A New Method to Estimate the Number of the Sources for Underdetermined Blind Separation Based on Lapulacial Potential Function
Zhang Ye, Yong Fang · Signal Processing · 2009
In this paper,a new method is proposed to estimate the number of the sources for underdetermined blind sources separation (UBSS).Based on the sparse mixture models,the Lapulacial potential function is introduced,and then the number of sources can be obtained by estimating the local maxim of the potential function.In order to increase the robustness to the noise and the sparsity of the sources,the clustering algorithm is exploited to estimate the local maxim of the potential function instead of directly estimating the local maxim of the potential function.The simulation results show the validity of the algorithm.