Title :
Combined MMSE equalization and blind parallel interference cancellation for downlink multirate CDMA communications
Author :
Mouhouche, Belkacem ; Abed-Meraim, Karim ; Ibrahim, Nicolas ; Loubaton, Philippe
Author_Institution :
Dept. of TSI, ENST, Paris, France
Abstract :
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.
Keywords :
blind equalisers; code division multiple access; interference suppression; least mean squares methods; radio links; FWT; IIC; MMSE equalization; W-CDMA system; blind parallel interference cancellation; downlink multirate CDMA communication; fast walsh transform; intracell interference cancellation; linear equalization; spreading code; wideband code division multiple access; 3G mobile communication; Blind equalizers; Downlink; Fading; Interference cancellation; Multiaccess communication; Multipath channels; Multiuser detection; Signal restoration; Wideband;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on
Print_ISBN :
0-7803-8337-0
DOI :
10.1109/SPAWC.2004.1439292
