Broad-band generalized sidelobe canceller using multichannel least-squares lattice structure

This paper is concerned with the multichannel lattice models and the application to the broad-band antenna filtering. The multichannel (normalized) Levinson algorithm, lattice structure and factorization are presented. The multichannel adaptive (normalized) least-squares lattice structure and algorithm are described. These structures can be used to replace the joint filtering part of the broad-band generalized sidelobe canceller and the adaptive algorithm can be considered as the alternative of the gradient descent algorithm. The experimental results are compared with that obtained from the multichannel multisection structure, extension of the triangular systolic array realizing the QR decomposition using the Givens rotations