Abstract
The hard thresholding technique plays a vital role in the development of algorithms for sparse signal recovery. By merging this technique and heavy-ball acceleration method which is a multi-step extension of the traditional gradient descent method, we propose the so-called heavy-ball-based hard thresholding (HBHT) and heavy-ball-based hard thresholding pursuit (HBHTP) algorithms for signal recovery. It turns out that the HBHT and HBHTP can successfully recover a k-sparse signal if the restricted isometry constant of the measurement matrix satisfies δ3k<0.618 and δ3k<0.577, respectively. The guaranteed success of HBHT and HBHTP is also shown under the conditions δ2k<0.356 and δ2k<0.377, respectively. Moreover, the finite convergence of HBHTP and stability of the two algorithms are also established in this paper. Simulations on random problem instances are performed to compare the performance of the proposed algorithms and several existing ones. Empirical results indicate that the HBHTP performs very comparably to a few existing algorithms and it takes less average time to achieve the signal recovery than these existing methods.
Original language | English |
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Article number | 115264 |
Journal | Journal of Computational and Applied Mathematics |
Volume | 430 |
DOIs | |
Publication status | Published - 1 Oct 2023 |
Keywords
- Compressed sensing
- Hard thresholding algorithm
- Heavy-ball method
- Phase transition
- Restricted isometry property
- Sparse signal recovery
ASJC Scopus subject areas
- Computational Mathematics
- Applied Mathematics