Covert Communications with Extremely Low Power under Finite Block Length over Slow Fading
This paper investigates the achievable message transmission rate of covert communication over slow fading channels where the channel coefficient remains unchanged over a finite transmission block. Such communication is often implemented with an extremely low transmission power aiming to achieve low probability of detection by the eavesdropper and under tolerable probability of decoding error for the legitimate receiver. The exact expression of achievability and asymptotic covert bounds are derived, which are shown in accordance with the square root law in AWGN (Additive White Gaussian Noise) channels with large transmission blocks. The case that the eavesdropper has unknown channel state information is also studied in the paper.
H. Tang et al., "Covert Communications with Extremely Low Power under Finite Block Length over Slow Fading," Proceedings of the 2018 IEEE Conference on Computer Communications Workshops (2018, Honolulu, HI), pp. 657-661, Institute of Electrical and Electronics Engineers (IEEE), Apr 2018.
The definitive version is available at https://doi.org/10.1109/INFCOMW.2018.8406961
2018 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS (2018: Apr. 15-19, Honolulu, HI)
Electrical and Computer Engineering
National Key R&D Program of China
National Natural Science Foundation (China)
National Science Foundation (U.S.)
Wilkens Missouri Endowment
Keywords and Phrases
Communication channels (information theory); Fading channels; Gaussian noise (electronic); White noise; Additive White Gaussian noise; Channel coefficient; Covert communications; Low probability of detections; Low-power communication; Message transmissions; Security; Slow fading channel; Channel state information; Low Power Communications
International Standard Book Number (ISBN)
Article - Conference proceedings
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