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Title: $Estimation of Underdetermined BSS Mixing Matrix Based on Sparsity
Abstract: The model of underdetermined blind signal separation(BSS) is put forward,and the sparsity of signals on time domain and frequency domain are stated briefly.Underdetermined BSS based on sparsity generally takes two-step approach,for the core of two-step,the estimation of mixing matrix,several clustering algorithms are summed up in this paper.The merits and drawbacks are compared among these algorithms,for the further research on mixing matrix in the future.