International Symposium on Problems of Redundancy in Information and Control Systems (REDUNDANCY)

Complete Covertness In NOMA Using Artificial Noise

Nikola Zlatanov

Published Nov 5, 2025• 0 citations

Abstract

We consider the situation where a transmitter communicates with a legitimate receiver and at the same time aims to send a covert message to a covert receiver while ensuring that the covert message is non-detectable at a third receiver, referred to as the warden. The considered system belongs to the class of non-orthogonal multiple access (NOMA) systems. For the considered NOMA system, we show that it is possible to achieve complete covertness, i.e., the error detection probability at the warden to be one, using artificial noise generated at the transmitter. Depending on the power of the artificial noise, there is a trade-off between the data rate achieved at the legitimate receiver and the covert data rate achieved at the covert receiver, while ensuring complete covertness.

DOI: 10.1109/redundancy68069.2025.11301432

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