Patent ID: 6501747
Filing Date: 2002-12-31
Classification: H04B

Abstract:
A method of signal processing for a wireless communication system, comprising:receiving a set of de-spread vectors yi, wherein i=1 to N and N is the number of possible received symbols from a wireless transmission; spatially correlating each of the de-spread vectors yi with an array manifold matrix C to produce a correlation matrix P, wherein each vector yi has M components, M being equal to the number of antenna output elements; determining angle of arrival (AOA) information of each vector yi from matrix P; determining angular distribution information from a collection of AOA information; creating a subspace matrix from the matrix C and the AOA and angular distribution information; projecting each vector yi into the subspace matrix to produce a set of N vectors zi; finding a vector zmax from the one of vectors zi having the maximum energy; averaging vector zmax to get a vector zavg; and multiplying vector zavg with the subspace matrix to produce a beamforming coefficient vector w.