Authors
Justin Ziniel, Philip Schniter
Publication date
2011/11
Conference
Proc. 45th Asilomar Conf. on Signals, Systems, and Computers (SS&C)
Description
In this work, a Bayesian approximate message passing algorithm is proposed for solving the multiple measurement vector (MMV) problem in compressive sensing, in which a collection of sparse signal vectors that share a common support are recovered from undersampled noisy measurements. The algorithm, AMP-MMV, is capable of exploiting temporal correlations in the amplitudes of non-zero coefficients, and provides soft estimates of the signal vectors as well as the underlying support. Central to the proposed approach is an extension of recently developed approximate message passing (AMP) techniques to the amplitude-correlated MMV setting. Aided by these techniques, AMP-MMV offers a computational complexity that is linear in all problem dimensions. In order to allow for automatic parameter tuning, an expectation-maximization algorithm that complements AMP-MMV is described. Finally, a numerical …
Total citations
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Scholar articles
J Ziniel, P Schniter - 2011 Conference Record of the Forty Fifth Asilomar …, 2011