Computer Science

CS Colloquium Speaker: Dr. Dimitrios Koutsonikolas

CS Colloquium Speaker: Dr. Dimitrios Koutsonikolas
University at Buffalo, The State University of New York
When: Monday, November 9, 2015, 11:00-12:00
1003 Kemper Hall, UC Davis

Title: Enabling Motion Detection on Commodity WiFi Devices using PHY Layer Information


Client motion detection in WLANs has the potential to both improve protocol
performance and enable a number of novel applications. In this talk, I will
discuss our recent work that leverages wireless signals to enable human
motion detection at different granularities on commodity WiFi devices. In the
first part of the talk, I will present a scheme for detecting and classifying
client mobility on the access point side by leveraging Channel State
Information (CSI) and Time-of-Flight (ToF), and I will demonstrate how
mobility-awareness can improve the performance of a number of wireless
protocols. In the second part of the talk, I will introduce WiDraw, the first
hand motion tracking system using commodity WiFi cards. WiDraw harnesses
the Angle-of-Arrival (AoA) values of incoming wireless signals at the mobile
device to track the user’s hand trajectory without requiring the user to touch
the device or use any external hardware. Using WiDraw, a user can draw
arbitrary lines, curves, or even alphabetical characters, simply by hand
motion in the air.
Dr. Dimitrios Koutsonikolas received his Ph.D. in Electrical and Computer
Engineering from Purdue University in August 2010 and he worked as a
Postdoctoral Researcher at Purdue University from September to December
2010. He is currently an Assistant Professor of Computer Science and
Engineering at the University at Buffalo, The State University of New York,
where he leads the University at Buffalo Wireless Networking and Systems
(UB WiNS) Lab. Dimitrios’s research interests lie broadly in experimental
wireless networking and mobile computing, with a focus on high
performance and energy efficient protocol design and implementation,
testbed prototyping, network measurements, and performance evaluation.
He has published a total of 48 papers in top venues including ACM MobiCom,
Transactions on Networking, IEEE Transactions on Mobile Computing, and
IEEE Transactions on Wireless Communications. Dimitrios has been regularly
serving on the TPC of a number of networking conferences including IEEE
IEEE ICDCS. He co-chaired the ACM CoNEXT 2011 Student Workshop and he is
co-organizing the IEEE ICNP 2015 PhD Forum. He is a member of IEEE, ACM,


1003 Kemper Hall

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