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dc.contributor.authorHe, Xin
dc.date.accessioned2012-07-30T09:07:13Z
dc.date.available2012-07-30T09:07:13Z
dc.date.issued2012
dc.identifier.isbn978-82-7117-711-9
dc.identifier.issn1504-9272
dc.identifier.urihttp://hdl.handle.net/11250/137629
dc.descriptionDoktorgradsavhandling i informasjons- og kommunikasjonsteknologi, Universitetet i Agder, Grimstad, 2012no_NO
dc.description.abstractThis dissertation addresses cooperative communications and proposes multi-layer solu- tions for wireless local area networks, focusing on cooperative MAC design. The coop- erative MAC design starts from CSMA/CA based wireless networks. Three key issues of cooperation from the MAC layer are dealt with: i.e., when to cooperate (opportunistic cooperation), whom to cooperate with (relay selection), and how to protect cooperative transmissions (message procedure design). In addition, a cooperative MAC protocol that addresses these three issues is proposed. The relay selection scheme is further optimized in a clustered network to solve the problem of high collision probability in a dense network. The performance of the proposed schemes is evaluated in terms of through- put, packet delivery rate and energy efficiency. Furthermore, the proposed protocol is verified through formal model checking using SPIN. Moreover, a cooperative code allo- cation scheme is proposed targeting at a clustered network where multiple relay nodes can transmit simultaneously. The cooperative communication design is then extended to the routing layer through cross layer routing metrics. Another part of the work aims at enabling concurrent transmissions using cooperative carrier sensing to improve the per- formance in a WLAN network with multiple access points sharing the same channel.no_NO
dc.language.isoengno_NO
dc.publisherUniversitetet i Agder / University of Agderno_NO
dc.relation.ispartofseriesDoctoral dissertations at the University of Agder;48
dc.titleCooperative Communications inWireless Local Area Networks: MAC Protocol Design and Multi-layer Solutionsno_NO
dc.typeDoctoral thesisno_NO
dc.typePeer reviewed
dc.source.pagenumberxxx, 216no_NO


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