Bounded component analysis of linear mixtures: a criterion of minimum convex perimeter
IEEE Transactions on Signal Processing
Semiblind multiuser MIMO channel estimation using capon and MUSIC techniques
IEEE Transactions on Signal Processing
On maximum-likelihood detection and the search for the closest lattice point
IEEE Transactions on Information Theory
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This work studies the problem of recovering a complex signal (source) from an underdetermined linear mixture of bounded sources. We assume some a priori information of the desired signal in the form of a training sequence and complete absence of knowledge from the other sources, except for their bounded character. The main contribution of this letter is the proposal of a bounded component analysis of the training error that tries to condense the relevant information of the observations in a linear estimate of the desired signal. This subspace can be later used for subsequent refined estimation of the signal of interest. Simulations corroborate the good performance of the proposed method in high SNR scenarios.