Directional Antenna Diversity for Mobile Devices: Characterizations and Solutions

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dc.contributor.advisorZhong, Lin
dc.creatorAmiri Sani, Ardalan
dc.date.accessioned2012-07-03T22:49:00Z
dc.date.available2012-07-03T22:49:00Z
dc.date.created2011-04
dc.date.issued2011
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.
dc.format.extent54 ppen_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS E.E. 2011 SANI
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>.
dc.identifier.digitalAmiriSen_US
dc.identifier.urihttps://hdl.handle.net/1911/64373
dc.language.isoeng
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.
dc.subjectElectrical Engineering
dc.subjectComputer engineering
dc.titleDirectional Antenna Diversity for Mobile Devices: Characterizations and Solutions
dc.typeThesis
dc.type.materialText
thesis.degree.departmentElectrical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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