This work investigates the phase gain of intelligent reflecting surface (IRS) covert
communication over complex-valued additive white Gaussian noise (AWGN) channels. The …

This work considers covert communications with the aid of an intelligent reflecting surface
(IRS). We jointly design the transmit power and IRS's reflection phase shifts and amplitudes …

Despite its potential for reducing the detection probability at the warden, the effectiveness of
covert communication in practical situations is often hindered by harsh wireless signal …

We consider the problem of covert communication over continuous-time additive white
Gaussian noise (AWGN) channels under spectral mask constraints. In addition to requiring …

This paper considers an intelligent reflecting surface (IRS)-assisted covert communication
system, where an IRS is deployed for the covert transmission from a legitimate transmitter …

Due to the open accessibility of wireless networks with severe privacy risks, covert
communication has gained increasing attention, where the effective range is limited by the …

Covert communications can hide the very existence of wireless transmissions and thus are
able to address privacy issues in numerous applications of the emerging Internet of Things …

Covert communication assisted by intelligent reflecting surface (IRS) has been widely
investigated. Specifically, IRS can reconfigure wireless propagation environment to …

While Gaussian signalling is assumed in many studies on covert communications, its
optimality has not been carefully investigated. In this work, we examine this optimality by …

Covert communications enable a transmitter to send information reliably in the presence of
an adversary, who looks to detect whether the transmission took place or not. We consider …