抑制多模噪声的变步长NLMS-Newton算法研究Research on NLMS-Newton algorithm with variable step length for multi-mode noise suppression
祁霄,山拜·达拉拜,解倩倩
摘要(Abstract)：
实际生活中产生的多模噪声会对信号产生严重的破坏甚至损失。传统LMS算法不仅收敛速度慢而且存在较大的稳态误差和失调量,故已不能很好地控制噪声。通过分析NLMS算法和Newton算法的优点,提出一种新的NLMS-Newton算法。该算法的收敛速度高,计算复杂度减小,且应用了随信噪比变化的变步长并修正了自相关矩阵,降低了算法收敛后的稳态误差和失调量。通过仿真表明,NLMS-Newton算法在收敛速度及稳态误差等方面都有了较大改善,并且能在很好地抑制多模噪声的同时提取出有用信号。
关键词(KeyWords)： 多模噪声抑制;NLMS算法;Newton算法;NLMS-Newton算法;自相关矩阵;变步长
基金项目(Foundation): 国家自然科学基金资助项目(60971130)~~
作者(Author): 祁霄,山拜·达拉拜,解倩倩
DOI: 10.16652/j.issn.1004-373x.2018.01.011
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