Title :
Multiuser space-time interference cancellation system for CDMA mobile communications
Author :
Ishii, Naoto ; Yoshida, Shousei ; Ushirokawa, Akihisa
Author_Institution :
NEC Corp., Kawasaki, Japan
Abstract :
An efficient combination of a smart antenna and a multi-stage multiuser interference canceller is proposed for W-CDMA system enhancement. In the proposed advanced receiver, interference cancellation is carried out at the signal level before beamforming by regenerating a spread signal replica of each user signal with the inverse beamforming process. Computer simulation demonstrates that the proposed space-time processing enables one to achieve a joint capacity gain given by the smart antenna and multiuser detection
Keywords :
adaptive antenna arrays; array signal processing; broadband networks; code division multiple access; interference suppression; land mobile radio; multiuser channels; radio networks; radio receivers; radiofrequency interference; signal detection; space-time adaptive processing; CDMA mobile communications; W-CDMA system; beamforming; computer simulation; interference cancellation; inverse beamforming; joint capacity gain; multi-stage multiuser interference canceller; multiuser detection; multiuser space-time interference cancellation system; receiver; signal level; smart antenna; space-time processing; spread signal; user signal; Adaptive arrays; Antenna arrays; Array signal processing; Direction of arrival estimation; Interference cancellation; Laboratories; Mobile communication; Multiaccess communication; National electric code; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.801718
