Cross Low-Dimension Pursuit for Sparse Signal Recovery from Incomplete Measurements Based on Permuted Block Diagonal Matrix

Zaixing HE, Takahiro OGAWA, Miki HASEYAMA
2011 IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences  
Zaixing HE †a) , Student Member, Takahiro OGAWA †b) , and Miki HASEYAMA †c) , Members SUMMARY In this paper, a novel algorithm, Cross Low-dimension Pursuit, based on a new structured sparse matrix, Permuted Block Diagonal (PBD) matrix, is proposed in order to recover sparse signals from incomplete linear measurements. The main idea of the proposed method is using the PBD matrix to convert a high-dimension sparse recovery problem into two (or more) groups of highly low-dimension problems and
more » ... sly recover the entries of the original signal from them in an iterative way. By sampling a sufficiently sparse signal with a PBD matrix, the proposed algorithm can recover it efficiently. It has the following advantages over conventional algorithms: (1) low complexity, i.e., the algorithm has linear complexity, which is much lower than that of existing algorithms including greedy algorithms such as Orthogonal Matching Pursuit and (2) high recovery ability, i.e., the proposed algorithm can recover much less sparse signals than even 1 -norm minimization algorithms. Moreover, we demonstrate both theoretically and empirically that the proposed algorithm can reliably recover a sparse signal from highly incomplete measurements. key words: sparse recovery, sparsest solution, compressed sensing, permuted block diagonal matrix, greedy algorithms, orthogonal matching pursuit, 1 -norm minimization, basis pursuit
doi:10.1587/transfun.e94.a.1793 fatcat:pd4gfilz75ed7agidiniulic74