| Paper: | BIO-P4.2 | ||
| Session: | Biomedical Signal Processing II | ||
| Time: | Friday, May 19, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Bio Imaging and Signal Processing: Biomedical signal processing | ||
| Title: | Detection of Multiple Heartbeats Using Doppler Radar | ||
| Authors: | Qin Zhou, Jianhan Liu, Anders Host-Madsen, Olga Boric-Lubecke, Victor Lubecke, University of Hawaii, United States | ||
| Abstract: | Doppler radar life sensing has shown promise in medical and security applications. The current paper considers the problem of determining the number of persons in a given area (e.g., a room) using the Doppler shift due to heartbeat. The signal is weak and time-varying, and therefore poses a complicated signal processing problem. We develop a generalized likelihood ratio test (GLRT) based on a model of the heartbeat, and show that this can be used to distinguish between the presence of 2, 1, or 0 subjects, even with a single antenna. We further extend this to N antennas. The results show that one can expect to detect up to 2N-1 subjects using this technique. | ||
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