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Performance Analysis of Wireless Information Surveillance in Machine-Type Communication at Finite Blocklength Regime

Department of Electronic and Communication Engineering, North China Electric Power University, No. 619, Yong Hua Street, Baoding 071003, China
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Author to whom correspondence should be addressed.
Sensors 2019, 19(13), 3031; https://doi.org/10.3390/s19133031
Received: 11 May 2019 / Revised: 24 June 2019 / Accepted: 6 July 2019 / Published: 9 July 2019
(This article belongs to the Section Internet of Things)
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Abstract

The Internet of Things (IoT) will feature pervasive sensing and control capabilities via the massive deployment of machine-type communication devices in order to greatly improve daily life. However, machine-type communications can be illegally used (e.g., by criminals or terrorists) which is difficult to monitor, and thus presents new security challenges. The information exchanged in machine-type communications is usually transmitted in short packets. Thus, this paper investigates a legitimate surveillance system via proactive eavesdropping at finite blocklength regime. Under the finite blocklength regime, we analyze the channel coding rate of the eavesdropping link and the suspicious link. We find that the legitimate monitor can still eavesdrop the information sent by the suspicious transmitter as the blocklength decreases, even when the eavesdropping is failed under the Shannon capacity regime. Moreover, we define a metric called the effective eavesdropping rate and study the monotonicity. From the analysis of monotonicity, the existence of a maximum effective eavesdropping rate for a moderate or even high signal-to-noise (SNR) is verified. Finally, numerical results are provided and discussed. In the simulation, we also find that the maximum effective eavesdropping rate slowly increases with the blocklength. View Full-Text
Keywords: wireless information surveillance; proactive eavesdropping; finite blocklength; channel coding rate; IoT; machine-type communication wireless information surveillance; proactive eavesdropping; finite blocklength; channel coding rate; IoT; machine-type communication
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Dong, R.; Li, B.; Yan, B. Performance Analysis of Wireless Information Surveillance in Machine-Type Communication at Finite Blocklength Regime. Sensors 2019, 19, 3031.

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