date:(IEEE, 2007)
    In this work maximum likelihood (ML) channel estimation for uplink multicarrier code-division multiple-access (MC-CDMA) systems is considered in the presence of frequency fading channel. The expectation-maximization (EM)- and a space-alternating generalized expectation-maximization (SAGE) algorithm are introduced to avoid matrix inversion for the ML channel estimation problem. We compare the both algorithms in terms of the number of used iteration and show that the proposed algorithms converge the ...