Directional Antenna Diversity for Mobile Devices: Characterizations and Solutions

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dc.contributor.advisorZhong, Linen_US
dc.creatorAmiri Sani, Ardalanen_US
dc.date.accessioned2012-07-03T22:49:00Zen_US
dc.date.available2012-07-03T22:49:00Zen_US
dc.date.created2011-04en_US
dc.date.issued2011en_US
dc.description.abstractWe report a first-of-its-kind realization of directional transmission for smartphone-like mobile devices using multiple passive directional antennas, supported by only one RF chain. The key is a multi-antenna system (MiDAS) and its antenna selection methods that judiciously select the right antenna for transmission. It is grounded by two measurementdriven studies regarding 1) how smartphones rotate during wireless usage in the field and 2) how orientation and rotation impact the performance of directional antennas under various propagation environments. We implement MiDAS using the WARP platform, and evaluate it usmg a computerized motor to rotate the prototype according to traces collected from smartphone users in the field. Our evaluation shows MiDAS achieves median of 3dB increase in link gain. Combined with rate adaptation and power control, MiDAS also improves goodput and power saving. MiDAS does not require any changes to the network infrastructure, and is therefore suitable for immediate deployment.en_US
dc.format.extent54 ppen_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS E.E. 2011 SANIen_US
dc.identifier.citationAmiri Sani, Ardalan. "Directional Antenna Diversity for Mobile Devices: Characterizations and Solutions." (2011) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/64373">https://hdl.handle.net/1911/64373</a>.en_US
dc.identifier.digitalAmiriSen_US
dc.identifier.urihttps://hdl.handle.net/1911/64373en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectElectrical Engineeringen_US
dc.subjectComputer engineeringen_US
dc.titleDirectional Antenna Diversity for Mobile Devices: Characterizations and Solutionsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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