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In recent years there is a growing interest in the study of sparse representation for signals. This article extends this research into a novel model for object classification tasks. In this model, we first apply the non-negative K-SVD algorithm to learning the discriminative dictionaries using very few training samples and then represent a test image as a(More)
In order to improve the convergent speed of the particle swarm optimization (PSO) algorithm in the control of real-time polarization mode dispersion (PMD) compensation, we apply a new gradient method to PSO algorithm in this paper. We call this new algorithm GTPSO. To compare the convergent speed of PSO and GTPSO algorithm, a test is carried out by(More)
A new adaptive polarization mode dispersion PMD compensation method in 80Gbit/s optical communication is proposed. Through the control of DSP, the dithering particle swarm optimization (PSO) algorithm is used to extract the best degree of polarization (DOP), then the DOP is used to compensate three stage PMD of optical fiber.