SPEAKERS
Victor C.M. Leung
Biography
Victor C. M. Leung received the B.A.Sc. (Hons.) degree in electrical engineering from the University of British Columbia (U.B.C.) in 1977, and was awarded the APEBC Gold Medal as the head of the graduating class in the Faculty of Applied Science. He attended graduate school at U.B.C. on a Natural Sciences and Engineering Research Council Postgraduate Scholarship and completed the Ph.D. degree in electrical engineering in 1981.
From 1981 to 1987, Dr. Leung was a Senior Member of Technical Staff at MPR Teltech Ltd. in Canada, specializing in the planning, design and analysis of satellite communication systems. In 1988, he was a Lecturer in the Department of Electronics at the Chinese University of Hong Kong. He returned to U.B.C. as a faculty member in 1989, and currently holds the positions of Professor and TELUS Mobility Research Chair in Advanced Telecommunications Engineering in the Department of Electrical and Computer Engineering. He is a member of the Institute for Computing, Information and Cognitive Systems at U.B.C. He also holds adjunct/guest faculty appointments at several universities including the Hong Kong Polytechnic University and Beijing University of Posts and Telecommunications. Dr. Leung has co-authored more than 650 technical papers in international journals and conference proceedings, and several of these papers had been selected for best paper awards. His research interests are in the broad areas of wireless networks and mobile systems. Dr. Leung is a registered professional engineer in the Province of British Columbia, Canada. He is a Fellow of IEEE, a Fellow of the Engineering Institute of Canada, and a Fellow of the Canadian Academy of Engineering. He was a Distinguished Lecturer of the IEEE Communications Society. He is serving on the editorial boards of the IEEE Transactions on Computers, IEEE Wireless Communications Letters, Computer Communications, as well as several other journals. Previously, he has served on the editorial boards of the IEEE Journal on Selected Areas in Communications – Wireless Communications Series, the IEEE Transactions on Wireless Communications, the IEEE Transactions on Vehicular Technology, and the Journal of Communications and Networks. He has guest-edited many journal special issues, and served on the organizing committees and technical program committees of numerous international conferences. He is a recipient of an IEEE Vancouver Section Centennial Award and a 2012 UBC Killam Research Prize.
Abstract
Wireless access architectures employing femto- and pico-cell base-stations/access points can reduce power consumption and enhance wireless spectrum utilization by shortening the links and exploiting cooperative and cognitive mechanisms, but co-ordinations between base-stations or access points may incur large overheads. We present a novel architecture that exploits wireless-optical convergence for next generation broadband wireless access employing fibre-connected massively distributed antennas (BWA-FMDA). In this architecture, a large number of distributed antennas are connected via radio over fibres (RoF) to a centralized processing entity to minimize the communication overhead of system co-ordination. The coverage area of the proposed BWA-FMDA system can range from a few tens of square meters in homes and office environments, delivered via IEEE 802.11a/g/n or femto-cell hotspot solutions, to several square kilometers supporting last-mile technologies such as WiMAX, LTE, and LTE-A using pico- and micro-base-stations. This new architecture leads to many new research problems, including the fundamental performance limits of massively distributed antenna systems, improved measurement-based channel models involving massively distributed antennas, advanced radio resource management and access control schemes that approach the performance limits in realistic propagation environments, and improved opto-electronic transceivers designs for low cost active optical cables suitable for RoF applications. In this talk we demonstrate the potentials of BWA-FMDA architecture by considering its application in license-free and licensed wireless systems. We present the cognitive WLAN over fibre (CWLANoF) system, which applies the BWA-FDMA architecture in the license-free ISM band for cooperative spectrum sensing, interference avoidance/mitigation and dynamic channel assignment. In licensed bands, we demonstrate the application of BWA-FMDA to create coordinated multiple point (CoMP) operations of femto-cells, which provides higher spectral efficiency (bps/Hz) and higher energy efficiency (bits/Joule) to enable green communications. Simulation results and address potential research issues are presented for each scenario. We conclude with a short discussion on our current effort to develop and deploy a BWA-FMDA testbed based on commercially available equipment.
Laurent Marchand
Biography
Since 2012, Laurent Marchand is a system expert in the Ericsson Cloud System Management unit in Montreal. He is involved with the network and system architecture of Ericsson distributed cloud infrastructure. From 1998 to 2012, Laurent Marchand was the Technical Director of the Corporate Ericsson Research unit in Montreal, Canada. Prior to joining the Research Unit, Mr. Marchand was Systems Manager and technical member in the Ericsson TDMA Business Unit where he led Ericsson’s effort in the successful development and deployment of the Digital-AMPS cellular network product. Before joining Ericsson in 1991, Mr. Marchand was head of research and development for a telecom equipment supplier in Ottawa where he worked on the development of a new generation digital switches and on Network Management applications. While a Research Associate at École Polytechnique de Montréal in 1983, he conducted research in optimum design program for the aerospace industry.
Mr. Marchand is a member of “Ordre des Ingénieurs du Québec” and has been working with Wireless and Internet Technology since 1989 and with computers since 1977. He is a BSC/MSC graduate in Science in Engineering from École Polytechnique de Montréal.
Abstract
Cloud computing is the buzzword of the day. It promises lower cost and more environmentally-friendly infrastructure than traditional dedicated servers, specialized boxes, or conventional "hosted-oriented" datacenters. In this presentation, we are providing a brief description of the main aspects associated with a Telco Cloud infrastructure which seem to motivate a growing number of mobile operators to consider moving from the current telecom-style infrastructure, consisting in various telecom servers and specialized gateway nodes, toward a single COTS-based Telco-cloud infrastructure. We will also cover related trends such as Network Functions Virtualization, and Software Defined Networking, along with their associated impacts on M2M communication. Cloud computing is rapidly becoming a paradigm shift in the mobile industry. Academic and private sectors must contribute to the establishment of a cloud infrastructure which is open, environmentally friendly, reliable and secure.