Patent ID: 7221722
Filing Date: 2007-05-22
Classification: H04B,H04L

Abstract:
1. An apparatus for reducing interference within a communication system, the apparatus comprising: an antenna receiving a signal y(n), where y(n) comprises a desired signal, s(n), and a co-channel interfering signal, i(n), wherein s(n) and i(n) are not time-synchronized; a transformer for transforming y(n) into a frequency-domain signal Y(k); a weight calculator outputting a weight vector W(k), wherein W(k) is based on s(n) and i(n), and additionally based on a time offset T existing between s(n) and i(n); and a signal combiner applying W(k) to Y(k) in order to reduce co-channel interference i(n), wherein W(k) is additionally based on a spatial correlation matrix of the desired signal on a subcarrier k, R