A linear CDMA detector based on minimum variance distortionless response (MVDR)

Author

Zheng, F.-C.

Author_Institution

Sch. of Commun. & Inf., Victoria Univ. of Technol., Melbourne, Vic., Australia

Volume

1

fYear

2000

fDate

2000

Firstpage

566

Abstract

A bit-level processing (BLP) based linear CDMA detector is derived following the principle of minimum variance distortionless response (MVDR). The combining taps for the MVDR detector are determined from (1) the covariance matrix of the matched filter output, and (2) the corresponding row (or column) of the user correlation matrix. Due to the interference suppression capability of MVDR and the fact that no inversion of the user correlation matrix is involved, the influence of the synchronisation errors is greatly reduced. The detector performance is demonstrated via computer simulations (both synchronisation errors and intercell interference are considered)

Keywords

cellular radio; code division multiple access; covariance matrices; filtering theory; interference suppression; matched filters; multiuser channels; radiofrequency interference; signal detection; synchronisation; MVDR detector; bit-level processing; combining taps; computer simulations; covariance matrix; detector performance; intercell interference; interference suppression; linear CDMA detector; matched filter output; minimum variance distortionless response; synchronisation errors; user correlation matrix; Computer errors; Convergence; Covariance matrix; Decorrelation; Detectors; Informatics; Interference suppression; Matched filters; Multiaccess communication; Multiple access interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851521

Filename

851521