6 research outputs found
Covert Communications with a Full-Duplex Receiver over Wireless Fading Channels
In this work, we propose a covert communication
scheme where the transmitter attempts to hide its transmission to
a full-duplex receiver, from a warden that is to detect this covert
transmission using a radiometer. Specifically, we first derive the
detection error rate at the warden, based on which the optimal
detection threshold for its radiometer is analytically determined
and its expected detection error rate over wireless fading channels
is achieved in a closed-form expression. Our analysis indicates
that the artificial noise deliberately produced by the receiver
with a random transmit power, although causes self-interference,
offers the capability of achieving a positive effective covert rate
for any transmit power (can be infinity) subject to any given
covertness requirement on the expected detection error rate. This
work is the first study on the use of the full-duplex receiver with
controlled artificial noise for achieving covert communications
and invites further investigation in this regard.ARC Discovery Projects Grant DP15010390
Covert Communications with a Full-Duplex Receiver over Wireless Fading Channels
In this work, we propose a covert communication scheme where the transmitter attempts to hide its transmission to a full-duplex receiver, from a warden that is to detect this covert transmission using a radiometer. Specifically, we first derive the detection error rate at the warden, based on which the optimal detection threshold for its radiometer is analytically determined and its expected detection error rate over wireless fading channels is achieved in a closed-form expression. Our analysis indicates that the artificial noise deliberately produced by the receiver with a random transmit power, although causes self-interference, offers the capability of achieving a positive effective covert rate for any transmit power (can be infinity) subject to any given covertness requirement on the expected detection error rate. This work is the first study on the use of the full- duplex receiver with controlled artificial noise for achieving covert communications and invites further investigation in this regard.This work was supported in part by the National Natural
Science Foundation of China (Nos. 61472190, 61501238,
61727802, and 61771244), the Australian Research Council’s
Discovery Project (DP150103905), the Jiangsu Provincial Science Foundation Project (BK20150786), and the open research
fund of National Mobile Communications Research Laboratory, Southeast University, China (No. 2017D04)