This point out that in order to improve the LMS algorithm performance, the gradient are optimally estimated, or the error signal are nonlinearity processed,these methods are equipollent. 对最速下降法的梯度优化估值和对误差信号非线性处理,是改善LMS算法性能的等同措施。
A new variable step-size LMS adaptive filtering algorithm is presented, which makes use of the intercorrelation function of the relative output error signal to control the new variable step-size. 针对上述问题,提出了一种新的变步长LMS自适应滤波算法,它采用相对的误差互相关函数来控制步长更新。