Title :
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
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;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891954
