On Friday May 2-nd 2014 14:00 in Tallinn University of Technology, room #: II-102

Equalization and Adaptation of Nonlinear Systems

V John Mathews
Department of Electrical & Computer Engineering
University of Utah
Salt Lake City, UT 84112

Abstract
This talk provides a tutorial introduction to nonlinear signal processing with emphasis on equalization of nonlinear distortions in practical problems and adaptation of nonlinear system models. In the first part of the talk, we will discuss efficient approaches to inversion and equalization of a broad class of nonlinear systems. We will start by looking at exact inverses of nonlinear systems, but stable implementations of such systems may not exist. We will then describe approximate equalizer architectures that are systolic and operate in a stable manner. Examples of applying the equalizers in audio applications will also be shown. The second part of the talk will overview adaptive algorithms for identifying linear-in-the parameters nonlinear systems. Among the approaches discussed will be a method whose computational complexity involves a single multiplication and two additions per input sample, regardless of the complexity of the model.
Prof. V.John Mathews biography