Covert Surveillance via Proactive Eavesdropping Under Channel Uncertainty

Cheng, Zihao; Si, Jiangbo; Li, Zan; Guan, Lei; Zhao, Yan; Wang, Danyang; Cheng, Julian; Al-Dhahir, Naofal

doi:10.1109/tcomm.2021.3067058

Cited by 25 publications

(9 citation statements)

References 46 publications

(57 reference statements)

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“…respectively. Then the effective information monitoring rate R m is given as [5][6][7][24][25][26][27]]…”

Section: Problem Formulationmentioning

confidence: 99%

“…Let

R_{e}

and

R_{u}

denote the achievable data rate of the monitoring link from AP to the LR and the suspicious communication link from AP to the SIU, which can be expressed as

\begin{equation} {R_e} = {\log _2}{\left({1 + {\gamma _e}} \right)} \end{equation}

and

\begin{equation} {R_u} = {\log _2}{\left({1 + {\gamma _u}} \right)}, \end{equation}

respectively. Then the effective information monitoring rate

R_{m}

is given as [5–7, 24–27]

\begin{equation} {R_m} = {\left\lbrace { \def\eqcellsep{&}\begin{array}{*{20}{c}}{R_u},\quad {\text{ if }}{R_e} \ge {R_u},\\[5pt] 0,\quad {\text{ otherwise}}{\rm {.}} \end{array} } \right.}

…”

Section: System Model and Problem Formulationmentioning

confidence: 99%

“…[26] investigated the optimization of the mode selection between eavesdropping and jamming modes of multiple intermediate nodes to maximize eavesdropping rate, which indicates the potential performance gain brought by the deployment of multiple RISs to assist wireless information surveillance. In [27], it is assumed that only imperfect channel is known at the legitimate monitoring party during information surveillance in the single‐antenna transmitter case, which will be extended to our investigated scenario in future work.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface

Hua

Chunguo

et al. 2022

IET Communications

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This paper investigates a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface (RIS) beamforming and artificial noise jamming cooperation, aiming at monitoring the information sent by an access point (AP) to a suspicious illegal user (SIU). It is assumed that the AP adopt the fixed maximum ratio transmission (MRT) precoding scheme, which is not affected by the information monitoring party. The goal of this paper is to maximize the effective information monitoring rate by jointly optimizing the RIS phase shifts, the receive beamforming vector of the legitimate receiver (LR), and the transmit beamforming vector along with jamming power of the jamming antenna (JA). The resultant optimization problem is non-convex, and its optimization variables are highly coupled in the objective function and constraints. To tackle this difficulty, the optimization variables are optimized under the alternate optimization (AO) framework. Especially, the intractable RIS phase shifts are optimized by using Riemannian manifold optimization (RMO) algorithm under the penalty dual decomposition (PDD) framework and the semidefinite relaxation (SDR) technique, respectively. Numerical results verify the effectiveness of the proposed algorithms, and also demonstrate the superiority of the designed wireless information surveillance scheme over other benchmark schemes.

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“…respectively. Then the effective information monitoring rate R m is given as [5][6][7][24][25][26][27]]…”

Section: Problem Formulationmentioning

confidence: 99%

“…Let

R_{e}

and

R_{u}

denote the achievable data rate of the monitoring link from AP to the LR and the suspicious communication link from AP to the SIU, which can be expressed as

\begin{equation} {R_e} = {\log _2}{\left({1 + {\gamma _e}} \right)} \end{equation}

and

\begin{equation} {R_u} = {\log _2}{\left({1 + {\gamma _u}} \right)}, \end{equation}

respectively. Then the effective information monitoring rate

R_{m}

is given as [5–7, 24–27]

\begin{equation} {R_m} = {\left\lbrace { \def\eqcellsep{&}\begin{array}{*{20}{c}}{R_u},\quad {\text{ if }}{R_e} \ge {R_u},\\[5pt] 0,\quad {\text{ otherwise}}{\rm {.}} \end{array} } \right.}

…”

Section: System Model and Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface

Hua

Chunguo

et al. 2022

IET Communications

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show abstract

“…Due to the electromagnetic environment variations, there is noise uncertainty at Willie, which affects the covert rate significantly. When the bounded uncertainty model is applied, the PDF of the noise power at Willie is given by [25],…”

Section: System Modelmentioning

confidence: 99%

Covert Transmission Assisted by Intelligent Reflecting Surface

Zhao

et al. 2020

Preprint

Self Cite

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Covert transmission is studied for an intelligent reflecting surface (IRS) aided communication system, where Alice aims to transmit messages to Bob without being detected by the warden Willie.Specifically, an IRS is used to increase the data rate at Bob under a covert constraint. For the considered model, when Alice is equipped with a single antenna, the transmission power at Alice and phase shifts at the IRS are jointly optimized to maximize the covert transmission rate with either instantaneous or partial channel state information (CSI) of Willie's link. In addition, when multiple antennas are deployed at Alice, we formulate a joint transmit beamforming and IRS phase shift optimization problem to maximize the covert transmission rate. One optimal algorithm and two low-complexity suboptimal algorithms are proposed to solve the problem. Furthermore, for the case of imperfect CSI of Willie's link, the optimization problem is reformulated by using the triangle and the Cauchy-Schwarz inequalities.The reformulated optimization problems are solved using an alterative algorithm, semidefinite relaxation (SDR) and Gaussian randomization techniques. Finally, simulations are performed to verify our analysis.The simulation results show that an IRS can degrade the covert transmission rate when Willie is closer to the IRS than Bob.

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“…D. Xu et al considered a downlink suspicious NOMA network with multiple groups of suspicious users and proposed a heuristic iterative algorithm to maximize the number of successfully eavesdropped suspicious users [39]. In [40], under low detection probability condition at the suspicious receiver, the authors proposed an iterative search algorithm to maximize the surveillance performance.…”

Section: Introductionmentioning

confidence: 99%

Proactive Eavesdropping via Jamming in NOMA Network

Huu

Tran

et al. 2021

IEEE Access

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Recently, non-orthogonal multiple access (NOMA) has been considered as a promising technique in 5G network, and many investigations have addressed on the physical layer security to improve the security performance. In this paper, an alternative problem, where the eavesdropping process is considered as a legal activity, will be analyzed to track suspicious communications. More specifically, we study a wireless surveillance system in which the legitimate monitor is equipped with multi-antenna to overhear the messages between the suspicious receiver and the suspicious transmitter. Suspicious users are grouped into pairs and use the NOMA technique to transmit signals to a suspicious base station. Meanwhile, the legitimate monitor (LM) simultaneously transmits jamming signals, listens to suspicious links, decodeand-forward (DF) the eavesdropped information to the legitimate eavesdropper (LE). Based on the proposed mechanism, we investigate the power allocation policies for jamming signals of the legitimate monitor under deterministic and non-deterministic interference channel. Accordingly, we derive the closed-form expression of the successful eavesdropping probability for the best and the worst user to evaluate the system performance. Monte Carlo simulations are provided to verify our analytical results.

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Covert Surveillance via Proactive Eavesdropping Under Channel Uncertainty

Cited by 25 publications

References 46 publications

Design of a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface

Design of a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface

Covert Transmission Assisted by Intelligent Reflecting Surface

Proactive Eavesdropping via Jamming in NOMA Network

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