Denoising of BCG Signal using Multi Resolution Analysis

Ballistocardiography is the non-invasive measurement of mechanical movement of the blood vessels as a result of cardiac ejection of the blood. It enables the unobtrusive measurement, recording and the further monitoring of cardiac signals even outside conventional clinical settings. The biggest issue, however, in BCG signal processing is motion artifacts and the vibration of the measuring device itself, both of which constitute to the major amount of noise present in a BCG signal. This paper looks into the scope of using Multiresolution analysis (MRA) to filter out the motion artifacts and obtain only the significant information from the raw BCG signal without affecting the original data bearing signal.