An alternative method of beamforming in the presence of correlated arrivals

Correlation between desired signal and unwanted interference can severely degrade the performance of an antenna array system. The author proposes a method to decorrelate the two sources and derives analytical expressions to show the decorrelation effect of the proposed technique. The proposed method makes use of an estimate of L×L dimensional array correlation matrix with L being the number of elements in the array. The matrix is averaged along each diagonal to constraint its structure to that of the Toeplitz structure for a linear array of equispaced elements. The structured matrix is then used to estimate the array weights