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- W1877508920 abstract "There have been many matching pursuit algorithms (MPAs) which handle the sparse signal recovery problem a.k.a. compressed sensing (CS). In the MPAs, the correlation computation step has a dominant computational complexity. In this letter, we propose a new fast correlation computation method when we use some classes of partial unitary matrices as the sensing matrix. Those partial unitary matrices include partial Fourier matrices and partial Hadamard matrices which are popular sensing matrices. The proposed correlation computation method can be applied to almost all MPAs without causing any degradation of their recovery performance. And, for most practical parameters, the proposed method can reduce the computational complexity of the MPAs substantially." @default.
- W1877508920 created "2016-06-24" @default.
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- W1877508920 date "2012-05-18" @default.
- W1877508920 modified "2023-09-27" @default.
- W1877508920 title "Fast Correlation Computation Method for Matching Pursuit Algorithms in Compressed Sensing" @default.
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- W1877508920 doi "https://doi.org/10.48550/arxiv.1205.4139" @default.
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