Enhancing Covert Secrecy Rate in A Zero-Forcing UAV Jammer-Assisted Covert Communication
Chen, X., Chang, Z., & Hämäläinen, T. (2024). Enhancing Covert Secrecy Rate in A Zero-Forcing UAV Jammer-Assisted Covert Communication. IEEE Wireless Communications Letters, Early Access. https://doi.org/10.1109/lwc.2024.3465871
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IEEE Wireless Communications LettersDate
2024Copyright
© Authors 2024
Covert communications can hide confidential signals in environmental noise to avoid being detected and provide comprehensive security for wireless transmissions. However, there still exist significant risks in wireless transmission once being detected. In this paper, we propose a more secure covert scheme, where a multiple antennas transmitter, assisted by a multi-antenna UAV jammer, maximizes the covert secrecy rate under the scenarios of both correct and incorrect detection by a warden with both error detection probability and eavesdropping rate limitations satisfied. The transmitter and jammer adopt maximum ratio transmission (MRT) and zero-forcing, respectively, to maximize the transmission rate and minimize the interference at the legitimate receiver. First, we analyze the monotonicity of error detection probability to determine the optimal power detection threshold and the corresponding smallest error detection probability. Then, under this worst case, we jointly optimize the transmit and jamming power to maximize the covert secrecy rate while guaranteeing the covert and eavesdropping limits meet their requirements, respectively. Finally, simulation results are presented to prove the correctness of the theoretical conclusion and evaluate the effectiveness of our proposed scheme.
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Institute of Electrical and Electronics Engineers (IEEE)ISSN Search the Publication Forum
2162-2337Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/243201288
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European CommissionFunding program(s)
MSCA others, HE
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
This work is partly supported by the National Natural Science Foundation of China (NSFC) under Grant 62071105 and supported in part by Horizon EU Grant No. 101086159.License
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