Publication / RCBTR
Published Date: 2019/03/15
Published By: Dr.Bahador Makki Abadi
Published At: Circuits, Systems, and Signal Processing
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Authors: Ehsan Eqlimi, Bahador Makkiabadi, Nasser Samadzadehaghdam, Hassan Khajehpour, Fahimeh Mohagheghian, Saeid Sanei

Sparse component analysis (SCA) is a popular method for addressing underdetermined blind source separation in array signal processing applications. We are motivated by problems that arise in the applications where the sources are densely sparse (i.e. the number of active sources is high and very close to the number of sensors). The separation performance of current underdetermined source recovery (USR) solutions, including the relaxation and greedy families, reduces with decreasing the mixing system dimension and increasing the sparsity level (k). In this paper, we present a k-SCA-based algorithm that is suitable for USR in low-dimensional mixing systems. Assuming the sources is at most ) sparse where m is the number of mixtures; the proposed method is capable of recovering the sources from the mixtures given the mixing matrix using a subspace detection framework. Simulation results …