Blind Separation of Human Heartbeats and Breathing by the use of a Doppler Radar Remote Sensing

• Published in: 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07 Vol. 1; pp. I-333 - I-336
• Main Authors: Petrochilos, N., Rezk, M., Host-Madsen, A., Lubecke, V., Boric-Lubecke, O.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.04.2007
• Subjects: Algorithm design and analysis; Antenna Array; Blind Source Separation; Digital signal processing; Distortion; Doppler radar; Heart beat; Heartbeat Detection; Humans; Independent component analysis; Real Analytical Constant Modulus Algorithm; Remote sensing; Signal processing; Wireless sensor networks
• ISBN: 9781424407279; 1424407273
• ISSN: 1520-6149
• DOI: 10.1109/ICASSP.2007.366684

The combined use of a Doppler radar with digital signal processing technique gives an effective non-invasive remote sensing of heart beat signals. Initial results have showed that the proposed technique is very promising in successfully isolating desired heart beat signals from other mobile objects and other distortion effects characterizing the wireless channel. We concentrate in this paper on the harder problem of separating at low SNR the signals from two subjects in the same room. We show that preliminary results obtained by the real analytical constant modulus algorithm (RACMA) and the independent component analysis (ICA) on experimental data are very promising into this goal.