Koh, C.L. and Weiss, S. and Peterson, J.M. and Bharitkar, S. (2005) Self-orthogonalizing overlap-save GSC. In: 39th Asilomar Conference on Signals, Systems and Computers, 1900-01-01.
Full text not available in this repository. (Request a copy from the Strathclyde author)Abstract
This paper discusses a computationally inexpensive and fast converging approach to broadband beamforming. Exemplarily utilising the generalised sidelobe canceller (GSC), accurate low-cost implementations in the DFT domain based on overlap-save techniques have been previously suggested, which however suffer from slow convergence when used in combination with the least mean squares algorithm. To overcome this limitation, the beamformer proposed here exploits decorrelation of the input signal within the overlap-save architecture. By inclusion of a self-orthogonalizing component into the adaptive algorithm, the eigenvalue spread of the covariance matrix of the input signal is reduced, thereby increasing the adaptation rate. Simulation results indicate that the convergence speed of the proposed beamformer is comparable to a time domain realisation, albeit at a much reduced cost.
| Item type: | Conference or Workshop Item (Paper) |
|---|---|
| ID code: | 37805 |
| Keywords: | broadband beamforming, generalised sidelobe canceller, gsc, dft domain, overlap-save techniques, self-orthogonalizing, Electrical engineering. Electronics Nuclear engineering |
| Subjects: | Technology > Electrical engineering. Electronics Nuclear engineering |
| Department: | Faculty of Engineering > Electronic and Electrical Engineering |
| Related URLs: | |
| Depositing user: | Pure Administrator |
| Date Deposited: | 22 Feb 2012 14:30 |
| Last modified: | 04 Oct 2012 17:25 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/37805 |
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