2012
Events
Energy Harvesting Active Networked Tags (EnHANTs) for Ubiquitous Object Networking
Speaker: Maria Gorlatova, Columbia University
Date:
Friday, November 23, 2012
Time:
11:00 a.m. - 12:00
p.m.
Location: 4359 ME (Mackenzie Engineering Building), Carleton University, 1125 Colonel By Drive,
Ottawa, ON, Canada K1S 5B6
Admission: Free.
Registration required. To ensure a seat, please register by e-mail
contacting: Yifeng Zhou at yifeng.zhou@crc.gc.ca; or Jun Li
at jun.li@crc.gc.ca; or F. Richard Yu
at richard_yu@carleton.ca.
Abstract:
Recent advances in ultra-low-power circuit design, ultra-wideband impulse-radio (UWB-IR) wireless communications,
and organic energy harvesting technologies will enable the realization of the EnHANTs in the near future. In this
talk I will describe the important paradigm shifts associated with the underlying technologies enabling the EnHANTs.
I will describe our efforts in designing and developing the EnHANT prototypes and the prototype testbed, and will
present the results of the indoor light energy measurement study we have been conducting to characterize the EnHANT
energy availability. I will also describe the energy-harvesting-adaptive communication and networking algorithms we
have been designing and developing for the EnHANTs. This talk is based on the publications that appeared in the ACM
MobiCom'09, IEEE WiOpt'11, and IEEE INFOCOM'11. The EnHANTs Project recognitions include the 1st place in the Vodafone
Americas Foundation Wireless Innovation Competition, the IEEE ComSoc Award for Advances in Communications, and the ACM
SenSys'11 Best Student Demo Award.
About the
Speaker:
Maria Gorlatova received B.Sc. and M.Sc. degrees in Electrical Engineering from University of Ottawa in 2004 and 2006
respectively. In 2006-2008 she worked as a research scientist, specializing in security of wireless networks, at Defence
R&D Canada and at Telcordia Technologies Advanced Research. Since 2008 Maria has been a Ph.D. Candidate in Electrical
Engineering at Columbia University. Maria's Ph.D. research is focused on designing, developing, analyzing, and evaluating
communication, networking, and resource allocation algorithms for the EnHANTs. She is a recipient of the Columbia University
Presidential Fellowship, Canadian Graduate Scholar (CGS) NSERC Fellowships, and the 2012 Google Anita Borg USA Fellowship.
She is a co-recipient of the 2011 ACM SenSys Best Student Demo Award and the 2011 IEEE Communications Society Award for
Advances in Communications.
Soft-TDMAC: A Software-based 802.11 Overlay TDMA MAC Protocol with Microsecond Synchronization
Speaker: Dr. Petar Djukic, Huawei Canada Research Centre
Date:
Friday July 27, 2012
Time:
Networking: 11:45 am - 12:00 pm; Seminar: 12:00 p.m. - 1:00
p.m.
Location: Room 5084, SITE Building/University of Ottawa, 800 King Edward Avenue, Ottawa
Admission: Free.
Registration required. To ensure a seat, please register by e-mail
contacting: Yifeng Zhou at yifeng.zhou@crc.gc.ca; or Jun Li
at jun.li@crc.gc.ca.
Abstract:
We implement a new software-based multi-hop TDMA MAC protocol (Soft-TDMAC) with microsecond
synchronization using a novel system interface for development of 802.11 overlay TDMA MAC protocols (SySI-MAC).
SySI-MAC provides a simple, kernel independent, message based interface for overlay MAC protocol implementations
to schedule transmissions, send packets, and receive packets. The key feature of SySI-MAC is that it provides
near deterministic timers and transmission times, which allows for implementation of highly synchronized TDMA MAC
protocols. Building on SySI-MAC's predictable transmission times, we implement Soft-TDMAC, a software based 802.11
overlay multi-hop TDMA MAC protocol. Soft-TDMAC has a synchronization mechanism which synchronizes all pairs of
network clocks to within microseconds of each other. Building on pairwise synchronization, Soft-TDMAC achieves
tight network-wide synchronization. With network wide synchronization independent of data transmissions, Soft-TDMAC
can schedule arbitrary TDMA transmission patterns. For example, Soft-TDMAC enables schedules that decrease end-to-end
delay and take end-to-end rate demands into account. We summarize hundreds of hours of testing Soft-TDMAC on a
multi-hop test-bed, showing the synchronization capabilities of the protocol and the benefits of flexible scheduling.
This work was done while Petar was a post-doctoral researcher at the University of California, Davis. It was published
at INFOCOM 2008 and in IEEE Transactions on Mobile Computing in 2012.
About the
Speaker:
Petar Djukic (S '01, M '08) received B.A.Sc., M.A.Sc. and Ph.D. degrees from the University of Toronto in 1999,
2002 and 2008, respectively. He is currently with Huawei Canada Research Centre. From 2010 to 2011 he was a research
scientist with the Communications Research Centre, Ottawa, Canada. From 2008 to 2010 we was a postdoctoral researcher
at the Department of Systems and Computer Engineering, Carleton University, Ottawa, Canada. From 2007 to 2008 he was a
postdoctoral researcher at the Department of Computer Science, University of California, Davis. His research interests
are in wireless multi-hop scheduling and resource allocation and test-bed implementations of new wireless MAC protocols.
