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- Title
Block-sparse non-uniform norm constraint normalised subband adaptive filter.
- Authors
Wenyuan Wang; Haiquan Zhao
- Abstract
This study proposes a block-sparse non-uniform norm constraint normalised subband adaptive filter (BS-NNCNSAF) for the block-sparse system identification problem, which is obtained by minimising a novel cost function involving the non-uniform mixed l2, p norm like a constraint. It can achieve better performance compared with the existing algorithms in the block-sparse system identification. To further enhance the performance of the algorithm, the shrinkage BS-NNCNSAF (SH-BS-NNCNSAF) algorithm is proposed. The proposed SH-BS-NNCNSAF algorithm is derived by taking the priori and the posteriori subband errors to achieve the time-varying subband step sizes. Finally, simulations have been carried out to verify the performance of proposed algorithms. The simulation results verify that the proposed algorithms improve the performance of the filter, in terms of system identification in sparse systems.
- Subjects
NON-uniform flows (Fluid dynamics); CONSTRAINTS (Physics); ADAPTIVE filters; TIME-varying systems; SIMULATION methods &; models
- Publication
IET Signal Processing (Wiley-Blackwell), 2019, Vol 13, Issue 1, p96
- ISSN
1751-9675
- Publication type
Article
- DOI
10.1049/iet-spr.2018.5153