Direction of arrival estimation for smart antenna in multipath environment using convolutional neural network

Abstract

This article aims to present a novel direction of arrival (DOA) estimation strategy for smart antenna in multipath environment. The smart antenna is composed of 2 main parts: the DOA estimator and the switched-beam system. In the first part, a DOA estimation method based on convolutional neural network (CNN) has been implemented. The CNN is capable to select the desired radiation beams of the switched-beam antenna without knowing the number of source signals coming from different directions, and in the case of noncoherent and coherent signals. Simulation results have been presented to show the effectiveness of the proposed intelligent approach.