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

Constrained adaptive broadband beamforming algorithm in frequency domain

Liu, Wei and Koh, C.L. and Weiss, S. (2004) Constrained adaptive broadband beamforming algorithm in frequency domain. In: Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2004. IEEE, pp. 94-98. ISBN 0-7803-8545-4

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

Abstract

In this paper, the linearly constrained minimum variance (LCMV) beamforming problem is formulated in the frequency domain based on the time-domain formulation of the cost function and the constraints. We then derive a frequency-domain constrained adaptive broadband beam-forming algorithm, which has a much lower computational complexity than the time-domain algorithm, although it suffers from a slower convergence speed, as shown by simulations. It is however an attractive option when the implementation of the time-domain algorithm is prohibitive due to large computational complexity. An alternative implementation of this constrained frequency-domain algorithm using the generalised sidelobe canceller (GSC) structure is also studied.