1. 报告题目：
Recent Advances in Wireless Access for Vehicular Environments (WAVE) Technology and Cognitive Radio Networks
2. 报告人：Dr. Weidong Xiang
3. 时间：2009年5月15日 (星期五) 下午3:00 – 5:00
4. 地点：浙江大学、信息科学与电子工程系、信电楼学术报告厅215室
Abstract:
Wireless access in vehicular environments (WAVE) technology comes into sight as a state-of-the-art solution to contemporary inter-vehicle communications, which is anticipated to be widely applied in the near future to radically improve the transportation environment in the aspects of safety, intelligent management and data exchange services. WAVE systems will fundamentally smooth the progress of Intelligent Transportation Systems (ITS) by providing it with high performance physical platforms. WAVE systems will build upon the IEEE 802.11p standard, which is still active and expected to be ratified in April, 2009. The fast varying and harsh vehicular environment bring about several fresh research topics on the study of WAVE systems, which include mobile channel modeling, the study of Doppler shift, fast synchronizations, quick channel estimate and prediction, capacity evaluation when adopting multiple-input multiple-output (MIMO), smart antenna and beamforming, adaptive modulation, novel network configuration (delay tolerance networks, DTN), effective media access control (MAC) protocols, and robust routing and congestion control schemes. The objective of this presentation is to present recent progresses in this fast developing area spanning from theoretical analysis to testbed setup, and from physical/MAC layers’ enabling technologies to network protocols. These research and implementation activities will be considerably helpful to the design of WAVE by removing major technical barriers and presenting theoretical guidance and perspective. The main topics of this tutorial will cover: 1)5.9GHz mobile-to-mobile/mobile-to-roadside single-input single-output (SISO)/MIMO channel measurement and modeling, channel spatial and temporal characteristics exploration; 2)Doppler shift study, evaluation and estimate, time and frequency synchronizations, channel estimate and prediction; 3)Utilization of MIMO, space-time coding, smart antenna/beamforming, adaptive modulation and coding for WAVE and future IVC systems; 4)MAC protocols for real-time traffic warning message and high-speed data broadcasting; 5)Routing algorithms and congestion control schemes; and 6)Testbed and prototype activities and preliminary experimental results.
Biography:
Weidong Xiang received his M.S.E.E. and Ph.D. degrees from Tsinghua University, Beijing, China, in 1996and 1999, respectively. From 1999 to 2004, he worked as a Postdoctoral Fellow and then a Research Scientist in the Software Radio Laboratory (SRL) at Georgia Institute of Technology, Atlanta, USA. In September 2004, he joined the ECE Department, University of Michigan, Dearborn (UMD), as an Assistant Professor. His research interest includes vehicular networks, software radio and cognitive radio, ultra-wideband (UWB), and wireless networked control systems. He established and leads the Center for Vehicular Communications and Network Laboratory at UMD focusing on wireless access for vehicular environments (WAVE) and UWB technologies and their commercialization. He serves as an Associate Editor/Editor for IEEE Communications Magazine, EURASIP Journal on Wireless Communications and Networking and other Journals. He has successfully held several tutorials in IEEE Globecom, IEEE WCNC, IEEE Tutorial Now and many others. He has published 30+ technical papers in relevant international journals and conferences. He has served as the leading guest editor for a special issue on WAVE technology on EURASIP Journal on Wireless Communications and Networking and the General Chair for WAVE conference 2008. His current research is widely supported by NSF, DoD, Industry companies and University of Michigan.