A Multicast Technique for Fixed and Mobile Optical Wireless Backhaul in 5G Networks

Atakora, Michael; Chenji, Harsha

doi:10.1109/access.2018.2832980

Cited by 16 publications

(14 citation statements)

References 81 publications

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“…The critical aspect in the success of futuristic communication technologies and standards will be determined by the ease of their convergence with existing high-speed access networks, see [25]- [28]. In this direction it will be critical to highlight the works of, see [9], [28]- [29], where authors have put forward the idea of complimenting FSO systems with wavelength division multiplexing (WDM) to attain twin goals.…”

Section: Problem Statementmentioning

confidence: 99%

“…However, it is imperative to understand here that while the accuracy of the lognormal distribution is limited to weak turbulence regimes, K-distribution can characterize severe turbulence conditions only, see [1], [5]. As per experimental and analytical literature, see [23]- [25], Gamma-Gamma distribution can model weak to strong turbulence conditions with significant accuracy. For channels characterized using Gamma-Gamma channel distribution, the probability density function (PDF) of received irradiance I is a function of two independent Gamma distributions f (x) and f (y) which are in turn related to the presence of small and large turbulence eddies, respectively.…”

Section: Turbulence Theorymentioning

confidence: 99%

“…C 2 n is refractive index structure parameter and symbolically denotes turbulence severity of the propagating medium. More commonly, the numerical values of C 2 n as 10 −13 m −2/3 , 10 −15 m −2/3 , 10 −17 m −2/3 are associated with strong, moderate and weak channel turbulent conditions, respectively, see [14], [24]- [25]. For a multi-hop FSO link operating under adverse atmospheric conditions, the probability density functions for Fig.…”

Section: Turbulence Theorymentioning

confidence: 99%

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Multi-Hop Relay Based Free Space Optical Communication Link for Delivering Medical Services in Remote Areas

et al. 2020

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Free Space Optical (FSO) communication links are although extremely vulnerable to atmospheric adversities, multi-hop relay transmission can however, significantly improve the link performance and reliability. This paper proposes 120 Gbps DP-16 QAM modulated multi-hop serial FSO link with coherent reception for delivering medical consultation services in remote and isolated locations. Considering the current situation wherein pandemic of highly infectious nature, COVID-19 has affected millions of people globally; doctors can use the proposed high-speed architecture for "contact-less" supervision of quarantined patients and suspects through video conferencing. Each relay terminal uses an all-optical amplify-and-forward technique with Erbium-doped fiber amplifier (EDFA) and gain optimization as its core elements. As a possible last-mile application for delivering medical/health care services, the proposed link has been evaluated for reliability by exposing the link to varied atmospheric conditions. Our results reveal that at target BER of 10 −5 , the useful communication link range of proposed multi-hop link increments by 1.8 kms as compared to direct link that operates under similar channel conditions. Furthermore, compared to results from recent literature on high-speed FSO [30], the proposed link shows enhancement in link range by approximately 0.7 km. The analysis also reveals that as the number of relay nodes increases, the error performance of the link for different atmospheric conditions approaches a state of convergence.

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Section: Problem Statementmentioning

confidence: 99%

Section: Turbulence Theorymentioning

confidence: 99%

Section: Turbulence Theorymentioning

confidence: 99%

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Multi-Hop Relay Based Free Space Optical Communication Link for Delivering Medical Services in Remote Areas

et al. 2020

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“…Depending on the nature of the Poisson distribution, λ MG also represents the average number of MG users per unit area. When the area of ERSR is equal to πr 2 n , the MG user density in this area is…”

Section: Average Number Of Ur In the Ersr Of One Usumentioning

confidence: 99%

“…It has been estimated that mobile data will grow tenfold in the next five years [1]. The upcoming 3GPP 5G standard is designed to provide several gigabits per second throughput to users [2]. Therefore, limited spectrum resources need to be utilized more efficiently.…”

Section: Introductionmentioning

confidence: 99%

A Range-Division User Relay Selection Scheme and Performance Analysis in NOMA-based Cooperative Opportunistic Multicast Systems

Zhang

Wang

et al. 2019

Electronics

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The original user relay (UR) selection scheme of non-orthogonal multiple access-based cooperative opportunistic multicast scheme, which realizes inter-group cooperation between two multicast groups, ignores the distribution trend of candidate UR in the cell and adopts fixed efficient relay selection range (ERSR) to select UR. It results in high UR selection ratio. Then the coverage efficiency, defined as the ratio of successfully received users to URs, is low. To tackle this problem, a range-division user relay (RDUR) selection scheme is proposed in this paper. Firstly, it divides the circular coverage range of base station into several continuous annular areas (AAs). Secondly, different ERSRs are assigned to unsuccessfully received users in different AAs. Under different ERSR assignments, the performances of UR selection ratio and coverage ratio are analyzed. Lastly, the radius set of ERSR that optimizes system coverage efficiency is used to perform UR selection. From simulation results, with different radius sets, analytical results of UR selection ratio and coverage ratio match well with their simulated ones. It is proved that ERSR allocation affects UR selection ratio and coverage ratio. With RDUR scheme, coverage efficiency increases by at least 14% and capacity efficiency has also been improved.

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Challenges, Standards, and Solutions for Secure and Intelligent5GInternet of Things (IoT) Scenarios

Malik¹,

Bhushan

2022

Smart and Sustainable Approaches for Optimizing Performance of Wireless Networks

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A Multicast Technique for Fixed and Mobile Optical Wireless Backhaul in 5G Networks

Cited by 16 publications

References 81 publications

Multi-Hop Relay Based Free Space Optical Communication Link for Delivering Medical Services in Remote Areas

Multi-Hop Relay Based Free Space Optical Communication Link for Delivering Medical Services in Remote Areas

A Range-Division User Relay Selection Scheme and Performance Analysis in NOMA-based Cooperative Opportunistic Multicast Systems

Challenges, Standards, and Solutions for Secure and Intelligent5GInternet of Things (IoT) Scenarios

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