Keynote Speaker

Title

Cognitive Radio Networks: The Future is Friendly

Abstract

Cognitive radio technology solves the problem of the scarcity of radio frequency spectrum utilization. It improves, by opportunistically utilizing radio resources, the issue of spectrum underutilization. This exciting research area has several interesting research problems due to non-uniform spectrum, user mobility, the nature of wireless channel and of course regulatory and financial matters. This presentation attempts to provide an overview of cognitive radio networks and covers a wide range of topics from fundamental challenges and issues in designing cognitive radio systems to the information-theoretic analysis of such systems, spectrum sensing and co-existence issues, adaptive physical layer protocols and link adaptation techniques for cognitive radio, orthogonal frequency division multiple access (OFDMA) and ultra wide band (UWB)-based cognitive radio and cognitive medium access control (MAC) protocols.

Biography

Vijay K. Bhargava received his B.Sc., M. Sc. and Ph.D. degrees from Queen's University, Kingston, Ontario in 1970, 1972 and 1974, respectively. Currently he is a Professor and Head of the Department of Electrical and Computer Engineering at the University of British Columbia. Vijay is a co-author and/or co-editor of four books the latest of which is Cognitive Wireless Communications Networks (Springer: 2007) with Professor Ekram Hossain of the University of Manitoba. In January 2007, he was appointed Editor-in-Chief of the IEEE Transactions on Wireless Communications.
A Fellow of the IEEE, the Engineering Institute of Canada (EIC), the Royal Society of Canada, and the Canadian Academy of Engineering, Vijay has been honoured many times by his colleagues and has received numerous awards.
Vijay is very active in IEEE and has served as the President of the Information Theory Society, Vice President for Regional Activities Board and Director of Region 7 (IEEE Canada). He is a candidate for the office of President-Elect of the IEEE Communications Society.

Title

Reducing Call Costs Acrossing Various International Telecommunications Networks

Abstract

In the existing commercial mobile operation, call setup to an international roaming subscriber is indirectly routed through the home network of the subscriber, which results in the usage of two expensive international telephone trunks. Through multiple mobile phone number assignment, this talk proposes a novel approach that eliminates the non-necessarily international trunk usage, and effectively reduces the network costs for international roaming calls.

Biography

Yi-Bing Lin is Chair Professor and Dean of College of Computer Science, National Chiao Tung University. His current research interests include mobile computing and cellular telecommunications services. Dr. Lin has published over 200 journal articles and more than 200 conference papers. He is the co-author of the books Wireless and Mobile Network Architecture (with Imrich Chlamtac; published by Wiley, 2001),Wireless and Mobile All-IP Networks (with Ai-Chun Pang; published by Wiley, 2005), and Charging for Mobile All-IP Telecommunications (with Sou, S.-I; published by Wiley, 2008). Lin is an IEEE Fellow, ACM Fellow, AAAS Fellow, and IEE Fellow. He is an ISI highly-cited author (top 1%) in Computer Science area.