@conference {15170,
	title = {HBF-PDVG: Hybrid beamforming and user selection for UL MU-MIMO mmWave systems},
	booktitle = {IEEE Global Communications Conference (Globecom)},
	year = {2018},
	month = {Dec. 2018},
	pages = {1-6},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {In this paper, a novel hybrid beamforming (HBF)\&nbsp;design utilizing a pre-defined virtual grouping (PDVG) algorithm\&nbsp;is proposed for the uplink (UL) multi-user (MU) multiple-input\&nbsp;multiple-output (MIMO) millimeter wave (mmWave) systems. The\&nbsp;computational complexity of achieving traditional MU-MIMO\&nbsp;beamforming (BF) methods in the mmWave systems becomes\&nbsp;significant due to the hardware constraints. Thus, the proposed\&nbsp;HBF-PDVG algorithm aims to reduce the feedback overhead\&nbsp;by employing a three-phase algorithm. The essential idea is to\&nbsp;perform the user selection independently from the HBF design\&nbsp;by utilizing the PDVG algorithm after completing the analog\&nbsp;BF training and then mitigating the remaining MU interference\&nbsp;among the selected users using digital BF. Simulation results\&nbsp;demonstrate the significant sum-rate benefits of the HBF-PDVG\&nbsp;algorithm compared with zero-forcing (ZF) and random selection\&nbsp;algorithm methods.},
	url = {https://ieeexplore.ieee.org/document/8644274},
	author = {Khalid Aldubaikhy and Wen Wu and Xuemin Sherman Shen}
}
