Optimal Power Allocation by Imperfect Hardware Analysis in Untrusted Relaying Networks

Kuhestani, Ali; Mohammadi, Abbas; Wong, Kai-Kit; Yeoh, Phee Lep; Moradikia, Majid; Khandaker, Muhammad R. A.

doi:10.1109/twc.2018.2822286

Cited by 38 publications

(51 citation statements)

References 43 publications

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“…Reference [42] provided a power-efficient resource allocation algorithm for secure wireless-powered communication networks with the hardware noises. Taking hardware imperfection into account, the authors of [43] proposed an optimal power allocation strategy to maximize the instantaneous secrecy rate of a cooperative amplify-and-forward (AF) relaying scheme. In [44], we calculated PNSC of multi-hop relay networks over Nakagami-m fading channels in presence of the hardware impairments.…”

mentioning

confidence: 99%

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

Tin

Nguyen

Duy³

et al. 2019

Entropy

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In this paper, we consider a cooperative multi-hop secured transmission protocol to underlay cognitive radio networks. In the proposed protocol, a secondary source attempts to transmit its data to a secondary destination with the assistance of multiple secondary relays. In addition, there exists a secondary eavesdropper who tries to overhear the source data. Under a maximum interference level required by a primary user, the secondary source and relay nodes must adjust their transmit power. We first formulate effective signal-to-interference-plus-noise ratio (SINR) as well as secrecy capacity under the constraints of the maximum transmit power, the interference threshold and the hardware impairment level. Furthermore, when the hardware impairment level is relaxed, we derive exact and asymptotic expressions of end-to-end secrecy outage probability over Rayleigh fading channels by using the recursive method. The derived expressions were verified by simulations, in which the proposed scheme outperformed the conventional multi-hop direct transmission protocol.

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mentioning

confidence: 99%

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

Tin

Nguyen

Duy³

et al. 2019

Entropy

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“…EVM determines the quality of radio frequency (RF) transceivers and is defined as the ratio of the average distortion magnitude to the average signal magnitude. Notably, the EVM measures the joint effect of different hardware imperfections and compensation algorithms and thus it can be measured directly in practice 14,28 . 3rd generation partnership project long‐term elvolution has EVM requirements in the range of k tx , k rx ∈ [0.08,0.175], where smaller values are needed to achieve higher spectral efficiencies.…”

Section: Signal and System Modelmentioning

confidence: 99%

“…In other words, examining the sign of Ω( τ ) is sufficient to investigate the monotonicity of ϕ ( τ ). Now, relying on corollary 1 in Reference 14 together with the sign of Ω( τ ) at the boundaries τ = τ min and τ = 1, the following proposition is presented to solve the maximization of ϕ ( τ ) in (21).Proposition Based on the sign of Ω( τ ) at the boundaries τ = τ min and τ = 1 , ϕ ( τ ) may be convex, concave or it is possible to be neither convex nor concave in the feasible set τ ∈ ( τ min , 1] . Following this fact, the optimal point is given by

τ_{normalopt}^{*} = \{\begin{matrix} T \{\max \{Ω (τ_{\min}), Ω (τ_{1}^{\circ}), Ω (τ_{2}^{\circ}), Ω (1)\}\} & ; Ω (τ_{\min}) . Ω (1) > 0 \\ T \{\max \{Ω (τ_{\min}), Ω (1)\}\} & ; Ω (τ_{\min}) < 0 & Ω (1) > 0 \\ τ_{1}^{\circ} & ; Ω (τ_{\min}) > 0 & Ω (1) < 0 \end{matrix}),

where

τ_{1}^{\circ} = - (ε_{2} + \sqrt{{ε_{2}}^{2} - 4 ε_{1} ε_{3}})

…”

Section: Sop Analysis and The Corresponding Opa Strategymentioning

confidence: 99%

Secure mm‐Wave communications with imperfect hardware and uncertain eavesdropper location

Mashdour

Moradikia

Yeoh

2020

Trans Emerging Tel Tech

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This article examines the secrecy performance of millimeter-wave (mm-Wave) communications with imperfect hardware and uncertain eavesdropper (Eve) location. We consider a multiple-antenna source communicating with a single-antenna destination using masked beamforming to transmit the information signals with artificial noise (AN) in the presence of a passive Eve. For this system, we derive new expressions for the secrecy outage probability (SOP) and secrecy throughput with mm-Wave multipath propagation under slow-fading channel conditions and hardware imperfections. Based on this, optimal power allocation (OPA) solutions are derived for the information and AN signals aimed at minimizing the SOP and maximizing the secrecy throughput. Our results reveal that it is non-trivial to achieve an OPA solution for the general scenario of imperfect hardware. We also highlight that our proposed masked beamforming with OPA scheme significantly enhances the secrecy throughput compared with the benchmark schemes of maximal-ratio transmission and equal power allocation.

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“…Mekkawy et al discussed the different relay selection schemes for untrusted two‐way AF relaying networks. The optimal power allocation was considered in Kuhestani et al, where all nodes experience hardware imperfections. In this scenario, the source and destination are equipped with large‐scale multiple antennas.…”

Section: Introductionmentioning

confidence: 99%

Secure AF relaying with efficient partial relay selection scheme

Chu

Liu

Nguyen

2019

Int J Communication

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Summary This paper evaluates the secrecy performance for the amplify‐and‐forward (AF) protocol with partial relay selection (PRS) schemes in the scenario of multiple independent but not necessarily identically distributed eavesdroppers. The secrecy performances of the first‐hop and second‐hop PRS schemes are revisited. Given the secrecy data rate, an efficient PRS scheme is presented, which selects the relay based on the instantaneous channel state information (CSI) of either the first or second hop according to the statistical CSI of two hops. The proposed PRS scheme provides the trade‐off between the two‐hop and one‐hop PRS criteria. Results show that the secrecy outage probability (SOP) performance of the proposed scheme is close to that of the conventional opportunistic relaying in the medium main‐to‐eavesdropper ratio (MER) regions. As for the intercept probability, the second‐hop scheme achieves the highest diversity order among PRS schemes and its performance depends on the overall eavesdroppers' behavior not on individual effects of the specific relay. The proposed criterion also outperforms the first‐hop PRS scheme. Simulation results finally substantiate the accuracy of the theoretical analysis.

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Optimal Power Allocation by Imperfect Hardware Analysis in Untrusted Relaying Networks

Cited by 38 publications

References 43 publications

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

Secure mm‐Wave communications with imperfect hardware and uncertain eavesdropper location

Secure AF relaying with efficient partial relay selection scheme

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