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dc.contributor.authorChembil Palat, Rameshen_US
dc.date.accessioned2014-03-14T20:20:16Z
dc.date.available2014-03-14T20:20:16Z
dc.date.issued2006-12-08en_US
dc.identifier.otheretd-12132006-142934en_US
dc.identifier.urihttp://hdl.handle.net/10919/30080
dc.description.abstractThe demand for access to information when and where you need has motivated the transition of wireless communications from a fixed infrastructure based cellular communications technology to a more pervasive adhoc wireless networking technology. Challenges still remain in wireless adhoc networks in terms of meeting higher capacity demands, improved reliability and longer connectivity before it becomes a viable widespread commercial technology. Present day wireless mesh networking uses node-to-node serial multi-hop communication to convey information from source to destination in the network. The performance of such a network depends on finding the best possible route between the source and destination nodes. However the end-to-end performance can only be as good as the weakest link within a chosen route. Unlike wired networks, the quality of point-to-point links in a wireless mesh network is subject to random fluctuations. This adversely affects the performance resulting in poor throughput and poor energy efficiency. In recent years, a new paradigm for communication called cooperative communications has been proposed for which initial information theoretic studies have shown the potential for improvements in capacity over traditional multi-hop wireless networks. Cooperative communication involves exploiting the broadcast nature of the wireless medium to form virtual antenna arrays out of independent single-antenna network nodes for transmission. In this research we explore the fundamental performance limits of cooperative communication under more practical operating scenarios. Specifically we provide a framework for computing the outage and ergodic capacities of non identical distributed MIMO links, study the effect of time synchronization error on system performance, analyze the end-to-end average bit error rate (ABER) performance under imperfect relaying, and study range extension and energy efficiency offered by the system when compared to a traditional system.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartdissertation_rcp.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectdiversityen_US
dc.subjectMIMOen_US
dc.subjectwirelessen_US
dc.subjectrelayingen_US
dc.subjecttime synchronization erroren_US
dc.subjectcooperative communicationen_US
dc.titlePerformance analysis of cooperative communication for wireless networksen_US
dc.typeDissertationen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
dc.contributor.committeememberEllingson, Steven W.en_US
dc.contributor.committeememberRibbens, Calvin J.en_US
dc.contributor.committeememberTranter, William H.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12132006-142934/en_US
dc.contributor.committeecochairAnnamalai, Annamalai Jr.en_US
dc.contributor.committeecochairReed, Jeffrey Hughen_US
dc.date.sdate2006-12-13en_US
dc.date.rdate2007-01-08
dc.date.adate2007-01-08en_US


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