In this paper, we investigate covert communication in an intelligent reflecting surface (IRS)-
assisted non-orthogonal multiple access (NOMA) system, where a legitimate transmitter …

With the gradual promotion of the fifth generation (5G) mobile communication and Internet of
Things (IoT) applications, wireless communication transmission will be more vulnerable to …

This letter considers covert communication in downlink NOMA systems, where a public
action (communication from Alice to the NOMA-weak user U1) is used to provide a cover for …

The integration of intelligent reflecting surface (IRS) and multiple access provides a
promising solution to improved coverage and massive connections at low cost. However …

This letter investigates secure transmission in an intelligent reflecting surface (IRS) assisted
non-orthogonal multiple access (NOMA) network. Consider a practical eavesdropping …

Intelligent reflecting surface (IRS) is deemed a promising technique for future wireless and
mobile technologies due to its ability to reconfigure the radio propagation environment. In …

This article investigates the intelligent reflecting surface (IRS)-aided multi-antenna covert
communications. In particular, with the help of an IRS, a favorable communication …

With growing security threats to the evolving wireless systems, protecting user privacy
becomes progressively challenging. Even if the transmitted information is encrypted and the …

In this work, we investigate a novel covert communication system, where the legitimate
transmitter attempts to communicate with a covert user in the presence of a warden and the …

This work examines the performance gain achieved by deploying an intelligent reflecting
surface (IRS) in covert communications. To this end, we formulate the joint design of the …