TY - GEN
T1 - Non-Contact Obstructive Sleep Apnea Detection Using 5.8 GHz DSIL Doppler Radar
AU - Amalia, Rima
AU - Arif, Rezki El
AU - Horng, Tzyy Sheng
AU - Hikmah, Nada Fitrieyatul
N1 - Publisher Copyright:
©2025 IEEE.
PY - 2025
Y1 - 2025
N2 - —This paper presents a non-contact approach for monitoring obstructive sleep apnea (OSA) using a 5.8 GHz digital self-injection-locking (DSIL) Doppler radar. Respiratory and cardiac signals were extracted from the radar data and validated against a Vernier respiratory belt and an ECG sensor, yielding MAE/RMSE values of 0.4752 s/0.6251 s for respiration and 0.1844 s/0.2231 s for cardiac intervals. Respiratory rate variability (RRV) was assessed in the time domain, while heart rate variability (HRV) was analyzed across time, frequency, and nonlinear domains. Compared to healthy participants, OSA patients showed markedly higher variability in both RRV and HRV, indicating disrupted breathing patterns and altered cardiac dynamics. These results demonstrate the feasibility of DSIL Doppler radar for simultaneous, non-contact monitoring of respiratory and cardiac activity, highlighting its potential as a practical tool for home-based or long-term OSA assessment.
AB - —This paper presents a non-contact approach for monitoring obstructive sleep apnea (OSA) using a 5.8 GHz digital self-injection-locking (DSIL) Doppler radar. Respiratory and cardiac signals were extracted from the radar data and validated against a Vernier respiratory belt and an ECG sensor, yielding MAE/RMSE values of 0.4752 s/0.6251 s for respiration and 0.1844 s/0.2231 s for cardiac intervals. Respiratory rate variability (RRV) was assessed in the time domain, while heart rate variability (HRV) was analyzed across time, frequency, and nonlinear domains. Compared to healthy participants, OSA patients showed markedly higher variability in both RRV and HRV, indicating disrupted breathing patterns and altered cardiac dynamics. These results demonstrate the feasibility of DSIL Doppler radar for simultaneous, non-contact monitoring of respiratory and cardiac activity, highlighting its potential as a practical tool for home-based or long-term OSA assessment.
KW - Doppler radar
KW - digital self-injection-locking (DSIL) radar
KW - heart rate variability
KW - obstructive sleep apnea
KW - respiratory rate variability
KW - signal processing
UR - https://www.scopus.com/pages/publications/105033156814
U2 - 10.1109/CENIM67940.2025.11325833
DO - 10.1109/CENIM67940.2025.11325833
M3 - Conference contribution
AN - SCOPUS:105033156814
T3 - Proceeding of the International Conference on Computer Engineering, Network and Intelligent Multimedia 2025, CENIM 2025
SP - 384
EP - 388
BT - Proceeding of the International Conference on Computer Engineering, Network and Intelligent Multimedia 2025, CENIM 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th International Conference on Computer Engineering, Network and Intelligent Multimedia, CENIM 2025
Y2 - 25 November 2025 through 26 November 2025
ER -