PERFORMANCE EVALUATION OF NULLSPACE STOPPING CONDITION INCORPORATING NETWORK CODING IN DELAY TOLERANT NETWORKS

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dc.contributor.advisorLa, Richard Jen_US
dc.contributor.authorBai, Weien_US
dc.contributor.departmentElectrical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2015-07-17T05:37:04Z
dc.date.available2015-07-17T05:37:04Z
dc.date.issued2015en_US
dc.description.abstractFor delay tolerant networks (DTNs), since there is no guarantee of end-to-end path from a source to a destination, routing protocols should make use of opportunistic contacts to deliver files. Although protocols employing network coding have been shown to achieve promising results in DTNs, they still suffer from redundant transmissions. An efficient stopping condition utilizing nullspace has been proposed recently. But more comprehensive studies are needed. In this thesis, a systematic research on effectiveness and efficiency of nullspace stopping condition is explored. We propose a novel algorithm to calculate nullspace. Using comprehensive simulations, we show that the benefits of nullspace stopping condition to network coding depend on scenarios. Moreover, performances may vary even in the same scenario with respect to the number and size of disseminated files. Finally explanations about these phenomena are given out.en_US
dc.identifierhttps://doi.org/10.13016/M2RD10
dc.identifier.urihttp://hdl.handle.net/1903/16810
dc.language.isoenen_US
dc.subject.pqcontrolledElectrical engineeringen_US
dc.subject.pquncontrolledDelay Tolerant Networken_US
dc.subject.pquncontrolledNetwork Codingen_US
dc.subject.pquncontrolledNullspace Stopping Conditionen_US
dc.titlePERFORMANCE EVALUATION OF NULLSPACE STOPPING CONDITION INCORPORATING NETWORK CODING IN DELAY TOLERANT NETWORKSen_US
dc.typeThesisen_US

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