Prediction of drop size distribution parameters for optical wireless communications through moderate continental fog

Awan, M. S.; Nebuloni, Roberto; Capsoni, C.; Csurgai-Horváth, László; Muhammad, Sajid Sheikh; Nadeem, F.; Khan, Muhammad Saeed; Leitgeb, Erich

doi:10.1002/sat.950

Cited by 16 publications

(5 citation statements)

References 24 publications

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“…They are being considered now for space and terrestrial applications [16]. Unmanned aerial vehicles (UAVs), satellites, high altitude platforms, deep space probes are some of the FSO probable applications.…”

Section: Related Workmentioning

confidence: 99%

Performance Enhancement of Telemedicine Network by Free Space Optics Links Provisioning

Siraj

Shoaib

Memon³

2017

Acta Phys. Pol. A

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Health care has benefited immensely with the implementation of fast moving information technology. It is a challenging assignment for the researchers to implement the present day technologies such as wireless mesh networks. Wireless mesh networks are deployed to guarantee a reliable and stable network infrastructure backbone to telemedicine systems. They are preferred to other wireless networks, as the solution which they provide is robust for broadband services. They are robust because if routing is not possible due to some mesh nodes failure, routing can be done by the other mesh nodes present. Wireless mesh network cannot only spread coverage but also save both cabling cost and human resource. However, their performance is degraded due to interference and varying load. Interference is a critical issue in wireless mesh networks. The interference occurs because of the congested unlicensed radio frequency spectrum. This problem can be addressed by applying free space optics technology for transmission instead of radio frequency technology in the unlicensed spectrum. Network capacity issue is addressed by provisioning free space optics links to generate the much needed throughput and to minimize interference. Telemedicine network is a network, which requires a high capacity bandwidth to cater for a large number of remote patients. It is observed that free space optics links provisioning results in a significant performance enhancement for the telemedicine network.

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Section: Related Workmentioning

confidence: 99%

Performance Enhancement of Telemedicine Network by Free Space Optics Links Provisioning

Siraj

Shoaib

Memon³

2017

Acta Phys. Pol. A

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“…FSO systems can be used to meet the broadband communication needs for both terrestrial and space applications [22]. Possible applications include satellites, deep-space probes, ground stations, unmanned aerial vehicles (UAVs), high altitude platforms (HAPs), and other nomadic communication applications.…”

Section: Related Workmentioning

confidence: 99%

Video on Demand Over Optical Wireless Communication Links

2016

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Video on demand technology is a modern wireless communication application which requires a large bandwidth. Optical wireless networks, as a potential alternative to radio frequency, is an emerging technology that is easier to set up and provides a cost effective solution, where a physical network is difficult to deploy. Optical wireless networks can be used as a backbone to provide the much needed bandwidth for video on demand application. In this paper, Wavelength Division Multiplexing modulation scheme is proposed for the optical wireless networks due to its significance of transmitting distinct data channels at different wavelengths. Wavelength Division Multiplexing can be easily integrated with optical wireless networks, consequently resulting in an increased data rate. This paper presents a novel approach of integrating video on demand with the state of art Wavelength Division Multiplexing based optical wireless networks. Furthermore, the paper discusses the challenges and advantages over the convention modulation schemes.

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“…TABLE III. STATISTICS OF ALL CONTINENTAL FOG EVENTS MEASURED DURING YEAR 2005-06 AT GRAZ [11] In order to point out the time periods when the probability of occurrence of continental fog attenuations is high for the winter months, we draw a contour plot of all the data collected during year 2005-06. Since our attenuation data consists of five winter months in total, we plot the attenuations measured on the second scale.…”

Section: Analysis Of Continental Fog Attenuationsmentioning

confidence: 99%

Spatial and Time Variability of Fog Attenuations for Optical Wireless Links in the Troposphere

Awan

Leitgeb

Loeschnig

et al. 2009

2009 IEEE 70th Vehicular Technology Conference Fall

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Line of sight optical wireless or Free Space Optics (FSO) plays an increasingly important role in our communication infrastructure as they offer gigabit per second data rates and low system complexity. The biggest disadvantage of terrestrial FSO links is that low clouds, dry snow and especially dense fog conditions entail heavy losses to the optical beam transmitted in the terrestrial free-space. We address here the effect of fog on optical wireless signals theoretically and experimentally and analyse measured fog attenuations in terms of its temporal and spatial variability. Attenuation data presented and discussed here is collected in Graz, Austria, in the winter months of year 2004-05 and year 2005-06. It is shown that continental fog attenuations vary spatially and temporally in case of terrestrial FSO link and has very distinct seasonal and diurnal dependence during the fog life cycle of continental fog.

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Prediction of drop size distribution parameters for optical wireless communications through moderate continental fog

Cited by 16 publications

References 24 publications

Performance Enhancement of Telemedicine Network by Free Space Optics Links Provisioning

Performance Enhancement of Telemedicine Network by Free Space Optics Links Provisioning

Video on Demand Over Optical Wireless Communication Links

Spatial and Time Variability of Fog Attenuations for Optical Wireless Links in the Troposphere

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