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 …

Covert transmission is studied for an intelligent reflecting surface (IRS) aided communication
system, where Alice aims to transmit messages to Bob without being detected by the warden …

Short packet communications play key roles in the Internet-of-Things. Conventional
Shannon's coding theorem is not applicable for short packet communications, and the …

In this work, we design a covert jamming scheme against an intelligent Eve towards physical
layer security in a cooperative cognitive radio networks. To protect the primary message …

Device-to-device (D2D) communications underlaid cellular networks have emerged as a
promising network architecture to provide extended coverage and high data rate for various …

In this paper, we study the beamforming schemes via the novel frequency diverse array
(FDA) on enhancing covert communications performance. We first consider the ideal …

In this paper, we investigate the optimal probabilistic constellation shaping design for covert
communication systems from a practical view. Different from conventional covert …

This paper focuses on the covert communication in a two-hop relay system consisting of a
transmitter, a relay, a receiver and a warden, where the relay can flexibly select between the …

The frequency diverse array (FDA) technology plays an important role in covert
communication. In this letter, we consider a FDA-aided covert communication system with …

This paper proposes a novel joint channel estimation and beamforming scheme for the
massive multiple-input-multiple-output (MIMO) frequency-division duplexing (FDD) wireless …