Information security has always been a critical issue in wireless networks. Apart from other
secure techniques, covert communication emerges as a potential solution to security for …

While sixth-generation (6G) wireless systems are expected to bring about an explosion of
accessible user information and novel technologies, along with new threats to terrestrial and …

With the benefits of unmanned aerial vehicle (UAV) and intelligent reflecting surface (IRS),
they can be combined to further enhance the communication performance. However, 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 …

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

Active intelligent reflecting surface (IRS) has been recently proposed to alleviate the product
path loss attenuation inherent in the IRS-aided cascaded channel. In this paper, we study an …

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 …

We investigate covert wireless communication in a multi-antenna relay network, where the
relay transmits its own covert message to the destination when assisting the source's …

Reconfigurable intelligent surface (RIS)-aided communication is considered as an exciting
research topic in academic and industrial communities since it provides an emerging …

This letter investigates the multi-input multi-output (MIMO) covert communication aided by
intelligent reflecting surface (IRS) against a multi-antenna warden. We establish a design …