Wearable Visual-MIMO for Healthcare Applications

For daily health checkup, wearable device plays an important role in healthcare applications. In this manuscript, we develop a visual multiple-input multiple-output (visual-MIMO) system for healthcare application. As a demo of healthcare device, we design a pulse oximeter device that can measure heart rate (HR) and blood oxygenation (BO) of a person. The HR and BO data are used to send through light-emitting diode (LED) to camera communication. We have used generalized color modulation (GCM) technique to modulate the HR and BO data into the LED array for transmission and smartphone camera is used as the receiver to demodulate the transmitted data. We demonstrate our proposed visual-MIMO system by developing an android app on smartphone.