ADVANCED WHITENER-RAKE RECEIVER FOR WCDMA TERMINAL

摘要

A CDMA receiver includes a receiver input for coupling to signal outputs of Nrx receive antennas, a matched filter and a whitening filter system for coupling the receiver input to an input of the matched filter. The whitening filter system contains NsNrx parallel filters receiving during each symbol internval NsNrx new signal samples via a signal connection matrix such that a first parallel filter receives only one of the new samples, a second parallel filter receives the same sample as the first, and one additional sample, and such that an nth parallel filter receives the same n-1 samples as the first n-1 filters, plus one of the remaining samples. The whitening filter system has Nrx outputs for outputting filtered signal samples such that a filtered signal sample appearing in the Nrx outputs does not correlate with any other filtered signal sample appearing in Nrx outputs.