A normalized data-reusing least-mean-square algorithm of noise cancellation for magnetocardiography

• 来源期刊: 中国物理（英文版）
• 关键词: magnetocardiography noise suppression
• 年，卷（期）: 2004,（11）
• 页码范围: 1820-1825
• 页数: 6页
• 语种: 英文

摘要

An adaptive filter based on Data-Reusing Least-Mean-Square algorithm has been proposed and applied in magnetocardiography (MCG) to suppress ambient noise. Numerical simulation studies indicate that the adaptive filter is a powerful noise suppresser for correlated interferences, especially for those with amplitude changing and time delay.Also the filter has a wide frequency bandwidth. With this filter, the signal-to-noise ratio of an MCG is improved to the intrinsic noise level. The periodic average method for further improvement of the noise level in MCG is also discussed.