Low Probability of Detection Communication: Opportunities and Challenges

Yan, Shihao; Zhou, Xiangyun; Hu, Jinsong; Hanly, Stephen V.

doi:10.1109/mwc.001.1900057

Cited by 235 publications

(67 citation statements)

References 44 publications

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“…1∕(P ca d − cw − P ba d − bw ) = −c 2 . Note that there is an implied condition 2 i ≠ 2 j in Equation (45), hence we compute the in the following two cases.…”

Section: Resultsmentioning

confidence: 99%

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Multi‐antenna joint covert communication with a public communication link over wireless fading channel

2021

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This paper studies multi-antenna covert communication exploiting a public communication link over the wireless fading channel. In particular, a relatively practical covert communication scenario is considered for the first time, where a warden with radiometer may improve its detection accuracy by jointly detecting uplink covert pilot and downlink covert communication. To this end, a joint covert communication system, jointly considering uplink covert pilot, imperfect channel state information issue and downlink covert communication, is proposed and further studied. Specifically, the detection performance of warden and the covertness performance of system are comprehensively studied, respectively. Afterwards, an optimization problem for covert capacity is formulated to maximize overall performance. Then, with our analysis and simplification, an optimal power allocation algorithm is designed for covert capacity accordingly. Our examination shows a winwin situation has been achieved in the proposed system, that is, covert communication would rarely affect the normal communication of public link and occupy its communication resources. Interestingly enough, we analytically find an invariance property of downlink covert communication that covertness performance is not impacted by noise levels or warden's position. Based on this extraordinary finding, we conclude that the downlink covert communication system can perfectly combat with a powerful warden adopting power trend test method, while the joint covert communication system may resist that through a pilot deception scheme. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…1∕(P ca d − cw − P ba d − bw ) = −c 2 . Note that there is an implied condition 2 i ≠ 2 j in Equation (45), hence we compute the in the following two cases.…”

Section: Resultsmentioning

confidence: 99%

“…Then, we can obtain that obeys generalized chi-squared distribution with k = 2, 2 1 = P ca d − cw , 2 2 = P ba d − bw and c 1 =…”

Section: Appendix 2: Poof Of Lemmamentioning

confidence: 99%

Multi‐antenna joint covert communication with a public communication link over wireless fading channel

2021

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“…The second one applies mainly to watermarking and covert channels. The differences between LPD and PLS are most easily presented by employing typical problem analysis models for these areas of science [ 24 ].…”

Section: Security Aspects Of Watermarking Covert Channels and Nomamentioning

confidence: 99%

From Constellation Dithering to NOMA Multiple Access: Security in Wireless Systems

Grzesiak

Piotrowski

2021

Sensors

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In recent years, there has been a noticeable increase in interest in the possibilities of embedding additional data in the constellation of an already existing information signal in radio technology. This solution more precisely is based on adding a low power signal (or signals) to a stronger signal (cover). As will be described in the article, this technique is used in numerous radio communication areas, such as watermarking, covert channel creation, and multiple access techniques. Typically, those areas are considered as independent research topics. Our comparison suggests that these areas are closely related. In this article, a comprehensive survey of the implementation of signal superposition is conducted with an emphasis on the similarities and differences between individual solutions. Since the nature of the signal model entails certain problems in the security area, we provide the reader with a review of the state-of-the-art research on this topic, including the PLS (physical layer security) and LPD (low probability of detection) issues.

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“…C Overt communication or low probability of detection (LPD) communication has recently emerged as a new transmission technology to address privacy and security in wireless networks [1]. Covert communication aims to perform a wireless communication with a low probability of being detected, i.e., hiding the wireless communication.…”

Section: Introductionmentioning

confidence: 99%

Covert Communication With Relay Selection

Sun

Zhang

et al. 2021

IEEE Wireless Commun. Lett.

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In this letter, we investigate covert communication in relay networks with relay selection. We consider the scenario that while forwarding the source's message, the selected relay opportunistically transmits its own message to the destination covertly. We derive the probability of detection error (PDE) and the average covert rate (ACR) in a closed form, based on which we analyse the effects of system parameters on the performance of the covert communication. Our analysis indicates that applying relay selection causes a decrease in the PDE, however, it can provide an ACR gain when the transmission rate of the source increases.

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Low Probability of Detection Communication: Opportunities and Challenges

Cited by 235 publications

References 44 publications

Multi‐antenna joint covert communication with a public communication link over wireless fading channel

Multi‐antenna joint covert communication with a public communication link over wireless fading channel

From Constellation Dithering to NOMA Multiple Access: Security in Wireless Systems

Covert Communication With Relay Selection

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