Method, apparatus, and system for enhanced wireless monitoring of vital signs

This invention describes a system that monitors a person's vital signs, like breathing or heart rate, without physical contact. It operates by transmitting a wireless signal into a room and then receiving it, noting how the signal changes due to subtle movements from a person's vital signs. A processor then analyzes these signal changes using a specific method: it computes a time series of "CI-features" (which combine basic signal characteristics with denoised versions), then uses sliding time windows and one-dimensional characteristic functions to create a two-dimensional decomposition for monitoring.