Coherence of sensing matrices coming from algebraic-geometric codes
Author(s) -
Seungkook Park
Publication year - 2016
Publication title -
advances in mathematics of communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 26
eISSN - 1930-5346
pISSN - 1930-5338
DOI - 10.3934/amc.2016016
Subject(s) - compressed sensing , mutual coherence , mathematics , hermitian matrix , coherence (philosophical gambling strategy) , upper and lower bounds , algebraic number , matrix (chemical analysis) , algorithm , discrete mathematics , combinatorics , pure mathematics , mathematical analysis , statistics , materials science , composite material
Compressed sensing is a technique which is to used to reconstruct a sparse signal given few measurements of the signal. One of the main problems in compressed sensing is the deterministic construction of the sensing matrix. Li et al. introduced a new deterministic construction via algebraic-geometric codes (AG codes) and gave an upper bound for the coherence of the sensing matrices coming from AG codes. In this paper, we give the exact value of the coherence of the sensing matrices coming from AG codes in terms of the minimum distance of AG codes and deduce the upper bound given by Li et al. We also give formulas for the coherence of the sensing matrices coming from Hermitian two-point codes.
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