Shortresp: Exploiting Short-Range Communication System for Human Breath Status Monitoring

In this paper, we propose a human respiration rate detection system, Shortresp, which is innovatively predicated on short-range distance communication(SRC) system. Shortresp amasses channel state information (CSI) phase via Sparklink Low Energy (SLE) access technology, which subsequently undergoes processing utilizing the round-trip time (RTT) mode with channel fusion. To decompose the CSI phase signal and extract the respiration component, Shortresp employs the empirical wavelet transform (EWT). Distinguished by a more compact antenna array, lower power utilization, and heightened accuracy in detection, Shortresp achieves superior phase precision on account of the utilizing of SLE system, making it a more effective solution compared to other extant wireless breath rate detection systems.