In this letter, we investigate covert relay communications with finite block-length against
combining detection, in which two-hop signals received by the warden can be combined to …

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

In this paper, we investigate the feasibility and performance of the covert communication
with a spectrum sharing relay in the finite blocklength regime. Specifically, the relay …

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 …

Multi-hop transmissions are desirable in realizing large-scale long-distance covert wireless
communications, since a single-hop transmission cannot fully satisfy the covertness …

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 …

This paper investigates the covert communications via cooperative jamming and relay
selection in a wireless relay system, where a source intends to transmit a message to its …

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 …

Covert communication is crucial to preventing the warder's detection of wireless
transmission. In general, small transmit power is required to satisfy the covertness …