Jamming-Assisted Proactive Eavesdropping in Decode-And-Forward Relaying Systems

Fang, Yukai; He, Yucheng; Zhang, Liangmei; Yang, Jianquan; Zhou, Lin

doi:10.1007/978-981-15-5879-5_14

Cited by 2 publications

(2 citation statements)

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“…Based on (28), since the radar detection performance is not the optimization objective, the probe signal is still allocated the exact power to reach the performance requirement in the jamming power maximization problem (17). However, (28a) shows a different result compared to (25a).…”

Section: Solution To the Jamming Power Maximization Problemmentioning

confidence: 99%

“…To overcome this limitation, proactive eavesdropping via jamming is developed as an effective and legal approach for government agencies to prevent crimes. Specifically, the legitimate monitor purposely controls the suspicious communication rate via jamming to improve the eavesdropping efficiency [24]- [28]. There has been a growing body of literature studying proactive eavesdropping under various system setups, including relay systems [29], multi-antenna systems [30]- [32], unmanned aerial vehicle (UAV) assisted systems [33], wireless powered communication systems [34], and intelligent reflecting surface (IRS) enhanced wireless systems [35].…”

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confidence: 99%

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Design and Performance Analysis of Wireless Legitimate Surveillance Systems with Radar Function

Zhang¹,

He²,

Cai³

et al. 2023

Preprint

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Integrated sensing and communication (ISAC) has recently been considered as a promising approach to save spectrum resources and reduce hardware cost. Meanwhile, as information security becomes increasingly more critical issue, government agencies urgently need to legitimately monitor suspicious communications via proactive eavesdropping. Thus, in this paper, we investigate a wireless legitimate surveillance system with radar function. We seek to jointly optimize the receive and transmit beamforming vectors to maximize the eavesdropping success probability which is transformed into the difference of signal-tointerference-plus-noise ratios (SINRs) subject to the performance requirements of radar and surveillance. The formulated problem is challenging to solve. By employing the Rayleigh quotient and fully exploiting the structure of the problem, we apply the divideand-conquer principle to divide the formulated problem into two subproblems for two different cases. For the first case, we aim at minimizing the total transmit power, and for the second case we focus on maximizing the jamming power. For both subproblems, with the aid of orthogonal decomposition, we obtain the optimal solution of the receive and transmit beamforming vectors in closed-form. Performance analysis and discussion of some insightful results are also carried out. Finally, extensive simulation results demonstrate the effectiveness of our proposed algorithm in terms of eavesdropping success probability.

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Section: Solution To the Jamming Power Maximization Problemmentioning

confidence: 99%