Joint Optimization of 3D Hybrid Beamforming and User Scheduling for 2D Planar Antenna Systems

Abstract

We consider a single-cell network in which a base station (BS) serves a set of users. We assume 2D planar antenna systems at the BS in which the BS applies 3D hybrid beamforming to serve a set of scheduled users. Unlike the previous 3D hybrid beamforming, we consider a joint optimization of elevation beamforming and user scheduling to maximize the overall throughput. Extensive numerical evaluation is performed to demonstrate the performance of the proposed scheme. Specifically, simulations have been carried out by utilizing 3D channel models based on ray-tracing methodologies as describes by the 3rd generation project partnership (3GPP) TR36.873 document. Simulation results show that the proposed scheme provides an improved throughput compared to the conventional elevation beamforming schemes.