Coded caching with user grouping over wireless channels

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buir.contributor.authorBüşra, Tegin
buir.contributor.authorDuman, Tolga M.
dc.citation.epage923en_US
dc.citation.issueNumber6en_US
dc.citation.spage920en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorBüşra, Tegin
dc.contributor.authorDuman, Tolga M.
dc.date.accessioned2021-02-18T11:43:37Z
dc.date.available2021-02-18T11:43:37Z
dc.date.issued2020
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractWe study coded caching over non-ergodic fading channels. As the multicast capacity of a broadcast channel is restricted by the user experiencing the worst channel conditions, we formulate an optimization problem to minimize the transmission time by grouping users based on their channel conditions, and transmit coded messages according to the worst channel conditions in the group, as opposed to the worst among all. We develop two algorithms to determine the user groups: a locally optimal iterative algorithm and a numerically more efficient solution through a shortest path problem, and we illustrate the effectiveness of developed solutions via numerical examples.en_US
dc.description.sponsorshipThe work of Busra Tegin was supported by Huawei through a Graduate Fellowship Program.en_US
dc.identifier.doi10.1109/LWC.2020.2975661en_US
dc.identifier.issn2162-2337
dc.identifier.urihttp://hdl.handle.net/11693/75457
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttps://dx.doi.org/10.1109/LWC.2020.2975661en_US
dc.source.titleIEEE Wireless Communications Lettersen_US
dc.subjectCoded cachingen_US
dc.subjectWireless fading channelsen_US
dc.titleCoded caching with user grouping over wireless channelsen_US
dc.typeArticleen_US
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