MSE behavior of biomedical event-related filters

被引：16

作者：

Barros, AK

Ohnishi, N

机构：

[1] Department of Information Engineering, Graduate School of Engineering, Nagoya University

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1997年 / 44卷 / 09期

关键词：

adaptive filter; event-related signal; impedance cardiography; mean-squared error;

D O I：

10.1109/10.623054

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The mean-squared error (MSE) behavior for Fourier linear combiner (FLC)-based filters is analyzed, using the independence assumption. The advantage of this analysis is its simplicity compared with previous results. The MSE transient behavior for this kind of filters is also presented for the first time. Moreover, a time-varying sequence for the least mean square (LMS) algorithm step-size is proposed to provide fast convergence with small misadjustment error. It is shown that for this sequence, the MSE behaves better as the input signal-to-noise ratio (SNR) decreases, but increases with the number of harmonics. Lastly, we make a brief analysis on the nonstationary behavior of these filters, and again we find simple expressions for the MSE behavior.

引用

页码：848 / 855

页数：8

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