An Enhanced SMLR algorithm for multipath channel estimation in downlink WCDMA

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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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.