Exploting Angle-of-Arrival Information for Highly Accurate and Responsive Indoor Localization
Event details
| Date | 20.06.2012 |
| Hour | 16:00 › 17:00 |
| Speaker | Prof. Kyle Jamieson, University College London, UK |
| Location | |
| Category | Conferences - Seminars |
Abstract:
Location systems are key to a rich experience for mobile users. When they roam outdoors, mobiles can usually count on a clear GPS signal for an accurate location, but indoors, GPS usually fades, and so up until recently, mobiles have had to rely mainly on rather coarse-grained signal strength readings for location. What has changed
this status quo is the recent trend of dramatically increasing numbers of antennas at the indoor AP, mainly to bolster capacity and coverage with multiple-input, multiple-output (MIMO) techniques. In the near future, the number of antennas at the access point will increase to meet increasing demands for wireless capacity with MIMO links, spatial division multiplexing, and interference management. We thus observe an opportunity to revisit the important problem of localization with a fresh perspective. I will talk about the design and experimental evaluation of ArrayTrack, an indoor location system that uses Angle-of-Arrival information at access points to track wireless clients in real time as they roam about a building. We have prototyped ArrayTrack on the WARP platform, emulating the capabilities of an inexpensive 802.11 wireless access point. Our results show that ArrayTrack can pinpoint 33 clients spread out over an indoor office environment to within a median 36 cm location accuracy.
Joint work with Jie Xiong.
Bio:
Kyle Jamieson is a Lecturer in the Networks research group at University College London. His research interests are in building real-world wireless systems that cut across the boundary of digital communications and networking. He received the PhD in June 2008 from the Massachusetts Institute of Technology (Cambridge, Massachusetts) and is PI on a European Research Council "Ideas" Programe Research Fellowship.
Location systems are key to a rich experience for mobile users. When they roam outdoors, mobiles can usually count on a clear GPS signal for an accurate location, but indoors, GPS usually fades, and so up until recently, mobiles have had to rely mainly on rather coarse-grained signal strength readings for location. What has changed
this status quo is the recent trend of dramatically increasing numbers of antennas at the indoor AP, mainly to bolster capacity and coverage with multiple-input, multiple-output (MIMO) techniques. In the near future, the number of antennas at the access point will increase to meet increasing demands for wireless capacity with MIMO links, spatial division multiplexing, and interference management. We thus observe an opportunity to revisit the important problem of localization with a fresh perspective. I will talk about the design and experimental evaluation of ArrayTrack, an indoor location system that uses Angle-of-Arrival information at access points to track wireless clients in real time as they roam about a building. We have prototyped ArrayTrack on the WARP platform, emulating the capabilities of an inexpensive 802.11 wireless access point. Our results show that ArrayTrack can pinpoint 33 clients spread out over an indoor office environment to within a median 36 cm location accuracy.
Joint work with Jie Xiong.
Bio:
Kyle Jamieson is a Lecturer in the Networks research group at University College London. His research interests are in building real-world wireless systems that cut across the boundary of digital communications and networking. He received the PhD in June 2008 from the Massachusetts Institute of Technology (Cambridge, Massachusetts) and is PI on a European Research Council "Ideas" Programe Research Fellowship.
Links
Practical information
- General public
- Free
Organizer
- SuRI 2012
Contact
- Simone Muller