Title :
Spatio-temporal array-receiver for multipath tracking in cellular CDMA
Author :
Affes, Sofiène ; Mermelstein, Paul
Author_Institution :
INRS-Telecommun., Quebec Univ., Montreal, Que., Canada
Abstract :
Efficient multipath tracking is a crucial requirement for high performance in asynchronous cellular CDMA. Despite the recent increased focus on use of array receivers at the base stations, the problem of time-delay estimation for individual paths has not been specifically addressed. In this contribution we propose simple and fast multipath tracking procedures in a nonstationary CDMA environment, using the spatio-temporal array-receiver (STAR). Both the time-delays and their number are tracked in time in a partially blind scheme with a low order of computational complexity. We show by simulations the tracking capability of STAR at a high interference level
Keywords :
array signal processing; cellular radio; code division multiple access; computational complexity; land mobile radio; multipath channels; radio receivers; radiofrequency interference; tracking; STAR; asynchronous cellular CDMA; cellular radio; computational complexity; high interference level; multipath tracking; nonstationary environment; partially blind scheme; simulation; spatio-temporal array-receiver; time-delay estimation; Base stations; Blind equalizers; Business; Fading; Interference; Multiaccess communication; Multipath channels; Testing; Timing; Tracking loops;
Conference_Titel :
Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3925-8
DOI :
10.1109/ICC.1997.595007
