Space/time multipath separation and equalization in asynchronous CDMA using the spatio-temporal array-receiver

We propose a spatio-temporal array-receiver for asynchronous CDMA using a new space/time structural approach. First, STAR performs blind identification and equalization of the propagation channel from each mobile transmitter. Second, it provides fast and accurate estimates of the number, relative magnitude and delay of the multipath components. From this space/time separation, we reconstruct the identified channel with respect to a partially revealed space/time structure and reduce identification errors by an order of the processing gain over the number of paths. Simulations confirm good multipath acquisition properties of STAR in the presence of strong interference and fast Doppler.