Abstract
Variable step size norm-constrained adaptive filtering algorithms are proposed in the paper. A variable step size is derived by minimizing the variance of the noise-free a posterior error. Thus, the update equation can obtain a reasonable step size at each iteration. Due to the introduction of variable step size, the proposed algorithms based on the constrained conditions of \(L_{1}\) and \(L_{0}\) norm have a significant advantage that the convergence rate is faster than some well-known algorithms in the sparse system. The simulation results illustrate the good performance of the proposed algorithms.
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This work was partially supported by National Science Foundation of People’s Republic of China (Grants: 61571374, 61271340, and 61433011).
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Shi, L., Zhao, H. Variable Step Size Norm-Constrained Adaptive Filtering Algorithms. Circuits Syst Signal Process 36, 4278–4291 (2017). https://doi.org/10.1007/s00034-017-0506-9
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DOI: https://doi.org/10.1007/s00034-017-0506-9