A robust space-time multi-user receiver for asynchronous DS-CDMA

Author

Beck, C. ; Manikas, A.

Author_Institution

Commun. & Signal Process. Res. Group, Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

3

fYear

2000

fDate

2000

Firstpage

1849

Abstract

An integrated space-time multi-user array receiver for asynchronous direct sequence code division multiple access (DS-CDMA) is proposed that is robust to errors in the estimation of multipath arrival times. The method presented here is valid for more than one path per user and is also near-far resistant in the presence of such timing uncertainty. This is unlike the decorrelating and minimum mean square error (MMSE) detectors that are only near-far resistant in the absence of timing errors

Keywords

antenna arrays; array signal processing; code division multiple access; filtering theory; interference suppression; least mean squares methods; matched filters; multipath channels; multiuser channels; radio receivers; radiofrequency interference; receiving antennas; spread spectrum communication; MMSE detectors; asynchronous DS-CDMA; direct sequence code division multiple access; integrated array receiver; matched filter receiver; maximal ratio combining; minimum mean square error; multipath arrival time estimation; multiple access interference cancellation; near-far resistant method; robust space-time multi-user receiver; timing errors; timing uncertainty; Array signal processing; Baseband; Decorrelation; Detectors; Immune system; Mean square error methods; Multiaccess communication; Robustness; Timing; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-6451-1

Type

conf

DOI

10.1109/GLOCOM.2000.891954

Filename

891954