Distortion-Aware Linear Precoding for Millimeter-Wave Multiuser MISO Downlink
arXiv:1906.11611
Abstract
In this work, we propose an iterative scheme for computing a linear precoder that takes into account the impact of hardware impairments in the multiuser multiple-input single-output downlink. We particularly focus on the case when the transmitter is equipped with nonlinear power amplifiers. Using Bussgang's theorem, we formulate a lower bound on the achievable sum rate in the presence of hardware impairments, and maximize it using projected gradient ascent. We provide numerical examples that demonstrate the efficacy of the proposed distortion-aware scheme for precoding over a millimeter-wave~channel.
Presented at IEEE ICC 2019 (Workshop on millimeter-wave communications for 5G and B5G)