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

fYear

2004

fDate

11-14 July 2004

Firstpage

492

Lastpage

496

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;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Print_ISBN

0-7803-8337-0

Type

conf

DOI

10.1109/SPAWC.2004.1439292

Filename

1439292