Title :
Turbo Blind and Semi-blind Intracell Interference Cancellation for MIMO Downlink CDMA
Author :
Visoz, Raphael ; Berthet, Antoine O. ; Gresset, Nicolas
Author_Institution :
France Telecom Res. & Dev., Issy-les-Moulineaux
Abstract :
This paper deals with iterative linear equalization and intracell interference cancellation (IIC) in the downlink of MIMO wideband code division multiple access (WCDMA) systems. A new reception scheme suitable for monorate, i.e., all users have the same spreading factor, overloaded MIMO systems is proposed based on the partial knowledge of intracell interfering signals, namely, their active spreading codes and modulation. We call this scenario semi-blind IIC. We compare our scheme with iterative equalization without UC for a 4times4 MIMO channel with a load equal to 125%
Keywords :
MIMO communication; code division multiple access; codes; equalisers; interference suppression; iterative methods; modulation; radio links; radiofrequency interference; MIMO channel; MIMO downlink CDMA; MIMO wideband code division multiple access; active spreading codes; intracell interfering signals; iterative linear equalization; modulation; reception scheme; semi-blind intracell interference cancellation; spreading factor; turbo blind; Broadband antennas; Downlink; Interference cancellation; Iterative decoding; MIMO; Modulation coding; Multiaccess communication; Multiuser detection; Receiving antennas; Transmitting antennas;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-9710-X
Electronic_ISBN :
0-7803-9711-8
DOI :
10.1109/SPAWC.2006.346390
