Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors
dc.contributor.author | Ashrafzadeh, B. | |
dc.contributor.author | Zaimbashi, A. | |
dc.contributor.author | Soleimani-Nasab, E. | |
dc.contributor.author | Uysal, Murat | |
dc.date.accessioned | 2021-02-18T19:20:10Z | |
dc.date.available | 2021-02-18T19:20:10Z | |
dc.date.issued | 2020-11 | |
dc.identifier.issn | 1536-1276 | en_US |
dc.identifier.uri | http://hdl.handle.net/10679/7335 | |
dc.identifier.uri | https://ieeexplore.ieee.org/document/9170804 | |
dc.description.abstract | Free space optical (FSO) communication systems provide high bandwidth in unregulated spectrum and act as a powerful line-of-sight wireless connectivity solution. The performance of FSO systems can be seriously impaired by fading as a result of atmospheric turbulence and/or pointing errors due to misalignment. In the context of FSO systems, relaying was proposed as an effective fading mitigation technique due to the fact that the variance is distance-dependent in turbulence channels. In this article, we present a unified performance analysis of multi-hop FSO systems over Double Generalized Gamma (DGG) turbulence channels with pointing error impairments. We assume amplify-and-forward relaying and consider both heterodyne detection and intensity modulation with direct detection. We derive tight closed-form expressions for the outage probability and bit error probability of both fixed-gain and channel state information (CSI)-assisted relaying in terms of the bivariate Fox-H functions and Fox-H functions, respectively. We further analyze asymptotic behavior of the outage probability in terms of simple elementary functions and obtain the achievable diversity orders. Diversity gain is found to be a function of atmospheric turbulence parameters, pointing error, detection type and the number of hops. Monte Carlo simulation results are further provided to verify the accuracy of the derived expressions. | en_US |
dc.description.sponsorship | Iran National Science Foundation (INSF) | |
dc.language.iso | eng | en_US |
dc.publisher | IEEE | en_US |
dc.relation.ispartof | IEEE Transactions on Wireless Communications | |
dc.rights | restrictedAccess | |
dc.title | Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors | en_US |
dc.type | Article | en_US |
dc.peerreviewed | yes | en_US |
dc.publicationstatus | Published | en_US |
dc.contributor.department | Özyeğin University | |
dc.contributor.authorID | (ORCID 0000-0001-5945-0813 & YÖK ID 124615) Uysal, Murat | |
dc.contributor.ozuauthor | Uysal, Murat | |
dc.identifier.volume | 19 | en_US |
dc.identifier.issue | 11 | en_US |
dc.identifier.startpage | 7732 | en_US |
dc.identifier.endpage | 7746 | en_US |
dc.identifier.wos | WOS:000589218700052 | |
dc.identifier.doi | 10.1109/TWC.2020.3015780 | en_US |
dc.subject.keywords | Fading channels | en_US |
dc.subject.keywords | Signal to noise ratio | en_US |
dc.subject.keywords | Power system reliability | en_US |
dc.subject.keywords | Probability | en_US |
dc.subject.keywords | Bit error rate | en_US |
dc.subject.keywords | Relays | en_US |
dc.subject.keywords | Wireless communication | en_US |
dc.identifier.scopus | SCOPUS:2-s2.0-85096413865 | |
dc.contributor.authorMale | 1 | |
dc.relation.publicationcategory | Article - International Refereed Journal - Institutional Academic Staff |
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