Colloquium: ECE Faculty Candidate
Monday May 7 11:00 - 11:50 AM **Special location and time** Kelley 1005 Lei Ying Ph.D. Candidate Electrical and Computer Engineering University of Illinois at Urbana- Champaign Exploiting diversity in large-scale wireless networks With the development of wireless technology and availability of cheap wireless devices, large-scale wireless networks are becoming a reality. Diversity is an important feature which could be used to improve the performance of wireless networks. For example, in single-transmitter systems, MIMO technology exploits spatial-diversity, and cellular data services exploit multi-user diversity. In this talk, I will explore the advantages and challenges of exploiting diversity using cross-layer techniques in large wireless communication and sensor networks. In particular, two problems will be discussed in this talk. The first problem is delay-throughput trade-offs in mobile ad-hoc networks, where rate-less codes are used to exploit mobility-diversity and achieve the maximum throughput given delay constraints. The second problem is symmetric function computation in noisy wireless sensor networks, where we use reception-diversity to combat channel noise and reduce the error of function computation. Biography: Lei Ying received the B.E. degree from Tsinghua University, Beijing, in 2001, and the M.S. degree in Electrical Engineering from University of Illinois at Urbana- Champaign in 2003, where he is currently working towards a Ph.D. degree. He is a recipient of the Vodafone Fellowship (2006 and 2007). His research interests are in the field of wireless networks, especially in scheduling in wireless networks, mobile ad-hoc networks and wireless sensor networks.
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