Multi-Antenna Jamming in Covert Communication

Shmuel, Ori; Cohen, Asaf; Gurewitz, Omer

doi:10.1109/tcomm.2021.3067386

Cited by 32 publications

(12 citation statements)

References 38 publications

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“…The parameters are initialized with "kaiming". 1 The MAML main network learning rate is 0.0002. The subtask learning rate is 0.04.…”

Section: A Recognition Performance Based On Sub-network Learningmentioning

confidence: 99%

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Distributed Few-Shot Learning for Intelligent Recognition of Communication Jamming

Liu

et al. 2022

IEEE J. Sel. Top. Signal Process.

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“…The parameters are initialized with "kaiming". 1 The MAML main network learning rate is 0.0002. The subtask learning rate is 0.04.…”

Section: A Recognition Performance Based On Sub-network Learningmentioning

confidence: 99%

“…In order to evaluate the influence of the dense block growth rate on the recognition performance of the sub-network, the 1 Pytorch framework uses the kaiming normal distribution to initialize the convolutional layer parameters by default.…”

Section: A Recognition Performance Based On Sub-network Learningmentioning

confidence: 99%

Distributed Few-Shot Learning for Intelligent Recognition of Communication Jamming

Liu

et al. 2022

IEEE J. Sel. Top. Signal Process.

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“…The performance of covert communication can be improved by letting a friendly jammer deliberately broadcast jamming signal to degrade the detection performance of the adversary [20]- [24]. Remarkably, [20] theoretically showed the existence of constant covert communication rates provided that the adversary does not know the jamming power or the instantaneous realization of the jamming channel.…”

Section: A Wireless Covert Communicationmentioning

confidence: 99%

“…In [22], the covert throughput in a random network was studied, wherein the jammer who is closest to the adversary broadcasts jamming signal. In [23] and [24], a friendly jammer was assumed to have multiple antennas and use beamforming to maximize its ability to degrade the detection performance of the adversary.…”

Section: A Wireless Covert Communicationmentioning

confidence: 99%

Jamming Aided Covert Communication with Multiple Receivers

Huang

Deng

Wang

2021

Preprint

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We consider that a transmitter covertly communicates with multiple receivers under the help of a friendly jammer. The messages intended for different receivers are transmitted in mutually orthogonal frequency bands. An adversary observes all these frequency bands aiming at detecting whether or not communication occurs, while the friendly jammer broadcasts jamming signals to degrade the detection performance of the adversary. We consider a block Rayleigh fading channel model and evaluate the performance of covert communication in two situations: 1) the wireless channels vary slowly such that the transmission ends within one channel coherent time block, and 2) the wireless channels vary fast such that the wireless channels have changed several times before the whole transmission is finished. In the former case, subject to a covertness constraint, we maximize the sum of the effective rates by optimizing the transmit power allocation and the transmission rate for each receiver. In the latter case, we take the channel training process into consideration, and subject to a covertness constraint, we maximize the sum of the ergodic rates by optimizing the power allocation and the pilot length. Though both of the two optimization problems are non-convex, we presented methods to find their global optimal solutions. Besides, we also present methods to find sub-optimal solutions with lower computational complexities. Numerical results are presented to evaluate the performance under the two situations.

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“…As for beamforming technology, it is rarely used. In [35], the enhancement effect of multiantenna AN nodes on covert performance is studied, and it is pointed out that directional beamforming is the optimal AN strategy. In fact, how to use multiantenna technology to improve spectrum efficiency so as to bring more security gains in covert communication systems and how to design more appropriate multiantenna scenarios to make effective covert rate higher are necessary to be considered.…”

Section: Introductionmentioning

confidence: 99%

Beamforming Design and Covert Performance Analysis for Full‐Duplex Multiantenna System

et al. 2021

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In this work, a wireless covert communication system with full-duplex (FD) multiantenna receiver is considered. In order to improve the convert performance of the wireless communication system in the FD mode, a scheme based on selection combining/zero forcing beamforming (SC/ZFB) is proposed. More specifically, a covert message receiver with a FD multiantenna uses the zero forcing beamforming method to transmit randomly varying noise power to the adversary while receiving covert information from the sender. Firstly, we derive the optimal detection threshold and the corresponding closed expression of the minimum detection error rate of the warden. Secondly, the transmission interruption probability is explored to measure the communication reliability between the sender and the receiver of the covert message. Finally, the throughput performance of the covert communication system is analyzed under random geometry. Our analysis shows that the proposed SC/ZFB scheme can achieve the positive effective convert rate while interfering with the detection of the warden as much as possible. It is worth noting that the increase of the number of antennas and the power of covert message transmission can improve the convert performance of the system.

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Multi-Antenna Jamming in Covert Communication

Cited by 32 publications

References 38 publications

Distributed Few-Shot Learning for Intelligent Recognition of Communication Jamming

Distributed Few-Shot Learning for Intelligent Recognition of Communication Jamming

Jamming Aided Covert Communication with Multiple Receivers

Beamforming Design and Covert Performance Analysis for Full‐Duplex Multiantenna System

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