Patent ID: 6947403

Claim:
A code division, multiple access (CDMA) receiver, comprising a receiver input for coupling to signal outputs of N rx receive antennas, the signal outputs being sampled at N s samples per symbol or chip, a matched filter, and a whitening filter system for coupling the receiver input to an input of the matched filter, said whitening filter system comprising N s N rx parallel individual whitening filters w j,k , individual whitening filters w j,k receiving, during each symbol interval I, N s N rx new signal samples via a signal connection matrix such that a first individual whitening filter receives one of the new samples, a second individual whitening filter receives the same new sample as the first individual whitening filter, and one additional new sample, and such that an nth individual whitening filter receives the same n−1 new samples as the first n−1 individual whitening filters, plus one additional new sample, said whitening filter system comprising N rx outputs for outputting filtered signal samples such that a filtered signal sample appearing in the N rx outputs does not correlate with any other filtered signal sample appearing in N rx outputs.