Liu, Wei and Weiss, S. and Hanzo, L. (2002) Partially adaptive broadband beamforming with a subband selective tranformation matrix. In: IEEE Sensor Array and Multichannel Signal Processing Workshop, 2002-08-04 - 2002-08-06, Rosslyn, Virginia.
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A partially adaptive generalized sidelobe canceller (GSC) with a novel spatially/spectrally subband-selective transformation matrix is proposed. The row vectors of this matrix constitute a series of bandpass filters, which separate the blocking matrix outputs into components of different DOAs and frequencies. This results in bandlimited spectra of its outputs, which is further exploited by subband decomposition and discarding the low-pass subbands appropriately prior to running independent unconstrained adaptive filters in subbands. By these steps the computational complexity of the system is greatly reduced. Additionally, a faster convergence speed is achieved by joint spatial and spectral decorrelation.
|Item type:||Conference or Workshop Item (Paper)|
|Keywords:||adaptive arrays , band pass filters, adaptive filters , array signal processing , Electrical engineering. Electronics Nuclear engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||03 May 2012 15:11|
|Last modified:||22 May 2015 09:08|
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