Picture of virus under microscope

Research under the microscope...

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

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

Explore SIPBS research

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.