Robust Near-Field Beamforming for Millimeter Wave Communication System with Aperture Perturbations

Abstract

In this paper, we develop a near-field beamforming algorithm that is robust against aperture deformations. We derive analytical expressions on the bounds of the elements of the steering vector as a function of the known bounds of the coordinate displacement. We apply these bounds during the optimization procedure to design beamformers that are robust to aperture perturbations. Simulation results show that the proposed robust near-field beamforming algorithm outperforms the available benchmark in the literature.