UAV-relay Assisted Covert Communication with Finite Block-length

HU Jinsong; WU Linmei; SHU Feng; CHEN Youjia; ZHENG Haifeng

doi:10.11999/JEIT211372

Volume 44 Issue 3

Mar. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(3): 1006-1013

HU Jinsong, WU Linmei, SHU Feng, CHEN Youjia, ZHENG Haifeng. UAV-relay Assisted Covert Communication with Finite Block-length[J]. Journal of Electronics & Information Technology, 2022, 44(3): 1006-1013. doi: 10.11999/JEIT211372

Citation:

HU Jinsong, WU Linmei, SHU Feng, CHEN Youjia, ZHENG Haifeng. UAV-relay Assisted Covert Communication with Finite Block-length[J]. Journal of Electronics & Information Technology, 2022, 44(3): 1006-1013. doi: 10.11999/JEIT211372

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UAV-relay Assisted Covert Communication with Finite Block-length

doi: 10.11999/JEIT211372

1.
College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China
2.
School of Information and Communication Engineering, Hainan University, Haikou 570228, China

Funds: The National Natural Science Foundation of China (62001116, 62071234, 61971139, 61771244)

Received Date: 2021-11-30
Accepted Date: 2022-02-21
Rev Recd Date: 2022-02-19

Available Online: 2022-03-01

Publish Date: 2022-03-28

Abstract

Abstract

To avoid the high detection in long-distance covert communications due to the large transmission power, an Unmanned Aerial Vehicle (UAV)-relay based covert communication scheme with finite block block-length is proposed in this paper. Firstly, the Signal-to -Noise-Ratio (SNR) at the legal receiver via the UAV-relay is derived, based on which the outage probability and throughput of the covert communication link are also obtained. Secondly, the detection performance of the monitor is analyzed, i.e. KL (Kullback-Leibler) scatter, and it is used as a constraint on the covert communication. Finally, to maximize the throughput of the covert communication, the transmission power at the transmitter and the UAV-relay, as well as the flight height of UAV are jointly optimized. The simulation results verify the performance of the proposed covert communication scheme, and also show its superiority to the traditional strategies without UAVs since it greatly reduces the KL divergence at the warder.
- Covert communication,
- Unmanned Aerial Vehicle (UAV),
- Relay,
- Finite block-length

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References(17)

References

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