Covert MIMO Communications under Variational Distance Constraint
Information Theory
2025-07-21 v2 math.IT
Abstract
The problem of covert communication over Multiple-Input Multiple-Output (MIMO) Additive White Gaussian Noise (AWGN) channels is investigated, in which a transmitter attempts to reliably communicate with a legitimate receiver while avoiding detection by a passive adversary. The covert capacity of the MIMO AWGN is characterized under a variational distance covertness constraint when the MIMO channel matrices are static and known. The characterization of the covert capacity is also extended to a class of channels in which the legitimate channel matrix is known but the adversary's channel matrix is only known up to a rank and a spectral norm constraint.
Cite
@article{arxiv.2102.11336,
title = {Covert MIMO Communications under Variational Distance Constraint},
author = {Shi-Yuan Wang and Matthieu R. Bloch},
journal= {arXiv preprint arXiv:2102.11336},
year = {2025}
}
Comments
22 pages, 1 figure, accepted to Transactions on Information Forensics & Security