University of Minnesota
University Relations
myU OneStop

Go to unit's home.

Home | Seminars and Symposia | Past seminars/symposia: Friday, April 26, 2013

DTC Seminar Series

Questions (and some answers) on L1 Subspace Signal Processing


Dimitris A. Pados
State University of New York at Buffalo

Friday, April 26, 2013
1:30 p.m. reception
2:00 p.m. seminar

401/402 Walter Library

PadosSubspace-based (L2-norm) algorithms have been lifeblood for the field of signal processing since its inception, with defining applications in detection and estimation (direction-of-arrival and frequency estimation, reduced-rank filtering and filter estimation, data dimensionality reduction, etc.). We will ask questions on L1 subspace signal processing. In particular, what is L1 subspace signal processing or — better said — how can it be defined? What does it do, what utility does it have? Why hasn't it happened yet? In general, answers are hard to come. Some answers — very few — will be provided, however. They feed optimism that a new line of L1 subspace signal processing is possible and modern outlier-resistant machine learning principles may be transferred under the well-developed umbrella of mainstream signal processing research.


Dimitris A. Pados was born in Athens, Greece, on October 22, 1966. He received the Diploma degree in computer science and engineering (five-year program) from the University of Patras, Greece, in 1989, and the Ph.D. degree in electrical engineering from the University of Virginia, Charlottesville, VA, in 1994. From 1994 to 1997, he held an Assistant Professor position in the Department of Electrical and Computer Engineering and the Center for Telecommunications Studies, University of Louisiana, Lafayette. Since August 1997, he has been with the Department of Electrical Engineering, State University of New York at Buffalo, where he is presently a Professor. He served the Department as Associate Chair in 2009-2010. Dr. Pados was elected three times University Faculty Senator (terms 2004-06, 2008-10, 2010-12), served on the Faculty Senate Executive Committee (2009-10) and serves on the University Budget Priorities Committee. His research interests are in the general areas of communication theory and adaptive signal processing, with applications to interference channels and signal waveform design, secure wireless communications, cognitive radios and networks. Dr. Pados is a member of the IEEE Signal Processing, Communications, Information Theory, and Computational Intelligence Societies. He served as an Associate Editor for the IEEE Signal Processing Letters (2001-2004) and the IEEE Transactions on Neural Networks (2001-2005). He received a 2001 IEEE Intern. Conference on Telecommunications best paper award, the 2003 IEEE Transactions on Neural Networks Outstanding Paper Award, and the 2010 IEEE Intern. Communications Conference Best Paper Award in Signal Processing for Communications for articles that he coauthored with students and colleagues. Professor Pados is a recipient of the 2009 SUNY-system-wide Chancellor's Award for Excellence in Teaching and the 2011 University at Buffalo Exceptional Scholar — Sustained Achievement Award.