Security Analysis for Cognitive Radio Network with Energy Scavenging Capable Relay over Nakagami-m Fading Channels

Wireless Communications and Mobile Computing

Do-Dac

2021

Self Cite

This paper selects an unlicensed relay among available self-powered relays to not only remain but also secure information transmission from an unlicensed source to an unlicensed destination. The relays harvest energy in signals of the unlicensed source and the licensed transmitter. Then, they spend the harvested energy for their relaying operation. Conditioned on the licensed outage restriction, the peak transmission power restriction, Rayleigh fading, and the licensed interference, the current paper proposes an exact closed-form formula of the secrecy outage probability to quickly evaluate the secrecy performance of the proposed relay selection method in cognitive radio networks with energy harvesting. The proposed formula is corroborated by computer simulations. Several results illustrate the effectiveness of the relay selection in securing information transmission. Additionally, the security capability is saturated at large peak transmission powers or large preset outage probabilities of licensed users. Furthermore, the security capability depends on many specifications among which the power splitting ratio, the relays’ positions, and the time switching ratio can be optimally selected to obtain the best security performance.

Section: Illustrative Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Relay Selection for Security Improvement in Cognitive Radio Networks with Energy Harvesting

Wireless Communications and Mobile Computing

Do-Dac

2021

Self Cite

“…Currently, cheap energy harvesting (EH) circuits are integrated successfully in 5G/6G users [8]- [10]. Nonetheless, EH has been modelled to be linear for tractability in most performance analyses [11]- [14]. Realistically, EH circuits are composed of nonlinear components such as transistors, inductors, capacitors.…”

Section: A Backgroundsmentioning

confidence: 99%

Jammer Selection for Energy Harvesting-aided Non-Orthogonal Multiple Access: Performance Analysis

2023

Preprint

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Energy harvesting-aided non-orthogonal multiple access (NOMA) meets critical requirements of modern wireless networks in terms of spectral efficiency, communication reliability, and energy efficiency. However, information security for it has not received greatly attentions from both industry and academia. This paper proposes jammer selection to meliorate its security performance. To promptly assess the efficacy of the proposed jammer selection, we propose explicit formulas of connection/secrecy throughput and outage probability for both far and near users accounting for non-linear feature of energy harvesters. These formulas are corroborated by Monte-Carlo simulations and quickly generate innumerable results to reveal a significant/slight influence of energy harvesting nonlinearity on communications reliability/information security. In addition, there exist limits on target data/secrecy rates to avoid complete connection outage (i.e. connection outage probability is one) and achieve complete security (i.e. secrecy outage probability is one). Additionally, the proposed (NOMA-and-proposed jammer selection) scheme significantly outperforms its counterparts (NOMA-and-random jammer selection and orthogonal multiple access-and-proposed jammer selection) in terms of both security and reliability. Nevertheless, there is a trade-off between reliability and security. Notably, the proposed scheme obtains optimum security/reliability performance with proper selection of time/power splitting coefficient.

“…Presently, 5G/6G devices deploy successfully cheap energy harvesting (EH) integrated circuits [ 5 , 6 , 7 , 8 ]. Nonetheless, a plurality of performance analyses pertinent to RF EH has featured EH to be linear for simplicity [ 9 , 10 , 11 , 12 ]. Practically, EH circuits are constituted by nonlinear elements, viz.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Wireless Communications with Nonlinear Energy Harvesting under Hardware Impairment and κ-μ Shadowed Fading

Le-Thanh

2023

Sensors

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This paper improves energy efficiency and communications reliability for wireless transmission under κ-μ shadowed fading (i.e., integrating all channel impairments including path loss, shadowing, fading) and hardware impairment by employing a nonlinear energy harvester and multi-antenna power transmitter. To this end, this paper provides explicit formulas for outage probability. Numerous results corroborate these formulas and expose that energy-harvesting nonlinearity, hardware impairment, and channel conditions drastically deteriorate system performance. Notwithstanding, energy-harvesting nonlinearity influences system performance more severely than hardware impairment. In addition, desired system performance is accomplished flexibly and possibly by choosing a cluster of specifications. Remarkably, the proposed communications scheme obtains the optimal performance with the appropriate selection of the time-splitting factor.