Outage Probability Analysis of FSO Links over Foggy Channel

Handle URI:
http://hdl.handle.net/10754/622983
Title:
Outage Probability Analysis of FSO Links over Foggy Channel
Authors:
Esmail, Maged Abdullah ( 0000-0001-9025-0529 ) ; Fathallah, Habib ( 0000-0001-6665-9762 ) ; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
Outdoor Free space optic (FSO) communication systems are sensitive to atmospheric impairments such as turbulence and fog, in addition to being subject to pointing errors. Fog is particularly severe because it induces an attenuation that may vary from few dBs up to few hundreds of dBs per kilometer. Pointing errors also distort the link alignment and cause signal fading. In this paper, we investigate and analyze the FSO systems performance under fog conditions and pointing errors in terms of outage probability. We then study the impact of several effective communication mitigation techniques that can improve the system performance including multi-hop, transmit laser selection (TLS) and hybrid RF/FSO transmission. Closed-form expressions for the outage probability are derived and practical and comprehensive numerical examples are suggested to assess the obtained results. We found that the FSO system has limited performance that prevents applying FSO in wireless microcells that have a 500 m minimum cell radius. The performance degrades more when pointing errors appear. Increasing the transmitted power can improve the performance under light to moderate fog. However, under thick and dense fog the improvement is negligible. Using mitigation techniques can play a major role in improving the range and outage probability.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Esmail MA, Fathallah H, Alouini M-S (2017) Outage Probability Analysis of FSO Links over Foggy Channel. IEEE Photonics Journal: 1–1. Available: http://dx.doi.org/10.1109/jphot.2017.2672641.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Photonics Journal
Issue Date:
22-Feb-2017
DOI:
10.1109/jphot.2017.2672641
Type:
Article
ISSN:
1943-0655
Sponsors:
The authors acknowledge the College of Engineering Research Center and Deanship of Scientific Research at King Saud University in Riyadh for the financial support to carry out the research work reported in this paper.
Additional Links:
http://ieeexplore.ieee.org/document/7862126/
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorEsmail, Maged Abdullahen
dc.contributor.authorFathallah, Habiben
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2017-03-07T13:47:41Z-
dc.date.available2017-03-07T13:47:41Z-
dc.date.issued2017-02-22en
dc.identifier.citationEsmail MA, Fathallah H, Alouini M-S (2017) Outage Probability Analysis of FSO Links over Foggy Channel. IEEE Photonics Journal: 1–1. Available: http://dx.doi.org/10.1109/jphot.2017.2672641.en
dc.identifier.issn1943-0655en
dc.identifier.doi10.1109/jphot.2017.2672641en
dc.identifier.urihttp://hdl.handle.net/10754/622983-
dc.description.abstractOutdoor Free space optic (FSO) communication systems are sensitive to atmospheric impairments such as turbulence and fog, in addition to being subject to pointing errors. Fog is particularly severe because it induces an attenuation that may vary from few dBs up to few hundreds of dBs per kilometer. Pointing errors also distort the link alignment and cause signal fading. In this paper, we investigate and analyze the FSO systems performance under fog conditions and pointing errors in terms of outage probability. We then study the impact of several effective communication mitigation techniques that can improve the system performance including multi-hop, transmit laser selection (TLS) and hybrid RF/FSO transmission. Closed-form expressions for the outage probability are derived and practical and comprehensive numerical examples are suggested to assess the obtained results. We found that the FSO system has limited performance that prevents applying FSO in wireless microcells that have a 500 m minimum cell radius. The performance degrades more when pointing errors appear. Increasing the transmitted power can improve the performance under light to moderate fog. However, under thick and dense fog the improvement is negligible. Using mitigation techniques can play a major role in improving the range and outage probability.en
dc.description.sponsorshipThe authors acknowledge the College of Engineering Research Center and Deanship of Scientific Research at King Saud University in Riyadh for the financial support to carry out the research work reported in this paper.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/document/7862126/en
dc.rights(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en
dc.subjecttransmit laser selectionen
dc.subjectFSOen
dc.subjectfogen
dc.subjectoutage probabilityen
dc.subjectmitigation techniquesen
dc.titleOutage Probability Analysis of FSO Links over Foggy Channelen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalIEEE Photonics Journalen
dc.eprint.versionPost-printen
dc.contributor.institutionElectrical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabiaen
dc.contributor.institutionKACST Technology Innovation Center in Radio Frequency and Photonics (RFTONICs) center, Riyadh 11421, Saudi Arabiaen
dc.contributor.institutionComputer Department, College of Science of Bizerte, University of Carthage, Tunisiaen
kaust.authorAlouini, Mohamed-Slimen
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