METHOD FOR IMPROVING A CHANNEL ESTIMATE IN A RADIOCOMMUNICATIONS SYSTEM

摘要

The invention relates to a method for improving a channel estimate of a radio signal which is transmitted in a radiocommunications system that operates with an adaptive antenna comprising a plurality M of antenna elements. Said method comprises the following steps: forming a spatial covariance matrix using a starting channel estimate, this starting channel estimate being in the form of a vector in an M-dimensional vector space; determining a number Ln of eigenvectors of the spatial covariance matrix which is smaller than the plurality M of the antenna elements; calculating a projection of the starting channel estimate onto the sub-space spanned by the Ln eigenvectors; replacing the starting channel estimate with the projection.