Witold Krzymien

Biography

Witold A. KrzymieÅ„ received his MSc (Eng.) and PhD degrees from the PoznaÅ„ University of Technology, PoznaÅ„, Poland, in 1970 and 1978, respectively, both in electrical engineering. He received a Polish national award of excellence for his PhD thesis. Since April 1986 he has been with the Department of Electrical and Computer Engineering at the University of Alberta, where he currently holds the endowed Rohit Sharma Professorship in Communications & Signal Processing. In 1986 he was one of the key research program architects of the newly launched TRLabs, Canada’s largest industry-university-government pre-competitive research consortium in the Information and Communication Technology area, headquartered in Edmonton. His research activity has been closely tied to the consortium ever since. Over the years he has also done collaborative research work with Nortel Networks, Ericsson Wireless Communications, German Aerospace Centre (DLR - Oberpfaffenhofen), Telus Communications, Huawei Technologies and the University of Padova (Italy). He held visiting research appointments at the Twente University of Technology (Enschede, The Netherlands; 1980-1982), Bell-Northern Research (Montréal, Canada; 1993-1994), Ericsson Wireless Communications (San Diego, USA; 2000), Nortel Networks Harlow Laboratories (Harlow, UK; 2001), and the Department of Information Engineering at the University of Padova (2005). His research is currently focused on multi-user MIMO and MIMO-OFDM systems, and multi-hop relaying and network coordination for broadband cellular applications. Dr. KrzymieÅ„ is a Fellow of the Engineering Institute of Canada, and a licensed Professional Engineer in the Provinces of Alberta and Ontario, Canada. He is an Associate Editor of the IEEE Transactions on Vehicular Technology and a member of the Editorial Board of Wireless Personal Communications (Springer). From 1999 to 2005 he was the Chairman of Commission C (Radio Communication Systems and Signal Processing) of the Canadian National Committee of URSI (Union Radio Scientifique Internationale), and from 2000 to 2003 he was the Editor for Spread Spectrum and Multi-Carrier Systems of the IEEE Transactions on Communications. He received the 1991/1992 A.H. Reeves Premium Award from the Institution of Electrical Engineers (U.K.) for a paper published in the IEE Proceedings, Part I. In April 2008 he received the Best Paper Award at the 2008 IEEE Wireless Communications and Networking Conference (WCNC’08).

Research Interest

The scope of Dr. KrzymieÅ„’s research interest and activity primarily encompasses signal processing and radio resource management techniques underlying the evolution of wireless and especially cellular systems and networks towards future broadband systems and networks that in their shorter-term first phase of development are known as the fourth generation cellular. Emphasis of the research is on approaches enabling very high-throughput, spectrally and energy efficient, and flexibly asymmetric packet data access and their role in shaping the future broadband systems. The work attempts to balance methods and solutions of the physical and MAC/RLC (medium access control and radio link control) layers of the system architecture, and those concerned with network layer related problems, such as cooperative relaying and coordinated multipoint transmission/reception, also known as network MIMO (multiple-input multiple-output) technique. An integrated, cross-layer approach is applied in arriving at effective system-level solutions. Current Research Multi-user MIMO (multiple-input multiple-output) and MIMO-OFDM (orthogonal frequency division multiplexing) systems with particular emphasis on cellular downlink transmission. Centralized and distributed reduced-complexity user scheduling and resource allocation algorithms for homogeneous and heterogeneous MIMO wireless networks. Coordinated cellular transmission/reception (network MIMO) to achieve MIMO spatial multiplexing gains in interference-limited cellular systems. Infrastructure-based MIMO relaying for improved coverage and capacity of broadband cellular systems.