Angle of arrival detection by matching pursuit algorithm

In this paper, we propose a novel system architecture that employs a matching pursuit algorithm for angle of arrival detection. Two different basis selection algorithms, namely matching pursuit and orthogonal matching pursuit are investigated. The complexity of the algorithms are comparable to that of a simple beamformer, however their resolution capabilities are shown to be much higher. The proposed system does not require a priori knowledge on the number of angles to be resolved and uses very small amount of snapshots for convergence. Also, the performance is not affected by the correlation of the signals to be resolved, and it does not have the maximum separation requirements that arise in the case of ESPRIT.