This paper considers a game-theoretic formulation of the covert communications problem
with finite blocklength, where the transmitter (Alice) can randomly vary her transmit power in …

We analyze and optimize the secrecy performance of artificial noise (AN) in multi-input
single-output wiretap channels with multiple antennas at the transmitter and a single …

We consider a covert communication scenario where a transmitter wishes to communicate
simultaneously to two legitimate receivers while ensuring that the communication is not …

Physical layer security is an emerging security area that achieves perfect secrecy data
transmission between intended network nodes, while malicious nodes that eavesdrop 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 this work, we consider a system of covert communication with the aid of a full-duplex (FD)
receiver to enhance the performance in a more realistic scenario, ie, only the channel …

The study of the fundamental limits of covert communications, where a transmitter Alice
wants to send information to a desired recipient Bob without detection of that transmission by …

Physical layer security has recently been regarded as an emerging technique to
complement and improve the communication security in future wireless networks. The …

Covert communication can prevent adversary from knowing the existence of the
transmissions while guaranteeing the security in wireless communications. In this paper …

In this paper, we consider a scenario where a source node wishes to broadcast two
confidential messages to two receivers, while a wire-tapper also receives the transmitted …