摘要
研究了LMS自适应滤波器在动态心电信号去噪中的应用。提出了一种适合动态心电信号预处理的变步长LMS改进算法,该算法用误差信号对期望信号的相对误差的平方根来调节步长。实验表明,这种改进滤波器在收敛速度和信噪比两方面都优于固定步长的滤波器。
The application of a LMS adaptive filter on dynamic electrocardiogram（DCG） de-noising is studied.A variable step size LMS improved algorithm is proposed,which is suitable for signal preprocessing of DCG.It adjusts step size with square root of relative error：error to expectations.The experiments show that the improved filter is better than fixed-step filter in both convergence speed and SNR.
出处
《微计算机应用》
2011年第10期76-80,共5页
Microcomputer Applications
