Average capacity maximization via channel switching in the presence of additive white Gaussian noise channels and switching delays

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buir.contributor.authorGezici, Sinan
dc.citation.epage6243en_US
dc.citation.issueNumber9en_US
dc.citation.spage6228en_US
dc.citation.volumeNumber15en_US
dc.contributor.authorSezer, A. D.en_US
dc.contributor.authorGezici, Sinanen_US
dc.date.accessioned2018-04-12T10:41:49Z
dc.date.available2018-04-12T10:41:49Z
dc.date.issued2016en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractThe optimal channel switching problem is studied for average capacity maximization in the presence of additive white Gaussian noise channels and channel switching delays. First, an optimization problem is formulated for the maximization of the average channel capacity, considering channel switching delays and constraints on average and peak powers. Then, an equivalent optimization problem is obtained to facilitate theoretical investigations. The optimal strategy is derived and the corresponding average capacity is specified when channel switching is performed among a given number of channels. Based on this result, it is shown that channel switching among more than two different channels is not optimal. In addition, the maximum average capacity achieved by the optimal channel switching strategy is formulated as a function of the channel switching delay parameter and the average and peak power limits. Then, scenarios under which the optimal strategy corresponds to the exclusive use of a single channel or to channel switching between two channels are described. Furthermore, sufficient conditions are obtained to determine when the optimal single channel strategy outperforms the optimal channel switching strategy. The numerical results are presented to provide the examples of the theoretical results and to illustrate the effects of channel switching delays. © 2002-2012 IEEE.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:41:49Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1109/TWC.2016.2582150en_US
dc.identifier.issn1536-1276
dc.identifier.urihttp://hdl.handle.net/11693/36478
dc.language.isoEnglishen_US
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TWC.2016.2582150en_US
dc.source.titleIEEE Transactions on Wireless Communicationsen_US
dc.subjectCapacityen_US
dc.subjectChannel switchingen_US
dc.subjectSwitching delayen_US
dc.subjectTime sharingen_US
dc.titleAverage capacity maximization via channel switching in the presence of additive white Gaussian noise channels and switching delaysen_US
dc.typeArticleen_US

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