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IEICE TRANSACTIONS on Fundamentals

Improved Analysis for SOMP Algorithm in Terms of Restricted Isometry Property

Xiaobo ZHANG, Wenbo XU, Yan TIAN, Jiaru LIN, Wenjun XU

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Summary :

In the context of compressed sensing (CS), simultaneous orthogonal matching pursuit (SOMP) algorithm is an important iterative greedy algorithm for multiple measurement matrix vectors sharing the same non-zero locations. Restricted isometry property (RIP) of measurement matrix is an effective tool for analyzing the convergence of CS algorithms. Based on the RIP of measurement matrix, this paper shows that for the K-row sparse recovery, the restricted isometry constant (RIC) is improved to $delta_{K+1}< rac{sqrt{4K+1}-1}{2K}$ for SOMP algorithm. In addition, based on this RIC, this paper obtains sufficient conditions that ensure the convergence of SOMP algorithm in noisy case.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.2 pp.533-537
Publication Date
2020/02/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.2019EAL2055
Type of Manuscript
LETTER
Category
Digital Signal Processing

Authors

Xiaobo ZHANG
  Zhengzhou University of Light Industry
Wenbo XU
  Beijing University of Posts and Telecommunications
Yan TIAN
  Beijing University of Posts and Telecommunications
Jiaru LIN
  Beijing University of Posts and Telecommunications
Wenjun XU
  Beijing University of Posts and Telecommunications

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