Institute of Computer Science
Georg-August-Universität Göttingen
| Announcements |
| Information |
| People |
| Positions |
| Publications |
| Research |
| Projects |
| Student Projects |
| Teaching |
| Wiki |
Prof. Xi Zhang (Texas A&M University) visiting NET Group
|
Dr. Xi Zhang, Associate Professor at the Department of Electrical and Computer Engineering, Texas A&M University, USA, is visiting NET group on 12th June 2009, and giving a colloquium talk between 14:00-16:00. |
|
|
Invited speaker: Prof. Xi Zhang (Texas A&M University, USA)
Date: Friday 12th June 2009, 14:00ct Location: IFI 1.101 (Seminarraum), Goldschmidtstr. 7, 37077 Goettingen Title: Mobile Multimedia Multicast Over Wireless Networks -- QoS-Guaranteed Cross-Layer Design Framework and Optimization-Based Adaptive Rate Control Abstract: Multimedia multicast is one of the most important, yet challenging, tasks in the current/future networks design. Due to the heterogeneous fading across multicast receivers at any time instant, it is very challenging to design the efficient physical-layer multicast schemes to adapt to the highly varying channel status, while satisfying QoS requirements imposed by higher protocol layers. The multimedia multicast strategy needs to be able to efficiently tradeoff among the throughput, loss rate, and delay QoS requirements for the multimedia applications. To overcome the above problems, we propose a generic framework for adaptive multimedia multicasting over wireless fading channels, where we aim at optimizing the system throughput under the diverse QoS constraints. First, we will start with revealing the fundamental optimized tradeoff between multicast throughput and loss rate control. Second, we integrate the statistical delay-bound QoS guarantees into multimedia multicast and develop the optimal joint delay- and loss-QoS driven adaptive multicasting scheme. Finally, we extend the above work into multi-layer video stream multicast and develop the schemes to minimize the wireless resource consumptions, with satisfied QoS constraints and guaranteed synchronous transmission across multi-video layers. Biography: Prof. Xi Zhang (S'89-SM'98) received the Ph.D. degree in electrical engineering and computer science (Electrical Engineering--Systems) from The University of Michigan, Ann Arbor. He is currently an Associate Professor and the Founding Director of the Networking and Information Systems Laboratory, Department of Electrical and Computer Engineering, Texas A&M University, College Station. He was an Assistant Professor and the Founding Director of the Division of Computer Systems Engineering, Department of Electrical Engineering and Computer Science, Beijing Information Technology Engineering Institute, Beijing, China, from 1984 to 1989. He was a Research Fellow with the School of Electrical Engineering, University of Technology, Sydney, Australia, and the Department of Electrical and Computer Engineering, James Cook University, Queensland, Australia, under a Fellowship from the Chinese National Commission of Education. He was with the Networks and Distributed Systems Research Department, At&T Bell Laboratories, Murray Hills, NJ, and with AT&T Laboratories Research, Florham Park, NJ, in 1997. He has published more than 100 technical papers. His current research interests focus on the areas of wireless networks and communications, mobile computing, cross-layer designs and optimizations for QoS guarantees over mobile wireless networks, wireless sensor and Ad Hoc networks, wireless and wireline network security, network protocols design and modeling for QoS guarantees over multicast (or unicast) wireless (or wireline) networks, statistical communications theory, random signal processing, and distributed computer-control systems. Professor Zhang received the U.S. National Science Foundation EARLY CAREER Award in 2004 for his research in the areas of mobile wireless and multicast networking and systems. He received the TEES Select Young Faculty Award for Excellence in Research Performance from the Dwight Look College of Engineering at Texas A&M University, College Station, in 2006. He also received the Best Paper Award from the IEEE Globecom 2007. He is currently serving as an Editor for the IEEE Transactions on Wireless Communications, an Associate Editor for the IEEE Transactions on Vehicular Technology, an Associate Editor for the IEEE Commuincation Letters, an Associate Editor for the John Wiley Wireless Commuincations and Mobile Computing Journal, an Editor for the Journal of Computer Systems, Networking, and Communications, an Associate Editor for the John Wiley's Journal on Security and Communications Networks, and a Guest Editor for the IEEE Wireless Communications Magazine (the Special Issue of "Next Generation CDMA vs. OFDMA for 4G Gigabit Wireless"), as well as a member, session chair or chair in numerous committees of renowned conferences, including INFOCOM, MSWiM, QShine, WirelessCom, ICCCN, GLOBECOM and ICC. Dr. Zhang is a Senior Member of the IEEE and a member of the Association for Computing Machinery (ACM). |
|
Back to announcement list