From 1999 to 2001 he worked as a software designer in Ottawa, Canada.
Greener Video
Coding
Speaker: Prof. Ricardo
L. de Queiroz, Universidade de Brasilia
Date:
Friday March 2,
2012
Time: Registration and
Networking: 5:00 pm ?05:30
pm; Seminar: 05:30 p.m. ?06:30
p.m.
Location: Algonquin College, Room T129, T-Building,
1385 Woodroffe Ave., Ottawa, Ontario, Canada
Parking:
at the
parking area # 9. Please respect restricted areas. No fee after
5:00 p.m.
ADMISSION: Free.
Registration required. To ensure a seat, please register by e-mail
contacting: Wahab Almuhtadi at almuhtadi@ieee.org, Yifeng Zhou at yifeng.zhou@crc.gc.ca; or Jun Li
at jun.li@crc.gc.ca.
Abstract:
Computers and information
technology are proving themselves as energy-hungry partners in a society
with carbon emission issues to be resolved. Video coding is a very
computation-intensive, energy-demanding task. We approach green computing
applied to video by setting task parameters in order to minimize energy
consumption for a given performance. We applied the concept to H.264/AVC
video coding, showing that one can substantially reduce energy consumption
at the expense of a small rate-distortion (RD) performance penalty. We
used a state-of-the-art implementation, x264, for tests and show RD
results for comparisons and discussions.
About the
Speaker:
Dr. Ricardo L. de Queiroz received
his Ph.D. degree from The University of Texas at Arlington in 1994. He
joined the research staff at Xerox Corp. from 1994 to 2002. Since 2004 he
is with Universidade de Brasilia, where he is now a Full Professor at the
Computer Science Department. Dr. de Queiroz has published over 140
articles in Journals and conferences and contributed chapters to books as
well. He also holds 46 issued patents. He is an elected member of the IEEE
Signal Processing Society's Multimedia Signal Processing (MMSP) Technical
Committee and a former member of other committees and editorial boards. He
has been appointed an IEEE Signal Processing Society Distinguished
Lecturer for the 2011-2012 term. He also organized many conferences and
IEEE chapters. His research interests include image and video compression,
multirate signal processing, and color
imaging.
Advances
in Body Area Networks
Speaker:
Prof. Min Chen,
Huazhong University of Science and Technology,
China
Date:
Friday April 13,
2012
Time: 2:00 p.m. - 3:00 p.m.
Location: 4359 ME (Mackenzie Engineering
Building), Carleton University, 1125 Colonel By Drive,
Ottawa, ON, Canada K1S 5B6
ADMISSION: Free. Registration
preferred by E-mail contacting: Yifeng Zhou (yifeng.zhou@crc.gc.ca),
or
Rami Abielmona (rabielmo@ieee.org),
or Sreeraman Rajan (sreeraman@ieee.org), or
David Coll (dccoll@ieee.org), or Jun
Li (jun-li@ieee.org).
Abstract:
Advances in wireless
communication technologies, such as wearable and implantable biosensors,
along with recent developments in the embedded computing area are
enabling the design, development, and implementation of body area networks
(BANs). This class of networks is paving the way for the deployment
of innovative healthcare monitoring applications with lower cost and
higher quality healthcare services, and more safety for patients. These
benefits and impacts on the facilities of human society have fuelled
increasing public interests and have attracted large support and
investment from government, industrial and academic researchers. This talk
is to introduce some recent advances as well as technical challenges in
the research of BANs deployed with wireless communications technologies
for interactive and intelligent healthcare monitoring
applications.
About the
Speaker:
Min Chen is a
professor in School of Computer Science and Technology at Huazhong
University of Science and Technology. He was an assistant professor in
School of Computer Science and Engineering at Seoul National University
(SNU) since September 2009. He has been a R&D Director for Confederal
Network Inc., a Research Associate in the Dept. of Computer Science at
University of British Columbia (UBC). He worked as a Post-Doctoral Fellow
in Department of Electrical and Computer Engineering at UBC for three
years, here his faculty advisor is Prof. Victor C.M. Leung. Before joining
UBC, he was a Post-Doctoral Fellow at SNU for one and half years. He
received the Best Paper Runner-up Award from QShine 2008. He has more than
130 first-three-author papers including over 70 SCI/SCIE journal
publications. He serves many conferences and workshops as General Chair,
TPC Chair, or TPC member. He serves as editor or associate editor for
Wireless Communications and Mobile Computing, IET Communications, IET
Networks, Wiley I. J. of Security and Communication Networks, Journal of
Internet Technology, KSII Trans. Internet and Information Systems,
International Journal of Sensor Networks. He is managing editor for
IJAACS. Currently, he works as General Co-Chair for the 12th IEEE
International Conference on Computer and Information Technology (IEEE
CIT-2012). He is an IEEE Senior Member since
2009.
Contact: Joint
Chapter of Signal Processing, Oceanic Engineering, and Geoscience and
Remote Sensing
