Patent ID: 7257377
Filing Date: 2007-08-14
Classification: H04L

Abstract:
1. A method for improving channel estimation in a wireless communication system, comprising: receiving a wireless signal that comprises a plurality of multipath components; obtaining N channel estimates, wherein N is any positive integer greater than one, wherein each channel estimate of the N channel estimates corresponds to a different multipath component of the plurality of multipath components, and wherein obtaining N channel estimates comprises: calculating a multipath correlation matrix which comprises information about how signal components within N of the plurality of multipath components are correlated with one another; calculating a noise covariance matrix which comprises information about how noise components within N of the plurality of multipath components are correlated with one another, wherein the multipath correlation matrix and the noise covariance matrix are used to reduce the effects of interference between the plurality of multipath components on the N channel estimates; and reducing the effects of interference between the plurality of multipath components on the N channel estimates.