Picture of smart phone in human hand

World leading smartphone and mobile technology research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers from the Department of Computer & Information Sciences involved in researching exciting new applications for mobile and smartphone technology. But the transformative application of mobile technologies is also the focus of research within disciplines as diverse as Electronic & Electrical Engineering, Marketing, Human Resource Management and Biomedical Enginering, among others.

Explore Strathclyde's Open Access research on smartphone technology now...

Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering

Weiss, Stephan and Lampe, Lutz and Stewart, Robert (1998) Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. In: 1st International Symposium on Communication Systems and Digital Signal Processing, 1998-04-06 - 1998-04-08.

[img]
Preview
PDF
weiss98a.pdf - Accepted Author Manuscript

Download (91kB) | Preview

Abstract

In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.