We study the impact of hardware impairments at the base station (BS) of an orthogonal frequency-division multiplexing (OFDM)-based massive multiuser (MU) multiple-input multiple-output (MIMO) uplink system. We leverage Bussgang's theorem to develop accurate models for the distortions caused by nonlinear low-noise amplifiers, local oscillators with phase noise, and oversampling finite-resolution analog-to-digital converters. By combining the individual effects of these hardware models, we obtain a composite model for the BS-side distortion caused by nonideal hardware that takes into account its inherent correlation in time, frequency, and across antennas. We use this composite model to analyze the impact of BS-side hardware impairments on the performance of realistic massive MU-MIMO-OFDM uplink systems.
@article{arxiv.1812.02078,
title = {Massive MU-MIMO-OFDM Uplink with Hardware Impairments: Modeling and Analysis},
author = {Sven Jacobsson and Ulf Gustavsson and Giuseppe Durisi and Christoph Studer},
journal= {arXiv preprint arXiv:1812.02078},
year = {2019}
}