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IEICE TRANSACTIONS on Fundamentals

New Restricted Isometry Condition Using Null Space Constant for Compressed Sensing

Haiyang ZOU, Wengang ZHAO

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Summary :

It has been widely recognized that in compressed sensing, many restricted isometry property (RIP) conditions can be easily obtained by using the null space property (NSP) with its null space constant (NSC) 0<θ≤1 to construct a contradicted method for sparse signal recovery. However, the traditional NSP with θ=1 will lead to conservative RIP conditions. In this paper, we extend the NSP with 0<θ<1 to a scale NSP, which uses a factor τ to scale down all vectors belonged to the Null space of a sensing matrix. Following the popular proof procedure and using the scale NSP, we establish more relaxed RIP conditions with the scale factor τ, which guarantee the bounded approximation recovery of all sparse signals in the bounded noisy through the constrained l1 minimization. An application verifies the advantages of the scale factor in the number of measurements.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E105-A No.12 pp.1591-1603
Publication Date
2022/12/01
Publicized
2022/06/20
Online ISSN
1745-1337
DOI
10.1587/transfun.2021EAP1175
Type of Manuscript
PAPER
Category
Information Theory

Authors

Haiyang ZOU
  China West Normal University
Wengang ZHAO
  Southwest University of Science and Technology

Keyword