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Signal Recovery From Random Measurements Via Orthogonal Matching Pursuit

2007/12/01 by Joel A. Tropp, Anna C. Gilbert · 9,713 citations
Computer Science · Engineering · Mathematics · #Algorithm #Basis pursuit #Blind Source Separation Techniques #Combinatorics #Compressed sensing #Computer science #Dimension (graph theory) #Emphasis (telecommunications) #Greedy algorithm #Matching (statistics) #Matching pursuit #Mathematics #Microwave Imaging and Scattering Analysis #SIGNAL (programming language) #Signal processing #Signal reconstruction #Sparse and Compressive Sensing Techniques #Statistics #Telecommunications

paper · doi:10.1109/tit.2007.909108

published in IEEE Transactions on Information Theory 53(12), 4655-4666 (Institute of Electrical and Electronics Engineers)

openalex publication_date 2007/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

This paper demonstrates theoretically and empirically that a greedy algorithm called Orthogonal Matching Pursuit (OMP) can reliably recover a signal withmnonzero entries in dimensiondgiven \rm O(m ln d)random linear measurements of that signal. This is a massive improvement over previous results, which require\rm O(m2)measurements. The new results for OMP are comparable with recent results for another approach called Basis Pursuit (BP). In some settings, the OMP algorithm is faster and easier to implement, so it is an attractive alternative to BP for signal recovery problems.

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