Performance analysis of a reduced rank MMSE MUD for DS-CDMA

Author

Sud, Seema ; Myrick, Wilbur L. ; Goldstein, J.Scott ; Zoltowski, Michael D.

Author_Institution

Sci. Applications Int. Corp., Arlington, VA, USA

Volume

5

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

3158

Abstract

A new reduced rank multiuser detector (MUD) for DS-CDMA is presented. The algorithm is derived for the general case of an asynchronous DS-CDMA system in frequency selective multipath. The MUD solution is shown to be equivalent to a bank of parallel, single user detectors. The algorithm is implemented in reduced rank form using the correlations subtractive algorithm of the multistage Wiener filter (CSA-MWF). It is shown that the CSA-MWF implementation performs identically to the full rank solutions of MMSE MUD and meets single user, full rank performance at a substantially reduced rank for all levels of system load

Keywords

Wiener filters; code division multiple access; least mean squares methods; mobile radio; multiuser channels; spread spectrum communication; time-varying channels; CSA-MWF; MMSE; MUD; asynchronous DS-CDMA system; correlations subtractive algorithm; frequency selective multipath channel; multistage Wiener filter; performance analysis; reduced rank multiuser detector; Application software; Bandwidth; Detectors; Frequency; Intersymbol interference; Multiaccess communication; Multiuser detection; Performance analysis; Signal detection; Wiener filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE

Print_ISBN

0-7803-7206-9

Type

conf

DOI

10.1109/GLOCOM.2001.966009

Filename

966009