An interference estimation method for interference cancellation in CDMA systems

Author

Shikh-Bahaei, M.R. ; Aghvami, A.H.

Author_Institution

Centre for Telecomm. Res., King´´s Coll. London, UK

fYear

1997

fDate

35569

Firstpage

42461

Lastpage

42466

Abstract

In the presence of multiple access interference, the performance of multi-user systems can be enhanced by using interference estimation methods for interference cancellation. A method of interference estimation is proposed for which some statistical knowledge of interference is required by the estimator. Coefficients of the proposed estimator can be obtained by solving a set of linear equations. A model for the system is presented and its performance analysis is carried out by finding the expected value of the estimation error and the approximate expression for the probability of error. This is shown to offer a good complexity-performance compromise compared to other multi-user detectors

Keywords

code division multiple access; approximate expression; coefficients; complexity-performance compromise; error probability; estimation error; interference cancellation; interference estimation method; linear equations; multiple access interference; multiuser detectors; multiuser systems performance; performance analysis; statistical knowledge; synchronous direct sequence CDMA system; system model;

fLanguage

English

Publisher

iet

Conference_Titel

CDMA Techniques and Applications for Third Generation Mobile Systems (Digest No.: 1997/129), IEE Colloquium on

Conference_Location

London

Type

conf

DOI

10.1049/ic:19970706

Filename

640348