Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

Zheng, Tong-Xing; Wang, Huiming; Ng, Derrick Wing Kwan; Yuan, Jinhong

doi:10.1109/twc.2020.2973083

Cited by 26 publications

(11 citation statements)

References 39 publications

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“…1 In this work, it is assumed that the jamming signals are able to behave as a Gaussian pseudo-random sequence or utilize deterministic waveforms similar to the structure of the desired signal as in [22], [23], [24]. Then, all the jamming signals are known to the legitimate receivers and the transmitter, which means that the jamming signals do not affect the receiving quality of the legitimate users.…”

Section: Organizationmentioning

confidence: 99%

On Secure CDRT With NOMA and Physical-Layer Network Coding

Lei

Xusheng

Park

et al. 2023

IEEE Trans. Commun.

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This paper proposes a new scheme to enhance the secrecy performance of non-orthogonal multiple access (NOMA)based coordinated direct relay transmission (CDRT) systems with an untrusted relay. The physical-layer network coding (PNC) and the NOMA schemes are combined to improve spectrum efficiency. Furthermore, inter-user interference and friendly jamming signals are utilized to suppress the eavesdropping ability of the untrusted relay without compromising the acceptance quality of legitimate users. Specifically, the far user in the first slot and the near user in the second slot act as jammers that generate jamming signals to ensure secure transmissions of confidential messages. We investigate the secrecy performance of the NOMA-based CDRT systems with the PNC scheme and derive the closed-form expression for the ergodic secrecy sum rate. The asymptotic analysis at a high signal-to-noise ratio is performed to obtain more insights. Finally, simulation results are presented to demonstrate the proposed scheme's effectiveness and the theoretical analysis's correctness.

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Section: Organizationmentioning

confidence: 99%

On Secure CDRT With NOMA and Physical-Layer Network Coding

Lei

Xusheng

Park

et al. 2023

IEEE Trans. Commun.

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“…where ρ S = P S σ 2 and σ 2 signifies the noise power. 1 In this work, it is assumed that the jamming signals is able to be a Gaussian pseudo-random sequence, or utilizes deterministic waveforms similar to the structure of the desired signal as [20], [21], [22]. Then all the jamming signals are known for the legitimate receivers and the transmitter, which means that the jamming signals do not affect the receiving quality of the legitimate users.…”

Section: System Modelmentioning

confidence: 99%

On Secure NOMA-CDRT Systems with Physical Layer Network Coding

Lei¹,

Xusheng²,

Park³

et al. 2022

Preprint

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This paper proposes a new scheme to enhance the secrecy performance of a NOMA-based coordinated direct relay transmission system (NOMA-CDRT) with an untrusted relay. The physical-layer network coding and the non-orthogonal multiple access scheme are combined to improve the spectrum efficiency. Furthermore, the inter-user interference and friendly jamming signals are utilized to suppress the eavesdropping ability of the untrusted relay without affecting the acceptance quality of legitimate users. Specifically, the far user in the first slot and the near user in the second slot act as jammers to generate jamming signals to ensure secure transmissions of the confidential signals. We investigate the secrecy performance of the proposed scheme in NOMA-CDRT systems and derive the closedform expression for the ergodic secrecy sum rate. The asymptotic analysis at high signal-to-noise ratio is performed to obtain more insights. Finally, simulation results are presented to demonstrate the effectiveness of the proposed scheme and the correctness of the theoretical analysis.

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“…In this work, the AN impact on the system performance was analyzed and also the optimal blocklength that maximizes the secrecy throughput was found. The impact of finite blocklength secrecy coding on the design of secure transmission in a wiretap channel was explored in [15]. Specifically, an optimization problem was defined, which aimed at maximizing the secrecy throughput considering various blocklengths, code rates, and transmission policies.…”

Section: A Related Work and Motivationsmentioning

confidence: 99%

Performance Analysis of Short Packet Communications With Multiple Eavesdroppers

Ari

Thomos

Musavian

2022

IEEE Trans. Commun.

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This paper studies the performance of short packet communications in the presence of multiple eavesdroppers. We start our investigation by examining the fading wiretap channel, where the communication is overheard by multiple non-colluding single antenna eavesdroppers. A closed-form expression for the average secrecy throughput is derived, when the transmitter has a single antenna. The Monte-Carlo simulations show a close match of the analytical expression with the numerical results. Moreover, the optimal blocklength value that maximizes the secrecy throughput is determined, when the communication is observed by single and multiple eavesdroppers. We then extend our analysis for the case of a multiple-antenna transmitter and consider artificial noise (AN) to confuse the eavesdroppers. A closed-form expression for the average secrecy throughput is obtained for the scenario of a two-antenna transmitter and two eavesdroppers with a single antenna. The results demonstrate the validity of the approximation when compared with Monte-Carlo simulations. The results further reveal that an increased number of antennas at the transmitter is associated with higher average secrecy throughput and applying AN helps to eliminate the harm of the eavesdroppers.

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Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

Cited by 26 publications

References 39 publications

On Secure CDRT With NOMA and Physical-Layer Network Coding

On Secure CDRT With NOMA and Physical-Layer Network Coding

On Secure NOMA-CDRT Systems with Physical Layer Network Coding

Performance Analysis of Short Packet Communications With Multiple Eavesdroppers

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