基于QR分解最小二乘算法消除ECG中工频干扰  

Study on QRD-LS Algorithm to Eliminate Power Line Interference in ECG

作　　者：王淑艳[1] 赵淑舫[1] 

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《中国民航大学学报》2007年第5期22-24,共3页Journal of Civil Aviation University of China

基　　金：天津市自然基金项目(06YFJMJC00800);中国民航大学科研启动基金项目(06qd09s)

摘　　要：研究了一种基于QR分解最小二乘(QRD-LS)算法消除ECG中工频干扰的方法,此方法采用基于数据域处理的QRD-LS算法进行权值的训练和更新,其直接针对输入数据矩阵进行递推,且可用并行Systolic处理结构高效地实现。并且能自适应消除工频干扰,提高信干比,仿真结果验证了理论。A method which eliminates power line interference in the ECG based on QRD-LS algorithm is studied. QLD-LS algorithm which is recursive least-squares minimization using systolic arrays is employed in order to adjust the weight vector. Compared with LMS algorithm,it has good robustness. Because of adopting adaptive notch filter,it can automatically remove the power line interference in the ECG,and can also improve the signal-to-interference ratio. Simulated examples confirm the results.

关 键 词：心电图 工频干扰 QRD-LS算法 自适应陷波滤波器 

分 类 号：TN973.3[电子电信—信号与信息处理]