胎儿心电信号提取算法研究

Research about Extraction of Fetal ECG

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.