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Variable step-size sign algorithm against impulsive noises

机译:脉冲噪声的可变步长符号算法

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摘要

This paper proposes a new variable step-size sign algorithm through the minimisation of mean-square deviation (MSD). As it is difficult to obtain the MSD accurately, the upper bound of the MSD is derived for calculating the step size at each iteration. The proposed algorithm is not only robust to impulsive noises, but also has improved filter performance in aspects of convergence rate and steady-state estimation error owing to the proposed variable step-size strategy. The simulation results verify that the proposed algorithm has better performance than the existing algorithms in a system-identification scenario in the presence of impulsive noises.
机译:本文通过最小化均方差(MSD)提出了一种新的可变步长符号算法。由于难以准确获得MSD,因此推导MSD的上限以计算每次迭代的步长。所提出的算法不仅对脉冲噪声具有鲁棒性,而且由于所提出的可变步长策略,在收敛速度和稳态估计误差方面都有改进的滤波器性能。仿真结果证明,在存在脉冲噪声的系统识别场景下,该算法具有比现有算法更好的性能。

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