Title
Covert Communication With the Help of Relay and Channel Uncertainty
Abstract
Covert communication aims to hide the existence of the transmissions to guarantee the security in wireless communications. In this letter, channel uncertainty is exploited to achieve covert communication in relay networks. The transmitter Alice sends messages to the legitimate receiver Bob with the help of a relay, while the warden Willie wants to detect the existence of the transmission. The channel uncertainty introduces confusions to degrade the performance of Willie’s detection. We show that Alice can transmit <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${O}$ </tex-math></inline-formula> ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${n}$ </tex-math></inline-formula> ) bits in <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${n}$ </tex-math></inline-formula> channel uses covertly with the help of relay and channel uncertainty. Numerical results are shown to illustrate the achievability and the performance of the considered scenario.
Year
DOI
Venue
2019
10.1109/LWC.2018.2872058
IEEE Wireless Communications Letters
Keywords
Field
DocType
Relays,Uncertainty,Detectors,Jamming,Receivers,Rayleigh channels
Transmitter,Wireless,Rayleigh channels,Computer network,Communication channel,Detector,Jamming,Mathematics,Relay,Covert communication
Journal
Volume
Issue
ISSN
8
1
2162-2337
Citations 
PageRank 
References 
13
0.54
0
Authors
6
Name
Order
Citations
PageRank
Jianquan Wang15610.52
Wanbin Tang213819.42
Qiangqiang Zhu3130.54
Xiaoping Li4323.62
Hangmei Rao5140.89
Shaoqian Li62276195.05