Patent ID: 7106780
Filing Date: 2006-09-12
Classification: H04B

Abstract:
1. A receiver comprising: a plurality of antenna elements for receiving a data signal; for each antenna element, a plurality of Rake fingers coupled to the antenna element, each finger having a delay, a despreader and a complex weight gain weighing device; a complex weight gain generation device coupled to an output of each despreader and an input of each complex weight gain device, wherein the complex weight gain generation device performs a complex conjugate transpose of an inverse of a noise correlation matrix multiplied by a channel estimate, the noise correlation matrix being derived by averaging a multiplication of the channel estimate with its complex conjugate transpose over each Rake finger, producing a first matrix, and averaging a multiplication of the output of each despreader with its complex conjugate transpose over each Rake finger, producing a second matrix, and subtracting the first matrix from the second matrix, producing the noise correlation matrix; and a summer coupled to an output of each complex weight gain device, producing an estimate of the data signal.