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Algorithms 2013, 6(4), 871-882; doi:10.3390/a6040871

Sparse Signal Recovery from Fixed Low-Rank Subspace via Compressive Measurement

1
School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, China
2
School of Instrumental Science and Engineering, Southeast University, 2 Sipailou, Nanjing, 210096, China
3
School of Information Science and Engineering, Yunnan University, No. 2 North Green Lake Road, Kunming 650091, China
*
Author to whom correspondence should be addressed.
Received: 16 November 2013 / Revised: 11 December 2013 / Accepted: 11 December 2013 / Published: 17 December 2013
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Abstract

This paper designs and evaluates a variant of CoSaMP algorithm, for recovering the sparse signal s from the compressive measurement v = A(Uw+s) given a fixed low-rank subspace spanned by U. Instead of firstly recovering the full vector then separating the sparse part from the structured dense part, the proposed algorithm directly works on the compressive measurement to do the separation. We investigate the performance of the algorithm on both simulated data and video compressive sensing. The results show that for a fixed low-rank subspace and truly sparse signal the proposed algorithm could successfully recover the signal only from a few compressive sensing (CS) measurements, and it performs better than ordinary CoSaMP when the sparse signal is corrupted by additional Gaussian noise. View Full-Text
Keywords: compressive sensing; sparse signal recovery; greedy algorithm; video surveillance compressive sensing; sparse signal recovery; greedy algorithm; video surveillance
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

He, J.; Gao, M.-W.; Zhang, L.; Wu, H. Sparse Signal Recovery from Fixed Low-Rank Subspace via Compressive Measurement. Algorithms 2013, 6, 871-882.

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