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An efficient parallel Krylov-Schur method is proposed for computing eigenvalues and eigenvectors related with oscillating modes of low damping for large-scale power systems. Improved restarting techniques are explained and demonstrated in details, which focus on a refined selection of kept subspace in contraction and a reliable mechanism of no missing target eigenvalues. Cayley and shift-invert transforms...
A parallel interference cancellation detection algorithm based on QR decomposition for VBLAST-OFDM system is proposed in this paper. It makes use of the first detection layer and separates it into several parallel branches. The detected signal is eliminated successively from the received vector of each branch, after that, other signals are detected by using QR factorization, but only the last detected...
In this paper, we proposed a new scheme for face recognition, which hybridizes wavelet transform (WT), non-negative matrix factorization with sparseness constraints (NMFs) and support vector machine (SVM) with relative difference space (RDS) method. Firstly, low frequency subband images are extracted from original face image with 2D wavelet transform. Secondly, the images with low frequency information...
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