Hybrid Jammer Mitigation for All-Digital mmWave Massive MU-MIMO
Abstract
Low-resolution analog-to-digital converters (ADCs) simplify the design of millimeter-wave (mmWave) massive multi-user multiple-input multiple-output (MU-MIMO) basestations, but increase vulnerability to jamming attacks. As a remedy, we propose HERMIT (short for Hybrid jammER MITigation), a method that combines a hardware-friendly adaptive analog transform with a corresponding digital equalizer: The analog transform removes most of the jammer's energy prior to data conversion; the digital equalizer suppresses jammer residues while detecting the legitimate transmit data. We provide theoretical results that establish the optimal analog transform as a function of the user equipments' and the jammer's channels. Using simulations with mmWave channel models, we demonstrate the superiority of HERMIT compared both to purely digital jammer mitigation as well as to a recent hybrid method that mitigates jammer interference with a nonadaptive analog transform.
Cite
@article{arxiv.2111.13055,
title = {Hybrid Jammer Mitigation for All-Digital mmWave Massive MU-MIMO},
author = {Gian Marti and Oscar Castañeda and Sven Jacobsson and Giuseppe Durisi and Tom Goldstein and Christoph Studer},
journal= {arXiv preprint arXiv:2111.13055},
year = {2021}
}
Comments
Appeared at the Asilomar Conference on Signals, Systems, and Computers 2021