Covert wireless communication aims to hide the very existence of wireless transmissions in
order to guarantee a strong security in wireless networks. In this paper, we examine the …

In this letter, we investigate covert communication in relay networks with relay selection. We
consider the scenario that while forwarding the source's message, the selected relay …

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 …

Covert communication aims to hide the existence of the transmissions to guarantee the
security in wireless communications. In this letter, channel uncertainty is exploited to achieve …

Covert communication hides the transmission of a message from a watchful adversary, while
ensuring reliable information decoding at the receiver, providing enhanced security in …

This work, for the first time, tackles channel estimation design with pilots in the context of
covert wireless communication. We consider Rayleigh fading for the communication channel …

This paper examines the possibility, performance limits, and associated costs for a self-
sustained relay to transmit its own covert information to a destination on top of forwarding the …

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 …

In covert communication, Alice tries to communicate with Bob without being detected by a
warden Willie. When the distance between Alice and Bob becomes large compared with the …

Internet of Things (IoT) systems are of paramount importance to provide ubiquitous wireless
connectivity for smart cities. However, such systems are facing security challenges due to …