Link Establishment in Ad Hoc Networks Using Smart Antennas

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dc.contributor.authorDham, Vikramen
dc.contributor.committeechairDaSilva, Luiz A.en
dc.contributor.committeememberMidkiff, Scott F.en
dc.contributor.committeememberAnnamalai, Annamalai Jr.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:35:26Zen
dc.date.adate2003-05-19en
dc.date.available2014-03-14T20:35:26Zen
dc.date.issued2003-01-15en
dc.date.rdate2003-05-19en
dc.date.sdate2003-05-07en
dc.description.abstractTraditionally medium access control protocols for ad hoc networks have been designed for nodes using omni directional antennas. Through the use of directional antennas, it is possible to obtain higher efficiency. In this thesis we investigate the impact of these antennas on aggregate throughput and end-to-end delay. The use of omni-directional antennas not only results in lower power efficiency, but also decreases network efficiency due to interference caused by the transmission of packets in undesired directions. This thesis explores the effect of using smart antennas and proposes a signaling mechanism for forming the extended links using the network layer. For the performance assessment of the wireless networks using directional antennas, baseline models of phased array antenna and channel have been developed using the discrete event simulator OPNET ModelerTM 8.0. Simulation scenarios have been created for single hop as well as multihop networks. From the results of the simulation we observe that although the nodes forming the extended link experience decrease in end-to-end delay, the data successfully transmitted using extended link is correlated to the spatial distribution of nodes.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05072003-180228en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05072003-180228/en
dc.identifier.urihttp://hdl.handle.net/10919/32310en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectXuDSRen
dc.subjectextended linken
dc.subjectWLANen
dc.subjectSimulationen
dc.subjectdirectional antennaen
dc.subjectDSRen
dc.titleLink Establishment in Ad Hoc Networks Using Smart Antennasen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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