Usage of smart antenna for cancelling neighboring base-station interferences in wireless CDMA communications

Document Type

Conference Proceeding

Publication Date

1-1-1998

Abstract

The capacity of wireless CDMA systems in the forward link is limited by both intra-cell and inter-cell cochannel interferences. In particular, when the mobile is close to a cell boundary, the desired signal from home base station (BS) is disturbed by relatively strong interference from neighboring BSs. In this paper, a receiver architecture is suggested at mobile to utilize a small two-antenna array for interference cancellation. Such a canceller works well only when the channel vector of desired signal is known. We use the identifying spreading codes (as in IS-95 for example) to provide an adaptive channel vector estimate, and control the beam steering weight, hence improve the system capacity.

Identifier

0031652376 (Scopus)

Publication Title

Conference Record of the Asilomar Conference on Signals Systems and Computers

ISSN

10586393

First Page

640

Last Page

644

Volume

1

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