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 …

Low probability of detection (LPD) is an extremely important characteristic of an underwater
acoustic communication (UWAC) system when used for military-related applications, since …

We present a square root limit on the amount of information transmitted reliably and with low
probability of detection (LPD) over additive white Gaussian noise (AWGN) channels …

This paper considers the problem of communication over a discrete memoryless channel
(DMC) or an additive white Gaussian noise (AWGN) channel subject to the constraint that …

The past decade has seen many advances in physical layer wireless communication theory
and their implementation in wireless systems. This textbook takes a unified view of the …

Wireless technology is a truly revolutionary paradigm shift, enabling multimedia
communications between people and devices from any location. It also underpins exciting …

In this paper, we study delay-intolerant covert communications in additive white Gaussian
noise (AWGN) channels with a finite block length, ie, a finite number of channel uses …

Widely deployed encryption-based security prevents unauthorized decoding, but does not
ensure undetectability of communication. However, covert, or low probability of …

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 …

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