Secure Communication for Millimeter-Wave Systems with Randomly Located Non-Colluding Eavesdroppers

Ragheb, Mohammad; Hemami, Seyed Mostafa Safavi

doi:10.1109/icee50131.2020.9260703

Cited by 4 publications

(5 citation statements)

References 21 publications

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“…During the broadcasting phase, S transmits its message at a power of λP and concurrently radiates AN to confuse the Eves at a power of (1−λ)P , where λ∈ (0, 1]. Simultaneously, the destination radiates another type of AN at power ηP , where η ∈ [0, 1] is the power allocation factor of D. The AN generated by the source is transmitted in the null space of the selected relay's channel to avoid contaminating the desired channel [1], [17], [25], and [26]. This method is particularly beneficial, when the Eve's instantaneous CSI is unknown.…”

Section: Destination and Source Based Cooperative Jamming (Ds-bcj)mentioning

confidence: 99%

“…Additionally, in [25] an OPA scheme was designed for mmWave untrusted relaying networks by only considering the LoS component. Furthermore, Ragheb et al [1] optimized the power allocation for increasing the ESR in the presence of shadow fading in a mmWave network, when a BS transmits confidential messages to a mobile user with the aid of an untrusted relay in the presence of NCEs and obstacles. However, the impact of OPA on a mmWave cellular network relying on multiple untrusted relays and considering both LoS/NLoS effects has not been reported in the open literature.…”

Section: Introductionmentioning

confidence: 99%

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On the Physical Layer Security of Untrusted Millimeter Wave Relaying Networks: A Stochastic Geometry Approach

Ragheb

Hemami

Kuhestani

et al. 2022

IEEE Trans.Inform.Forensic Secur.

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The physical layer security (PLS) of millimeter wave (mmWave) communication systems is investigated, where the secure source-to-destination communication is assisted by an untrusted relay selected from a group of them and there are also several passive eavesdroppers (Eves) in the network. In the considered system model, while the distributions of the untrusted relays and Eves follow a homogeneous Poisson Point Process (PPP). To maximize the instantaneous secrecy rate, a novel joint relay selection and power allocation (JRP) method is developed where the destination and source aim for jamming the reception of both the untrusted relays and passive Eves. New expressions of the optimal power allocation (OPA) are derived for both noncolluding Eves (NCE) and colluding Eves (CE). Subsequently, by considering the impact of potential blockages, new closedform equations are derived for analyzing the system's ergodic secrecy rate (ESR) and secrecy outage probability (SOP) for transmission over fading mmWave channels. Finally, numerical examples are provided for demonstrating the superiority of our proposed JRP method over the relevant benchmarks found in the literature. Interestingly, the ESR increases with the density of untrusted relays for both the NCE and CE scenarios, which is a benefit of the improved probability of selecting a relay with a stronger second-hop channel. Furthermore, in the low transmit power regime, employing relatively low mmWave frequencies achieves better ESR, while in the high transmit power regime, high mmWave frequencies provide higher ESR.

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Section: Destination and Source Based Cooperative Jamming (Ds-bcj)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Physical Layer Security of Untrusted Millimeter Wave Relaying Networks: A Stochastic Geometry Approach

Ragheb

Hemami

Kuhestani

et al. 2022

IEEE Trans.Inform.Forensic Secur.

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“…In [50], [51], the authors analyzed the secrecy performance with an assumption of non-colluding eavesdroppers. To compare the detrimental effect caused by colluding and non-colluding eavesdroppers on the secure wireless network, the authors of [52]- [54] considered both eavesdropping scenarios and concluded that the increasing number of eavesdroppers degrades the security of the system whereas colluding eavesdroppers have the most harmful effects.…”

Section: A Backgroundmentioning

confidence: 99%

Physical-Layer Security in Mixed UOWC-RF Networks With Energy Harvesting Relay Against Multiple Eavesdroppers

Ghosh,

Kumar Kundu,

Ibrahim

et al. 2024

IEEE Open J. Commun. Soc.

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In this study, physical layer security (PLS) in a dual-hop underwater optical wireless communication (UOWC)-radio frequency (RF) network under the intruding attempts of multiple eavesdroppers via RF links is considered. An intermediate decode-and-forward (DF) relay node between an underwater source and a destination transforms the optical signal into an electrical form and forwards it to the destination node with the help of harvested energy by the relay from an integrated power beacon within the system. The source-to-relay link, i.e., a UOWC link, is assumed to follow a mixture of exponential generalized Gamma turbulence with pointing error impairments whereas all the remaining links, i.e., RF links, are assumed to undergo κ − µ shadowed fading. Here, two eavesdropping scenarios are considered depending on the types of intruders, i.e., colluding (Scenario-I) and non-colluding (Scenario-II) eavesdropping operations. The analytical expressions of secrecy outage probability (SOP), probability of strictly positive secrecy capacity (SPSC), and effective secrecy throughput (EST) are derived for each scenario. Furthermore, the impacts of UOWC and RF channel parameters as well as detection techniques on secrecy capacity are demonstrated. A comparative study between two scenarios demonstrates that the collusion between the eavesdroppers imposes the most harmful threat on secrecy throughput but a better secrecy level can be attained by adopting diversity at the destination and power beacon nodes along with heterodyne detection rather than intensity modulation and direct detection technique. Finally, all the derived expressions are verified with the numerical results.INDEX TERMS Effective secrecy throughput, underwater optical communication, secure outage probability, energy harvesting, colluding and non-colluding eavesdroppers.

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“…1 Directivity 2 Intelligent Reflecting Surface 3 Half Duplex (HD) 4 Full Duplex (FD) 5 Physical Layer Security 6 Unmanned Aerial Vehicle 7 Ergodic Secrecy Rate 8 Artificial Noise 9 Optimal power allocation 10 Cumulative Distribution Function 11 Large scale antennas 12 Uniform linear array 13 Signal-to-interference-plus-noise ratio 14 Joint optimal power allocation and beamforming design 15 Semi-convex 16 Azimuth angle of arrival (AoA) 17 Azimuth angle of departure (AoD)…”

Section: ‫زیر‬ ‫نویس‬ ‫ها‬mentioning

confidence: 99%

Joint Beamforming and Artificial Noise Design in Secure Millimeter-wave Communications with the Aid of Intelligent Reflecting Surfaces

Ragheb

Kuhestani²,

Hemami³

2022

Journal of Iranian Association of Electrical and Electronics En

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Secure Communication for Millimeter-Wave Systems with Randomly Located Non-Colluding Eavesdroppers

Cited by 4 publications

References 21 publications

On the Physical Layer Security of Untrusted Millimeter Wave Relaying Networks: A Stochastic Geometry Approach

On the Physical Layer Security of Untrusted Millimeter Wave Relaying Networks: A Stochastic Geometry Approach

Physical-Layer Security in Mixed UOWC-RF Networks With Energy Harvesting Relay Against Multiple Eavesdroppers

Joint Beamforming and Artificial Noise Design in Secure Millimeter-wave Communications with the Aid of Intelligent Reflecting Surfaces

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