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Combined MMSE equalization and blind parallel interference cancellation for downlink multirate CDMA communications

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4 Author(s)
Mouhouche, B. ; Dept. of TSI, ENST, Paris, France ; Abed-Meraim, K. ; Ibrahim, N. ; Loubaton, P.

We discuss linear equalization and intracell interference cancellation (IIC) in the downlink of wideband code division multiple access (W-CDMA) systems. A new reception scheme suitable for multirate systems (with different spreading codes) is proposed. The only knowledge supposed is the one available at the mobile unit. The effective spreading codes are detected blindly using fast walsh transform (FWT). The received signal is equalized then passed through an IIC stage to obtain better estimates of the transmitted symbols. We compare our scheme with equalization and IIC alone, and discuss practical issues when implementing this receiver.

Published in:

Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on

Date of Conference:

11-14 July 2004