Covert Communication in Uplink NOMA Systems Under Channel Distribution Information Uncertainty

Duan, Zhengxiang; Yang, Xin; Gong, Yanyun; Wang, Dawei; Wang, Ling

doi:10.1109/lcomm.2023.3255838

Cited by 11 publications

(2 citation statements)

References 13 publications

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“…They are used in scenarios where regular communication is too exposed and the use of encryption alone is not sufficient 1 . It needs to have a very low probability of being detected by the enemy, 2,3 while achieving a certain data rate at the target receiver 4 . Its considered a advanced security technology 5 .…”

Section: Introductionmentioning

confidence: 99%

A generalized detection framework for covert timing channels based on perceptual hashing

Zhuang,

Chen,

Tian

2024

Trans Emerging Tel Tech

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Network covert channels use network resources to transmit data covertly, and their existence will seriously threaten network security. Therefore, an effective method is needed to prevent and detect them. Current network covert timing channel detection methods often incorporate machine learning methods in order to achieve generalized detection, but they consume a large amount of computational resources. In this paper, we propose a generalized detection framework for covert channels based on perceptual hashing without relying on machine learning methods. And we propose a one‐dimensional data feature descriptor for feature extraction of perceptual hash for the data characteristics of covert timing channels. We first generate the hash sequence of the corresponding channel to get the average hash, which is used for comparison in the test phase. The experimental results show that the feature descriptor can capture the feature differences of one‐dimensional data well. When compared to machine learning methods, this perceptual hashing algorithms enable faster traffic detection. Meanwhile, our method is able to detect the effectiveness with the smallest coverage window compared with the latest solutions. Moreover, it exhibits robustness in jitter network environment.

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Section: Introductionmentioning

confidence: 99%

A generalized detection framework for covert timing channels based on perceptual hashing

Zhuang,

Chen,

Tian

2024

Trans Emerging Tel Tech

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“…Inspired by this idea, the optimization algorithm has been designed for the intelligent reflecting surface (IRS)-assisted NOMA systems to maximize the covert rates by jointly optimizing the transmit power and the IRS reflect beamforming [16]. Similarly, the covert communication scheme was developed for NOMA systems under uncertain channel distribution information to maximize the expected covert rate [17]. In addition, an iterative algorithm was proposed in [18] for UAV-assisted NOMA communication to jointly optimize time slots, transmit power, and trajectories, which ultimately improves the covert rate of UAV-assisted data transmission.…”

Section: Introductionmentioning

confidence: 99%

On Joint Optimization of UAV-Assisted Covert Communication Systems with NOMA for Hydropower Internet of Things

Le,

Xu,

Wang

et al. 2023

Drones

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The intelligent terminals deployed in hydropower IoT can quickly sense the status of hydropower equipment, thus improving the efficiency of system control and operation. However, communication security between the base station and intelligent terminals challenges the IoT hydropower plant. In this paper, we propose a UAV-assisted covert communication system (CCS), where a UAV acts as the base station to provide communication service to ground terminals monitored by malicious users. To improve access effectiveness, we adopt non-orthogonal multiple access (NOMA) for intelligent terminals to access the hydropower IoT. Since two devices can synchronously access the communication system with the NOMA scheme, we select one terminal to receive covert messages and the other to interfere with the malicious users to detect confidential communications. To maximize the covert rate, we formulate the optimization problem that jointly optimizes the transmit power, the altitude of the UAV, and trajectory under the constraints of covertness and the finite length of the transmission message block. Additionally, we transform the optimization problem into a geometric planning one, which is solved by a developed sequential geometric planning (SGP) approximation algorithm. Simulation results show the proposed algorithm can improve the covert rate compared to the traditional methods.

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Covert NOMA in Uplink: A Two-User Framework

Sherazi,

Kim,

Khokhar

2024

ICC 2024 - IEEE International Conference on Communications

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Covert Communication in Uplink NOMA Systems Under Channel Distribution Information Uncertainty

Cited by 11 publications

References 13 publications

A generalized detection framework for covert timing channels based on perceptual hashing

A generalized detection framework for covert timing channels based on perceptual hashing

On Joint Optimization of UAV-Assisted Covert Communication Systems with NOMA for Hydropower Internet of Things

Covert NOMA in Uplink: A Two-User Framework

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