Patent ID: 6445692
Filing Date: 2002-09-03
Classification: H04B

Abstract:
An adaptive code-division multiple-access (CDMA) receiver for a CDMA communication system comprising:digital filter means in a receiver for suppressing multiuser and multi-path interference, said filter being programmed in accordance with the following algorithm: f(n):f(n+1)=[Iâˆ’C(CHC)âˆ’1CH][f(n)âˆ’mfy(n)yH(n)f(n)]+C(CHC)âˆ’1g(n) â€ƒwherein y(n) is a data vector for each transmitted bit, W1(n) from user 1; means in said receiver for estimating y(n), by filtering y(n), i.e. w1(n)=fH(n)y(h), where H denotes Hermitian; g(n) corresponds to the multipath parameters updated by a separate revision; and C is a matrix constructed from elements of the desired user's spreading code.