An Enhanced SMLR algorithm for multipath channel estimation in downlink WCDMA

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Fathi, Lahouari; Arndt, Marylin (France Telecom R&D, 28 chemin du Vieux Chêne, BP. 98, 38243 Meylan, France)
Fathi, Lahouari; Jourdain, Geneviève (LIS-INPG, 961 Rue de la Houille Blanche, BP. 46, 38402 Saint Martin d'Hères, France)

In this paper, a new algorithm for multipath channel estimation by means of the Common Pilot Channel (CPICH) in downlink WCDMA-FDD is presented. The estimation is performed by using a Single Most Likely Replacement (SMLR) algorithm specifically derived for complex baseband signals where a Bernoulli-Gaussian (BG) model is introduced for the multipath channel. In the proposed algorithm, an interference cancelling technique is associated to the SMLR to enhance its performance. The proposed algorithm performs very well; it yields a satisfactory performance at a moderate extra computational cost compared to the SMLR.