A Study of Physical Layer Security in SWIPT-Based Decode-and-Forward Relay Networks with Dynamic Power Splitting

Phan, Van-Duc; Nguyen, Tan N.; Le, Anh Vu; Vozňák, Miroslav

doi:10.3390/s21175692

Cited by 10 publications

(11 citation statements)

References 38 publications

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“…This involves two phases: the first phase is the same as the DF scheme as demonstrated in Figure 3; in the 2nth time slot, the R 1 , R 2 , and E signals are received, and the relevant equations are represented by ( 5)- (7). In the next time slot, the relay sends the amplified signals to the destination using the Amplify and Forward Scheme and by jamming the signal source to the eavesdropper.…”

Section: Amplify and Forward (Af) Relaying Schemementioning

confidence: 99%

“…The nodes in communication networks are powered by putting separate batteries inside them; however, in some circumstances, replacing or recharging those batteries is not recommended [4]. The Energy-Harvesting (EH) approach [5][6][7] can be used to solve this problem. It also contributes to the improved reliability and low-maintenance monitoring of the system.…”

Section: Introductionmentioning

confidence: 99%

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Physical Layer Secrecy by Power Splitting and Jamming in Cooperative Multiple Relay Based on Energy Harvesting in Full-Duplex Network

et al. 2021

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In this article, we investigated the secrecy performance of a three-hop relay network system with Power Splitting (PS) and Energy Harvesting (EH). In the presence of one eavesdropper, a signal is transferred from source to destination with the help of a relay. The source signal transmits in full-duplex (FD) mood, jamming the relay transfer signals to the destination. The relay and source employ Time Switching (TS) and Energy Harvesting (EH) techniques to obtain the power from the power beacon. In this study, we compared the Secrecy Rate of two Cooperative Schemes, Amplify and Forward (AF) and Decode and Forward (DF), for both designed systems with the established EH and PS system. The Secrecy Rate was improved by 50.5% in the AF scheme and by 44.2% in the DF scheme between the relay and eavesdropper at 40 m apart for the proposed system in EH and PS. This simulation was performed using the Monto Carlo method in MATLAB.

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Section: Amplify and Forward (Af) Relaying Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physical Layer Secrecy by Power Splitting and Jamming in Cooperative Multiple Relay Based on Energy Harvesting in Full-Duplex Network

et al. 2021

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“…For example, privacy information in health care, the journey or location of vehicles in transportation and the position or confidential information of the targets need to be protected. Regarding security protection for wireless communications, several conventional approaches, such as cryptography [ 1 ] or physical layer security [ 2 , 3 , 4 ], have been implemented. These methods only target preventing the confidential content of messages from being stolen by eavesdroppers.…”

Section: Introductionmentioning

confidence: 99%

Hiding Messages in Secure Connection Transmissions with Full-Duplex Overt Receiver

Tan

Nguyen

Fiche

et al. 2022

Sensors

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This paper considers hiding messages in overt transmissions with a full-duplex receiver, which emits artificial noise to secure its transmission connection while a transmitter opportunistically sends a covert message to a covert user. The warden’s uncertainties in decoding the overt message and artificial-noise-received power are exploited to hide messages. Then, the covert throughput accompanied with the warden’s average detection error probability are determined. The results show that increasing the transmit power of artificial noise or improving secure connection at the overt user will improve the covert performance. The results also show that the covert performance is improved when the self-interference cancellation is improved at the full-duplex receiver or when the warden is located close to the full-duplex receiver, indicating the positive impact of the overt performance on the covert performance.

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“…Practical IoT devices do not support complex encryption for information security, while physical secrecy is promising because the complex part is with the base station [ 13 ]. Basically, the signal-to-noise ratio (SNR) at a legitimate receiver must be higher than that at eavesdroppers to obtain the rate, called secrecy rate, that only the legitimate receiver can decode the information [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Wireless Information and Power Transfer in Multi-User OFDMA Networks with Physical Secrecy

Sangmahamad

Woradit

Saengudomlert

2022

Sensors

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This paper considers simultaneous wireless information and power transfer (SWIPT) from a base station to multiple Internet of Things (IoT) nodes via orthogonal frequency-division multiple access (OFDMA), where every node can eavesdrop on the subcarriers allocated to other nodes. Application layer encryption is unsuitable for IoT nodes relying on energy harvesting, and physical layer secrecy should be deployed. The different channels among users on every subcarrier can be exploited to obtain physical layer secrecy without using artificial noise. We propose an algorithm to maximize the secrecy rate of IoT nodes by jointly optimizing the power splitting ratio and subcarrier allocation. For fairness, the lowest total secrecy rate among users is maximized. Through simulations, the proposed algorithm is compared with the minimum effort approach, which allocates each subcarrier to the strongest node and selects the minimum sufficient power splitting ratio. The obtained secrecy rate is 3 times (4.5 over 1.5 bps/Hz) higher than that of the minimum effort approach in every case of parameters: the base station’s transmit power, the minimum harvested energy requirement of an IoT node and the energy harvesting efficiency.

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A Study of Physical Layer Security in SWIPT-Based Decode-and-Forward Relay Networks with Dynamic Power Splitting

Cited by 10 publications

References 38 publications

Physical Layer Secrecy by Power Splitting and Jamming in Cooperative Multiple Relay Based on Energy Harvesting in Full-Duplex Network

Physical Layer Secrecy by Power Splitting and Jamming in Cooperative Multiple Relay Based on Energy Harvesting in Full-Duplex Network

Hiding Messages in Secure Connection Transmissions with Full-Duplex Overt Receiver

Simultaneous Wireless Information and Power Transfer in Multi-User OFDMA Networks with Physical Secrecy

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