Year: 2016
Author: Anping Liao, Jiaxin Xie, Xiaobo Yang, Peng Wang
Journal of Computational Mathematics, Vol. 34 (2016), Iss. 1 : pp. 70–86
Abstract
This paper aims to investigate sufficient conditions for the recovery of sparse signals via the orthogonal matching pursuit (OMP) algorithm. In the noiseless case, we present a novel sufficient condition for the exact recovery of all $k$-sparse signals by the OMP algorithm, and demonstrate that this condition is sharp. In the noisy case, a sufficient condition for recovering the support of $k$-sparse signal is also presented. Generally, the computation for the restricted isometry constant (RIC) in these sufficient conditions is typically difficult, therefore we provide a new condition which is not only computable but also sufficient for the exact recovery of all $k$-sparse signals.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/jcm.1510-m2015-0284
Journal of Computational Mathematics, Vol. 34 (2016), Iss. 1 : pp. 70–86
Published online: 2016-01
AMS Subject Headings:
Copyright: COPYRIGHT: © Global Science Press
Pages: 17
Keywords: Compressed sensing Sparse signal recovery Restricted orthogonality constant (ROC) Restricted isometry constant (RIC) Orthogonal matching pursuit (OMP).
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