Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

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.