Proactive Eavesdropping in Two-Way Amplify-and-Forward Relay Networks

Hu, Guojie; Ouyang, Jian; Cai, Yueming

doi:10.1109/jsyst.2020.3012758

Cited by 14 publications

(8 citation statements)

References 32 publications

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“…Otherwise, ξ is a monotonically decreasing function of τ in this case and the corresponding optimal value of τ is τ * = +∞. Consequently, we obtain the overall optimal τ * given in (25) and the corresponding minimum detection error probability ξ * given in (26).…”

Section: Appendix a Proof Of Lemmamentioning

confidence: 95%

“…and n r ∈ C is the AWGN at Receiver with zero mean and variance σ 2 r . Since the AN signal is known to Receiver, the self-interference caused by AN can be suppressed by interference cancellation techniques [26,27]. In this work, we assume that the self-interference cannot be perfectly cancelled and the residual self-interference is φP r , where φ is the selfinterference cancellation coefficient capturing the quality of cancellation.…”

Section: System Model a Considered Scenario And Adopted Assumptionsmentioning

confidence: 99%

“…P s and p. To ease further analysis, we denote s 1 and s 2 as the two solutions of P s to f 1 (P s ) = 0 with s 1 ≤ s 2 . We note that P s and p are independent in the expression for ξ * given in (26), and thus we can also analyze the monotonicity of ξ * w.r.t. P s and p, separately.…”

Section: Appendix C Proof Of Theoremmentioning

confidence: 99%

“…Specifically, as per (16), we find that q is a monotonically increasing function of p. Due to the constraint (29d), for a given P s , the maximum value of q is q = 1 1+µ1Ps achieved by p = 1. Based on the two cases of ξ * given in (26), for a given P s , we optimize p in the following two cases. Case I: f 4 (P s ) ≤ 0…”

Section: Appendix C Proof Of Theoremmentioning

confidence: 99%

See 3 more Smart Citations

Probabilistic Accumulate-then-Transmit in Wireless-Powered Covert Communications

Wang¹,

Yan²,

Yang³

et al. 2021

Preprint

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In this paper, we investigate the optimal design of a wireless-powered covert communication (WP-CC) system, in which a probabilistic accumulate-then-transmit (ATT) protocol is proposed to maximize the communication covertness subject to a quality-of-service (QoS) requirement on communication. Specifically, in the considered WP-CC system, a full-duplex (FD) receiver transmits artificial noise (AN) to simultaneously charge an energy-constrained transmitter and to confuse a warden's detection on the transmitter's communication activity. With the probabilistic ATT protocol, the transmitter sends its information with a prior probability, i.e., p, conditioned on the available energy being sufficient. Our analysis shows that the probabilistic ATT protocol can achieve higher covertness than the traditional ATT protocol with p = 1. In order to facilitate the optimal design of the WP-CC system, we also derive the warden's minimum detection error probability and characterize the effective covert rate from the transmitter to the receiver to quantify the communication covertness and quality, respectively. The derived analytical results facilitate the joint optimization of the probability p and the information transmit power. We further present the optimal design of a cable-powered covert communication (CP-CC) system as a benchmark for comparison. Our simulation shows that the proposed probabilistic ATT protocol (with a varying p) can achieve the covertness upper bound determined by the CP-CC system, while the traditional ATT protocol (with p = 1) cannot, which again confirms the benefits brought by the proposed probabilistic ATT in covert communications.

show abstract

Section: Appendix a Proof Of Lemmamentioning

confidence: 95%

Section: System Model a Considered Scenario And Adopted Assumptionsmentioning

confidence: 99%

Section: Appendix C Proof Of Theoremmentioning

confidence: 99%

Section: Appendix C Proof Of Theoremmentioning

confidence: 99%

See 2 more Smart Citations

Probabilistic Accumulate-then-Transmit in Wireless-Powered Covert Communications

Wang¹,

Yan²,

Yang³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…To further enhance the eavesdropping ability of the monitor, an advanced spoofing technique was proposed in [8]- [10], in which a spoofing relay can forward constructive or destructive signals to the suspicious receiver when the monitor experiences a strong eavesdropping channel or suffers from a poor eavesdropping channel, respectively. Wireless information surveillance via proactive eavesdropping has also been investigated in numerous scenarios, such as relay-based suspicious links [11]- [14], relay-based monitoring links [15], [16], multiple suspicious communication links [17]- [20], and millimeter wave (mmWave) communication systems [21].…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency for Proactive Eavesdropping in Cooperative Cognitive Radio Networks

Ching¹

2022

Preprint

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Energy-harvesting recursive filtering for delayed systems with amplify-and-forward relays: Cooperative communication manner

Dai,

Li,

Zhang

et al. 2024

Journal of the Franklin Institute

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Proactive Eavesdropping in Two-Way Amplify-and-Forward Relay Networks

Cited by 14 publications

References 32 publications

Probabilistic Accumulate-then-Transmit in Wireless-Powered Covert Communications

Probabilistic Accumulate-then-Transmit in Wireless-Powered Covert Communications

Energy Efficiency for Proactive Eavesdropping in Cooperative Cognitive Radio Networks

Energy-harvesting recursive filtering for delayed systems with amplify-and-forward relays: Cooperative communication manner

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