2009/07/21 by Mihailo Stojnic, Stojnic, Mihailo · 34 citations
Computer Science · Engineering · Mathematics · #Electrical and Bioimpedance Tomography #FOS: Computer and information sciences #Image and Signal Denoising Methods #Information Theory (cs.IT) #Sparse and Compressive Sensing Techniques #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.0907.3666
arxiv created 2009/07/21 · openalex publication_date 2009/07/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recently, \citeCRT,DonohoPol theoretically analyzed the success of a polynomial ℓ1-optimization algorithm in solving an under-determined system of linear equations. In a large dimensional and statistical context \citeCRT,DonohoPol proved that if the number of equations (measurements in the compressed sensing terminology) in the system is proportional to the length of the unknown vector then there is a sparsity (number of non-zero elements of the unknown vector) also proportional to the length of the unknown vector such that ℓ1-optimization succeeds in solving the system. In this paper, we provide an alternative performance analysis of ℓ1-optimization and obtain the proportionality constants that in certain cases match or improve on the best currently known ones from \citeDonohoPol,DT.