Multipathreception using matrix calculation and adaptive beamforming.

摘要

Signals from multiple signal paths are received using a multi-element antenna (20) and a beam-forming network (36). Signals from each of the antenna elements are sampled (34) to form a sample vector. Several sample vectors are used to form an auto-covariance matrix. A singular value decomposition of the auto-covariance matrix is used to form three matrices. The first matrix is used to determine the number of signal paths and the second matrix is used to form several polynomials. The polynomial roots that are on or near the unit circle are used to determine points on the unit circle that are associated with each signal path. Each point on the unit circle is used to calculate weights for a beam-forming network (36) that forms a receive beam for each signal path. <IMAGE>