摘要
本文首先建立了心电信号模型,然后分别采用了最小均方(LMS)算法和小波变换模极大值算法,从腹部混和信号中提取胎儿心电信号,仿真结果表明基于小波变换模极大值提取胎儿信号时,其性能明显优于LMS算法,具有收敛速度快,在低信噪比下仍然适用的特点。
In this paper,we established a model of ECG first,then used two types of algorithm: LMS algorithm and wavelet algorithm.to extract the fetal electrocardiogram (ECG) from the composite abdominal signal. The simulation results show that: when we extract FECG using wavelet algorithm ,its performance is superior to LMS algorithm, it has a fast convergence, and it still can be used in low signal to noise ratio.
出处
《微计算机信息》
2009年第9期212-213,190,共3页
Control & Automation
基金
基金申请人:万红
项目名称:孕期胎儿心电信号提取方法的研究
颁发部门:河南省教育厅(2007510020)