Title :
Maximum likelihood estimation of carrier offset in a variable bit rate orthogonal multicarrier CDMA
Author :
Guainazzo, Marco ; Gandetto, Matteo ; Sacchi, Claudio ; Regazzoni, Carlo S.
Author_Institution :
Dept. of Biophys. & Electron. Eng., Genoa Univ., Genova, Italy
Abstract :
A carrier offset correction scheme based on maximum likelihood (ML) method for the downlink of an orthogonal variable bit rate multicarrier-CDMA (MC-CDMA) scheme in a fast frequency selective Rayleigh fading channel is proposed and discussed. The proposed methodology assumes perfect knowledge of phase offset, whereas an equal gain combining (EGC) scheme is considered for MC-CDMA detection. Results in terms of minimum mean square error of the residual carrier frequency offset will be presented.
Keywords :
Rayleigh channels; code division multiple access; least mean squares methods; maximum likelihood estimation; equal gain combining; frequency selective Rayleigh fading channel; maximum likelihood estimation; minimum mean square error; phase offset; residual carrier frequency offset correction; variable bit rate orthogonal multicarrier CDMA; Bit rate; Diversity reception; Downlink; Fading; Frequency; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Multicarrier code division multiple access; Phase detection;
Conference_Titel :
Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the 3rd International Symposium on
Print_ISBN :
953-184-061-X
DOI :
10.1109/ISPA.2003.1296504
