A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix
Liu, W., Weiss, S. and Hanzo, L. (2004) A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix. IEEE Transactions on Antennas and Propagation, 52, (3), 813-820.
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In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by cosine-modulation, and the broadside constraint is incorporated by imposing zeros on the prototype vector appropriately. These columns constitute a series of bandpass filters, which select signals with specific angles of arrival and frequencies. This results in highpass-type bandlimited spectra of the blocking matrix outputs, which is further exploited by subbands decomposition and suitably discarding the low-pass subbands prior to running independent unconstrained adaptive filters in each non-redundant subband. By these steps, the computational complexity of a GSC implementation is greatly reduced compared to fully adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation in both spatial and temporal domains.
|Divisions:||Faculty of Physical and Applied Science > Electronics and Computer Science > Comms, Signal Processing & Control
|Date Deposited:||28 Apr 2004|
|Last Modified:||02 Mar 2012 02:28|
|Contributors:||Liu, W. (Author)
Weiss, S. (Author)
Hanzo, L. (Author)
|Publisher:||IEEE Antennas and Propagation Society|
|Further Information:||Google Scholar|
|ISI Citation Count:||23|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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- A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix. (deposited 28 Apr 2004) [Currently Displayed]
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