Date/Time |
July 13, 2010 |
14:30-16:00 |
Title |
Cooperative Communications - A Cross-Layer Protocol Design Perspective
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Speaker |
Prof. Weihua Zhuang, Department of Electrical and Computer Engineering,
University of Waterloo, Canada
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Abstract |
Cooperative communication has been proposed recently as an effective way to mitigate channel impairments in wireless networks. With cooperation, single-antenna mobile terminals in a multi-user environment share antennas from other mobiles to generate a virtual multiple antenna system that achieves more reliable communication with a diversity gain. In this talk, we discuss two fundamental issues of cooperative communications in distributed wireless networks, namely when to cooperate and whom to cooperate with. We focus on medium access control (MAC) protocol design with beneficial node cooperation. With a practical constraint that only a limited number of transmission rates can be supported by the physical layer, we explore a concept of cooperation region in order to identify beneficial cooperative transmissions. To increase long-term network throughput, we propose an optimal grouping strategy for efficient helper node selection and investigate optimal helper placement. Analytical and simulation results will be presented to demonstrate the performance of the proposed MAC protocol and the effectiveness of optimal helper placement. Some insights of the tradeoff between multi-user diversity gain at the physical layer and the helper contention overhead at the MAC layer will also be presented. |
Biography
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Weihua Zhuang received the B.Sc. and M.Sc. degrees from Dalian Maritime University, China, and the Ph.D. degree from the University of New Brunswick, Canada, all in electrical engineering. Since October 1993, she has been with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, where she is a Professor. Since May 2010, she has been a Tier I (Senior) Canada Research Chair in wireless communication networks. Her current research focuses on resource allocation and quality-of-service provisioning in wireless networks.
Dr. Zhuang is a co-recipient of the Best Paper Awards from IEEE WCNC 2007 and 2010, IEEE ICC 2007, and the International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness (QShine) 2007 and 2008. She received the Outstanding Performance Award in 2005, 2006, and 2008 from the University of Waterloo for outstanding achievements in teaching, research, and service, and the Premier's Research Excellence Award in 2001 from the Ontario Government for demonstrated excellence of scientific and academic contributions. Dr. Zhuang is the Editor-in-Chief of IEEE Transactions on Vehicular Technology. She is a Fellow of IEEE and an IEEE Communications Society Distinguished Lecturer.
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Venue |
Franklin Meeting Room, Institute for Infocomm Research,
11th Level Connexis South, 1 Fusionopolis Way,
Singapore 138632
https://www.i2r.a-star.edu.sg/Contact_Us.html |
Organizers |
Technically Sponsored by Institute for Infocomm Research, IEEE Communications Singapore Chapter, IEEE Vehicular Technology Singapore Chapter, IEEE MTT Singapore Chapter & IEEE WIE
Singapore Chapter. |
Misc |
Announcement |
Presentation materials |
Photos of the Event |
Map of Venue |
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