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Subspace pursuit embedded in orthogonal matching pursuit
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0003-2638-6047
2012 (engelsk)Inngår i: TENCON 2012 - 2012 IEEE Region 10 Conference, IEEE , 2012, s. 6412325-Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Orthogonal Matching Pursuit (OMP) is a popular greedy pursuit algorithm widely used for sparse signal recovery from an undersampled measurement system. However, one of the main shortcomings of OMP is its irreversible selection procedure of columns of measurement matrix. i.e., OMP does not allow removal of the columns wrongly estimated in any of the previous iterations. In this paper, we propose a modification in OMP, using the well known Subspace Pursuit (SP), to refine the subspace estimated by OMP at any iteration and hence boost the sparse signal recovery performance of OMP. Using simulations we show that the proposed scheme improves the performance of OMP in clean and noisy measurement cases.

sted, utgiver, år, opplag, sider
IEEE , 2012. s. 6412325-
Emneord [en]
Compressed sensing, Greedy Pursuits, Sparse Recovery
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-118767DOI: 10.1109/TENCON.2012.6412325Scopus ID: 2-s2.0-84873943598ISBN: 978-146734822-5 (tryckt)OAI: oai:DiVA.org:kth-118767DiVA, id: diva2:608129
Konferanse
2012 IEEE Region 10 Conference: Sustainable Development Through Humanitarian Technology, TENCON 2012, 19 November 2012 through 22 November 2012, Cebu
Merknad

QC 20130226

Tilgjengelig fra: 2013-02-26 Laget: 2013-02-26 Sist oppdatert: 2013-02-26bibliografisk kontrollert

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