Work

Covert Communication Over Additive-Noise Channels

Year: 2024

Type: article

Abstract: We study the fundamental limits of covert communications over general memoryless additive-noise channels. We assume that the legitimate receiver and the eavesdropper share the same channel and therefore see the same outputs. Under mild integrability assumptions, we find a general upper bound on the square-root scaling constant, which only involves the variance of the logarithm of the probability density function of the noise. Furthermore, we show that, under some additional assumptions, this upper bound is tight. We also provide upper bounds on the length of the secret key required to achieve the optimal scaling.

Source: IEEE Transactions on Information Theory

DOI: 10.1109/tit.2024.3522151

Authors: Cécile Bouette, Laura Luzzi, Ligong Wang

Institutions: Centre National de la Recherche Scientifique, CY Cergy Paris Université, Equipes Traitement de l'Information et Systèmes, École Nationale Supérieure de l'Électronique et de ses Applications, ETH Zurich

Language: English

Topic: Wireless Communication Security Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Agence Nationale de la Recherche

Award: PSI