Spatio-temporal array-receiver for multipath tracking in cellular CDMA
Sofiène Affes, Paul G. Mermelstein · 2002
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.