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dc.contributor.authorYazar, B.en_US
dc.contributor.authorArslan, O.en_US
dc.contributor.authorKaraşan, O. E.en_US
dc.contributor.authorKara, B. Y.en_US
dc.date.accessioned2019-01-30T15:56:47Z
dc.date.available2019-01-30T15:56:47Z
dc.date.issued2016-09en_US
dc.identifier.issn0305-0483
dc.identifier.urihttp://hdl.handle.net/11693/48543
dc.description.abstractIn this paper, we consider problems originating from one of the largest Internet service providers operating in Turkey. The company mainly faces two different design problems: the green field design (area with no Internet access) and the copper field re-design (area with limited access over copper networks). In the green field design problem, the aim is to design a least cost fiber optical network that will provide high bandwidth Internet access from a given central station to a set of aggregated demand nodes. Such an access can be provided either directly by installing fibers or indirectly by utilizing passive splitters. Insertion loss, bandwidth level and distance limitations should simultaneously be considered in order to provide a least cost design to enable the required service level. In the re-design of the copper field application, the aim is to improve the current service level by augmenting the network with fiber optical wires, specifically by adding cabinets to copper rings in the existing infrastructure and by constructing direct fiber links from cabinets to distant demand nodes. Mathematical models are constructed for both problem specifications. Extensive computational results based on realistic data from Kartal (45 nodes) and Bakırköy (74 nodes) districts in Istanbul show that the proposed models are viable exact solution methodologies for moderate dimensions.en_US
dc.language.isoEnglishen_US
dc.source.titleOmegaen_US
dc.relation.isversionofhttps://doi.org/10.1016/j.omega.2015.10.001en_US
dc.subjectLocationen_US
dc.subjectAllocationen_US
dc.subjectTelecommunicationsen_US
dc.subjectApplicationen_US
dc.titleFiber optical network design problems: a case for Turkeyen_US
dc.typeArticleen_US
dc.departmentDepartment of Industrial Engineeringen_US
dc.citation.spage23en_US
dc.citation.epage40en_US
dc.citation.volumeNumber63en_US
dc.identifier.doi10.1016/j.omega.2015.10.001en_US
dc.publisherElsevieren_US
dc.identifier.eissn1873-5274


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