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Mixed Error Variable Step-Size Algorithm with Constrained Function

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Abstract

The convergence, robustness and steady-state performance are three key points to consider when evaluating variable step-size algorithms. The theoretical depth of the algorithm, the stability of step-size and the performance analysis all affect these key points. Based on these points, a novel variable step-size algorithm was derived from a steady-state mixed error cost function. The algorithm was developed according to basic theoretical formulas and provides a certain level of theoretical depth. In addition, to balance the relation between convergence and robustness, an improved restricted method that uses different restricted parameters at different stages was combined with the step-size algorithm. This method maintains the convergence speed while reducing fluctuations. Furthermore, the proposed algorithm eliminates numerous parameters and approaches the optimal step-size without increasing the computational burden. Weight misalignment, stability and complexity performance analyses are also provided. According to the experimental results and analyses, the proposed algorithm has a good performance.

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Data availability statement

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This letter was funded by projects including the Scientific Research Foundation for the Highlevel Personnel of Nanjing Institute of Technology (grant: YKJ2019106 and YKJ202042) and the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (grant: 20KJD510002).

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  1. Nanjing Institute of Technology, Nanjing city, 211167, China

    Yufei Han & Yao Li

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  1. Yufei Han
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  2. Yao Li
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Correspondence to Yufei Han.

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Han, Y., Li, Y. Mixed Error Variable Step-Size Algorithm with Constrained Function. Circuits Syst Signal Process 41, 5307–5318 (2022). https://doi.org/10.1007/s00034-022-02015-5

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  • DOI: https://doi.org/10.1007/s00034-022-02015-5

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