Multiuser space-time interference cancellation system for CDMA mobile communications

Author

Ishii, Naoto ; Yoshida, Shousei ; Ushirokawa, Akihisa

Author_Institution

NEC Corp., Kawasaki, Japan

Volume

3

fYear

1999

fDate

1999

Firstpage

1855

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th

Conference_Location

Amsterdam

ISSN

1090-3038

Print_ISBN

0-7803-5435-4

Type

conf

DOI

10.1109/VETECF.1999.801718

Filename

801718