About: Practical Implementation and Performance Study of a Hard-Switched Hybrid FSO/RF Link under Controlled Fog Environment

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The availability and performance of terrestrial free-space optical (FSO) communication systems are heavily deterred by the fluctuating conditions of the atmospheric channel, particularly in the presence of visibility-limiting fog effects. In this paper, we examine the viability of deploying hybrid FSO and radio frequency (RF) links through an experimental study, which takes advantage of a dedicated laboratory atmospheric chamber to emulate the fog scenarios encountered on outdoor environment. In particular, a root mean square power detector is developed and introduced in the system under study to monitor the signal quality of the primary FSO link. The quasi-linear output voltage characteristics of the power detector device is utilized as a useful decision metric to implement hard switching in a hybrid FSO/RF link based upon the changes in the visibility. Our measurement results reveal that the selection of a desirable threshold voltage is dependent upon the intended data rate and minimum achievable bit error rate, in order to enable effective switching between the FSO and RF links. The availability and performance of terrestrial free-space optical (FSO) communication systems are heavily deterred by the fluctuating conditions of the atmospheric channel, particularly in the presence of visibility-limiting fog effects. In this paper, we examine the viability of deploying hybrid FSO and radio frequency (RF) links through an experimental study, which takes advantage of a dedicated laboratory atmospheric chamber to emulate the fog scenarios encountered on outdoor environment. In particular, a root mean square power detector is developed and introduced in the system under study to monitor the signal quality of the primary FSO link. The quasi-linear output voltage characteristics of the power detector device is utilized as a useful decision metric to implement hard switching in a hybrid FSO/RF link based upon the changes in the visibility. Our measurement results reveal that the selection of a desirable threshold voltage is dependent upon the intended data rate and minimum achievable bit error rate, in order to enable effective switching between the FSO and RF links. (en)
Title	Practical Implementation and Performance Study of a Hard-Switched Hybrid FSO/RF Link under Controlled Fog Environment Practical Implementation and Performance Study of a Hard-Switched Hybrid FSO/RF Link under Controlled Fog Environment (en)
skos:prefLabel	Practical Implementation and Performance Study of a Hard-Switched Hybrid FSO/RF Link under Controlled Fog Environment Practical Implementation and Performance Study of a Hard-Switched Hybrid FSO/RF Link under Controlled Fog Environment (en)
skos:notation	RIV/68407700:21230/14:00218844!RIV15-MSM-21230___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(LD12058)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Zvánovec, Stanislav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	38456
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/14:00218844
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Free-space optical (FSO) communications; hybrid FSO/RF link; hard switching; fog attenuation (en)
http://linked.open.../riv/klicoveSlovo	fog attenuation hard switching Free-space optical (FSO) communications hybrid FSO/RF link
http://linked.open...ontrolniKodProRIV	[24DB158FDC70]
http://linked.open...v/mistoKonaniAkce	Manchester
http://linked.open...i/riv/mistoVydani	Piscataway
http://linked.open...i/riv/nazevZdroje	2014 9th International Symposium on Communication Systems, Networks & Digital Signal Processing
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Research of Ambient Influences on Novel Broadband Optical Wireless Systems (RAINBOWS)
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Zvánovec, Stanislav Ghassemlooy, Z. Khalighi, M. A. Ng, W. P. Gourdel, V. Lee, I.E. Uysal, M.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-07-23 (xsd:date)
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1109/CSNDSP.2014.6923856
http://purl.org/ne...btex#hasPublisher	IEEE
https://schema.org/isbn	978-1-4799-2581-0
http://localhost/t...ganizacniJednotka	21230

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