Driven by the ever-increasing requirements of ultrahigh spectral efficiency, ultralow latency,
and massive connectivity, the forefront of wireless research calls for the design of advanced …

In this work, we aim to maximize the timeliness of data collection subject to a covertness
constraint in unmanned aerial vehicle (UAV)-aided Internet of Things (IoT) networks, where …

This paper presents a unicast beamforming network for covert ambient backscatter
communications (AmBC). Different from the prior covert backscatter works using artificial …

In this paper, we consider covert communications for bistatic backscatter systems, where a
tag transmits information passively to a reader by reflecting incident carrier signals with …

This work considers unmanned aerial vehicle (UAV) networks for collecting data covertly
from ground users. The full-duplex (FD) UAV intends to gather critical information from a …

In this work, we study the covert communications in ambient backscatter systems (ABS) with
uncontrollable RF source on AWGN channels. In contrast to the prior works impractically …

This work, for the first time, tackles channel estimation design with pilots in the context of
covert wireless communication. We consider Rayleigh fading for the communication channel …

In this paper, we propose a new framework for covert communication in hybrid
active/passive networks, which explores the inherent uncertainty of the backscatter …

This letter investigates the limit covert rate of ambient backscatter communications over
additive white Gaussian noise channel, where Alice expects to reliably transmit information …

Harvesting wireless power to energize miniature devices has been envisioned as a
promising solution to sustain future-generation energy-sensitive networks, eg, Internet-of …