Hybrid Beamforming for MISO Multicasting with Finite-Resolution Phase Shifters

Abstract

This work deals with precoder design of a multiple-input single-output multicasting system with hybrid beamforming architecture. The main objective is to maximize the minimum received signal-to-noise ratio of all users taking into account of finite-resolution phase shifters. To address the non-convex nature of the optimization problem, the semi-definite relaxation technique is employed. Together with the alternating optimization approach, several heuristic algorithms are proposed. Numerical results show that the proposed algorithms are effective when compared with existing algorithms.