Underdetermined blind source separation in a time-varying environment

@article{Vielva2002UnderdeterminedBS,
  title={Underdetermined blind source separation in a time-varying environment},
  author={Luis Vielva and Deniz Erdogmus and Carlos Pantale{\'o}n and Ignacio Santamar{\'i}a and J. A. Pereda and Jos{\'e} Carlos Pr{\'i}ncipe},
  journal={2002 IEEE International Conference on Acoustics, Speech, and Signal Processing},
  year={2002},
  volume={3},
  pages={III-3049-III-3052}
}
The problem of estimating n source signals from m measurements that are an unknown mixture of the sources is known as blind source separation. In the underdetermined —less measurements than sources— linear case, the solution process can be conveniently divided in three stages: represent the signals in a sparse domain, find the mixing matrix, and estimate the sources. In this paper we adhere to that approach and parametrize the performance of these stages as a function of the sparsity of the… CONTINUE READING
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