American University of Beirut Seminar
Non-Parametric Methods for Mitigating Interference in OFDM Receivers
Prof. Brian L. Evans
Engineering Foundation Professor
Dept. of Electrical and Computer Engineering
Wireless Networking and Communications Group
The University of Texas at Austin, Austin, Texas USA
bevans@ece.utexas.edu
In collaboration with PhD students
Ms. Jing Lin
and
Mr. Marcel Nassar
Thursday, August 4, 2011, 12:30-1:30pm, Bechtel Building
Slides
Interference Modeling and Mitigation Project
Abstract
In many cellular, wireless local area network (WLAN) and powerline
communication systems, users experience interference from other users and
switching electronics that is stronger than thermal noise. In such
interference-limited channels, the assumption that additive noise is
Gaussian breaks down, which in turn may require redesign of all receiver
subsystems.
After describing interference sources in the above systems, we model
the interference statistics. We propose ways to reduce interference in
orthogonal frequency division modulation (OFDM) receivers as found in
cellular, WLAN, and powerline communication systems. One method is based
on a sparse representation of the interference observed in null and pilot
tones. The other method jointly estimates data and interference. Using
either method allows the rest of the signal path in the receiver to remain
unchanged.
Biography
Prof. Evans conducts research in signal processing and communication systems.
His research group develops theory and algorithms, as well as design methods and
full-system testbeds. He has published more than 200 peer-reviewed journal and
conference papers, and graduated 19 PhD and 9 MS students. He was elevated to
IEEE Fellow "for contributions in multicarrier communications and image display".
In 1997, he received a US National Science Foundation CAREER Award. In summer
2005, he taught a real-time digital signal processing course at AUB.
Mail comments about this page to
bevans@ece.utexas.edu.