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...

Overlap-save frequency invariant generalised sidelobe canceller

Koh, C.L. and Weiss, S. (2005) Overlap-save frequency invariant generalised sidelobe canceller. In: 8th International Symposium on Signal Processing and Its Applications, 2005-08-28 - 2005-08-31.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

In this paper, we propose a frequency invariant adaptive broadband beamformer based on an overlap-save frequency domain implementation of the generalised sidelobe canceller (GSC). Broadband signals drawn from a nested array are decomposed into frequency bins which are grouped into octaves. Subsequently, frequency dependent weighting assigned to individual frequency bins restricts the variation in spatial resolution usually associated with broadband arrays of fixed aperture. A GSC beamformer is incorporated to achieve adaptive nulling of interferers, but requires modifications to the constraint equation of the standard GSC in order to account for the frequency-dependent weighting of sensors. Simulation results highlighting the benefits of the proposed approach are presented.