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 …

Covert wireless communication ensures information security by hiding the existence of the
information transmission itself. Available works mainly focused on the covert throughput …

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 …

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 …

Covert communication aims to shield the very existence of wireless transmissions in order to
guarantee a strong security in wireless networks. In this work, for the first time we examine …

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 …

In this paper, we investigate the performance of covert communications in different types of a
relay system: decode-and-forward (DF), compress-and-forward (CF) and amplify-and …

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 …

This paper studies multi-antenna-aided covert communications coexisting with randomly
located wardens and interferers, considering both centralized and distributed antenna …

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 …