Blind source separation method based on membrane computing and PSO algorithm

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (17) : 63-71.

SUN Yuan1,YANG Feng1,ZHENG Jing2,XU Maoxuan1,PEI Shuojin2

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Abstract

In order to solve problems of slower convergence and lower separating performance of the existing blind source separation methods,a new method based on membrane computing (MC) and particle swarm optimization (PSO) was proposed. The separated signals’neg-entropy was taken as the fitness function of PSO. Particles were uniformly distributed into each elementary membrane. The velocity and position of population particles were updated with a particle own optimal position and the population global optimal position. The optimal solution to PSO was used to adjust step function of blind source separation and then separate signals. The proposed algorithm simplified inertia weight’s choosing to ensure the accuracy of PSO local search and satisfy the variety of global search. The simulation and actual application showed that mixing signals can be well separated with this new method and the premature convergence problem of PSO can be avoided; this new method has a faster convergence speed and a more excellent separating performance.

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blind source separation (BSS) / membrane computing (MC) / particle swarm optimization (PSO) / inertia weight

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SUN Yuan1,YANG Feng1,ZHENG Jing2,XU Maoxuan1,PEI Shuojin2. Blind source separation method based on membrane computing and PSO algorithm[J]. Journal of Vibration and Shock, 2018, 37(17): 63-71

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