中国医疗设备2018，Vol.33Issue(3)：15-17,21,4.DOI:10.3969/j.issn.1674-1633.2018.03.004
一种变步长LMS算法提取胎儿心电
A Kind of Variable Step Size LMS Algorithm for Extracting Fetal ECG
摘要
Abstract
Objective In order to solve the contradiction between least mean square (LMS) algorithm and convergence rate or steady-state error, we proposed a variable step-size LMS algorithm to extract fetal electrocardiograph (ECG). Methods Firstly, we used the maternal abdominal signal as the original input signal, and the mother chest signal was used as a reference input signal. Both of these two-channel signals were preprocessed to remove the baseline drift. Then we used the algorithm designed in this paper to extract fetal ECG. Results The experimental results showed that the proposed algorithm was superior to LMS in terms of convergence speed and tracking ability, and could extract clear fetal ECG. Conclusion The improved algorithm can extract a relatively clear fetal ECG.关键词
LMS算法/收敛速度/稳态误差/胎儿心电Key words
least mean square algorithm/convergence speed/steady state error/fetal electrocardiogram分类
医药卫生引用本文复制引用
袁丽,吴水才,袁延超,高小峰..一种变步长LMS算法提取胎儿心电[J].中国医疗设备,2018,33(3):15-17,21,4.基金项目
国家自然科学基金项目(71661167001 （）
71781260096) （）
