Secrecy Capacity of Hybrid RF/VLC DF Relaying Networks with Jamming

Al-Khori, Jaber; Nauryzbayev, Galymzhan; Abdallah, Mohamed; Hamdi, Mounir

doi:10.1109/iccnc.2019.8685634

“…In [183], [236], the achievable secrecy capacity of DFbased hybrid RF/VLC was investigated. This paper considers two stages for achieving the required secrecy capacity.…”

Section: • Secrecy Outage Probability (Sop) and Achieved Secrecy Ratementioning

confidence: 99%

“…Taking advantage of the small coverage of VLC networks and the low penetration features (high physical layer security feature), studies such as [141], [167], [168], [174], [183], [188], [189], [236] used a hybrid network of RF/VLC systems to increase the PHY security of the network. In [141], the average consumed power by the hybrid RF/VLC network was minimized given a certain required secrecy rate via power allocation and beamforming algorithms.…”

Section: E Current Applications For Hybrid Systemsmentioning

confidence: 99%

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

Abuella

¹

,

Elamassie

²

,

Uysal

³

et al. 2021

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Wireless communications refer to data transmissions in unguided propagation media through the use of wireless carriers such as radio frequency (RF) and visible light (VL) waves. The rising demand for high data rates, especially, in indoor scenarios, overloads conventional RF technologies. Therefore, technologies such as millimeter waves (mmWave) and cognitive radios have been adopted as possible solutions to overcome the spectrum scarcity and capacity limitations of the conventional RF systems. In parallel, visible light communication (VLC) has been proposed as an alternative solution, where a light source is used for both illumination and data transmission. In comparison to RF links, VLC links present a very high bandwidth that allows much higher data rates. VLC exhibits also immunity to interference from electromagnetic sources, has unlicensed channels, is a very low power consumption system, and has no health hazard. VLC is appealing for a wide range of applications including reliable communications with low latency such as vehicle safety communication. Despite the major advantages of VLC technology and a variety of its applications, its use has been hampered by its cons such as its dependence on a line of sight connectivity. Recently, hybrid RF/VLC systems were proposed to take advantage of the high capacity of VLC links and better connectivity of RF links. Thus, hybrid RF/VLC systems are envisioned as a key enabler to improve the user rates and mobility on the one hand and to optimize the capacity, interference and power consumption of the overall network on the other hand. This paper seeks to provide a detailed survey of hybrid RF/VLC systems. This paper represents an overview of the current developments in the hybrid RF/VLC systems, their benefits and limitations for both newcomers and expert researchers. INDEX TERMS Radio frequency (RF), visible light communication (VLC), hybrid RF/VLC, wireless fidelity (Wi-Fi), hybrid networks, hybrid RF/VLC environments.

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“…In [143], [184], the achievable secrecy capacity of DFbased hybrid RF/VLC was investigated. This paper considers two stages for achieving the required secrecy capacity.…”

Section: • Area Spectral Efficiency (Ase)mentioning

confidence: 99%

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

Abuella,

Elamassie,

Uysal

et al. 2020

Preprint

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Wireless communications refer to data transmissions in unguided propagation media through the use of wireless carriers such as radio frequency (RF) and visible light (VL) waves. The rising demand for high data rates, especially, in indoor scenarios, overloads conventional RF technologies. Therefore, technologies such as millimeter waves (mmWave) and cognitive radios have been adopted as possible solutions to overcome the spectrum scarcity and capacity limitations of the conventional RF systems. In parallel, visible light communication (VLC) has been proposed as an alternative solution, where a light source is used for both illumination and data transmission. In comparison to RF links, VLC links present a very high bandwidth that allows much higher data rates. VLC exhibits also immunity to interference from electromagnetic sources, has unlicensed channels, is a very low power consumption system, and has no health hazard. VLC is appealing for a wide range of applications including reliable communications with low latency such as vehicle safety communication. Despite the major advantages of VLC technology and a variety of its applications, its use has been hampered by its cons such as its dependence on a line of sight connectivity. Recently, hybrid RF/VLC systems were proposed to take advantage of the high capacity of VLC links and better connectivity of RF links. Thus, hybrid RF/VLC systems are envisioned as a key enabler to improve the user rates and mobility on the one hand and to optimize the capacity, interference and power consumption of the overall network on the other hand. This paper seeks to provide a detailed survey of hybrid RF/VLC systems. This paper represents an overview of the current developments in the hybrid RF/VLC systems, their benefits and limitations for both newcomers and expert researchers.

show abstract

“…In recent years, Visible Light Communication (VLC) gained prominence thanks to its ubiquitous capacity to yield high data rates with utilization of energy-efficient light-emitting diodes (LEDs) [2] and solve spectrum scarcity by exploiting visible spectrum [3]. However, the VLC coverage is limited because it requires line-of-sight between the transmitter and the receiver [4]. To overcome this challenge, VLC is used in conjunction with Radio Frequency This work is an extended version of a conference paper which was published in the Proceedings of IEEE International Conference on Communications (ICC) 2021 [1].…”

Section: Introductionmentioning

confidence: 99%

Distributed DRL-Based Downlink Power Allocation for Hybrid RF/VLC Networks

Çiftler

¹

,

Alwarafy

²

,

Abdallah

³

2022

Self Cite

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Hybrid radio frequency (RF) and visible light communication (VLC) networks can provide high throughput and energy efficiency with VLC access points (APs) while ensuring ubiquitous coverage with RF APs. Due to dynamic channel conditions and limited resources, the hybrid RF/VLC networks' resource allocation problem is complex and challenging. Conventional resource allocation techniques fail to overcome these challenges. Heuristic methods can solve high complexity problems; however, they are not robust against changes such as dynamic channel conditions or alternating user requirements. Heuristic methods require centralized control for stability which adds communication overhead between APs. Deep Reinforcement Learning (DRL) based solutions can solve high complexity, dynamic channel conditions, and alternating user requirements while not requiring centralized control. In this paper, we formulate a distributed downlink power allocation problem to optimize the transmit power for users to reach target data rates in hybrid RF/VLC networks. Then, we propose a distributed DRL-based algorithm Deep Deterministic Policy Gradient (DDPG), to solve the formulated computationally-intensive problem. We implement a simulation environment to benchmark the proposed distributed DRL-based method against other methods such as Q-Learning (QL) and Deep Q-Networks (DQN), and centralized heuristic power allocation algorithms. Our simulation results show that the distributed DDPG-based algorithm learns to adapt against changes in the channel or user requirements, while centralized Genetic Algorithm and Particle Swarm Optimization-based algorithms fail to endure against these changes even with coordination between APs. Additionally, we quantify the performance of the DDPG-based algorithm to prevail amid DRL-based algorithms at the expense of higher implementation complexity.

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Secrecy Capacity of Hybrid RF/VLC DF Relaying Networks with Jamming

Cited by 12 publications

References 26 publications

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

Distributed DRL-Based Downlink Power Allocation for Hybrid RF/VLC Networks

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