A novel indoor healthcare with time hopping-based visible light communication

摘要

This paper presents the time hopping (TH) visible light communication (VLC) system for an electromagnetic wave free indoor healthcare. VLC technology has emerged as an alternative wireless communication due to various advantages such as ubiquity, low energy consumption, no radio frequency (RF) radiation, and security against undesired network access. Significant bio-medical signal including the electrocardiography (ECG) can be transferred with VLC even in places where RF is forbidden. This potential advantage of VLC could save more emergency patients. The time hopping scheme is adopted to transmit multiple medical data with keeping a simple system design. Multiple data streams go through an optical detector including a photodiode and multiple data are separated by TH demodulator at the receiver. Each separated signal is then monitored to serve the necessary medical care for the concerned patient.