In this paper, we study covert communications between a pair of legitimate transmitter-
receiver against a watchful warden over slow fading channels. There coexist multiple …

Covert communications enable a transmitter to send information reliably in the presence of
an adversary, who looks to detect whether the transmission took place or not. We consider …

摘要无线隐蔽通信是将消息隐藏在无线通信数据帧和信号中进行隐蔽传输的技术,
属于无线通信和信息隐藏技术的交叉领域, 其理论与技术的研究方兴未艾. 本文分析了无线隐蔽 …

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

A device-to-device (D2D) communication link is vulnerable because it is relatively easy to be
compromised by adversaries due to the fact that D2D terminals are power limited nodes …

Wireless covert communication is the technology of hiding messages in wireless
communication data frames and signals for covert transmission, which belongs to the cross …

Wireless short-packet communications pose challenges to the reliability and security of the
transmission. Besides, the proactive warder compounds these challenges, who detects and …

Multiantenna technique can provide a substantial rate gain for wireless communication;
however, when applied in covert wireless communication, the potential detecting risk of pilot …

It is well known that finite blocklength analysis plays an important role in evaluating
performances of communication systems in practical settings. This paper considers the …

This paper considers beamforming techniques for covert communication over multiple input
single output (MISO) channels with finite blocklength. We first show that the optimal input …