The Channel Uncertainty of Warden on Disguised Full-Duplex Covert Communications 


Vol. 48,  No. 11, pp. 1365-1373, Nov.  2023
10.7840/kics.2023.48.11.1365


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  Abstract

In this paper, we investigate a covert communications system that consists of a source node communicating with a disguised full-duplex (FD) destination node. Supposedly receive-only, the destination node covertly transmits confidential messages to a hidden receiver while avoiding the surveillance of a warden node. Our specific focus is on the impact of the channel uncertainty of the warden node from the perspective of the destination node on covert communications. We take the expected minimum detection error probability (DEP) at the warden node into consideration and obtain the optimal public data rate and transmit power to maximize the covert rate. Numerical results verify that the covert rate increases as the availability of the channel state information (CSI) improves and highlight the importance of optimization regardless of the level of CSI based on comparisons with baseline schemes.

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[IEEE Style]

J. Moon, "The Channel Uncertainty of Warden on Disguised Full-Duplex Covert Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 48, no. 11, pp. 1365-1373, 2023. DOI: 10.7840/kics.2023.48.11.1365.

[ACM Style]

Jihwan Moon. 2023. The Channel Uncertainty of Warden on Disguised Full-Duplex Covert Communications. The Journal of Korean Institute of Communications and Information Sciences, 48, 11, (2023), 1365-1373. DOI: 10.7840/kics.2023.48.11.1365.

[KICS Style]

Jihwan Moon, "The Channel Uncertainty of Warden on Disguised Full-Duplex Covert Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 48, no. 11, pp. 1365-1373, 11. 2023. (https://doi.org/10.7840/kics.2023.48.11.1365)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880