Interfering users detection and interference cancellation in downlink CDMA

Conference: European Wireless 2005 - 11th European Wireless Conference 2005 - Next Generation wireless and Mobile Communications and Services
04/10/2006 - 04/13/2005 at Nicosia, Cyprus

Proceedings: European Wireless 2005

Pages: 7Language: englishTyp: PDF

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Benedetto, Sergio; Montorsi, Guido (CERCOM - Politecnico di Torino, Duca degli Abruzzi n.24, 10129 Torino, Italy)

The paper addresses the problem of identifying the active users in the downlink of a W-CDMA system and of using them in an interference canceller. A new simple algorithm is described for users’ identification that exploits the generating tree of Walsh-Hadamard sequences, and its effectiveness shown on the multiuser cancellation for the UMTS system downlink.