An HBC-based continuous bio-potential system monitoring using 30MHz OOK modulation

Abstract

In this paper we describe a body grounded biomedical signal sensing system that uses the human body as a wireless transmission media. The body channel measurements in terms of path loss and frequency response lead the system to use an On-Off Keying type of modulation to ensure a successful signal transmission throughout the entire human body using a 30MHz carrier frequency for the OOK signal. The bio-potential signal sensing presented no disturbances while transmitting the signal and the results of the analog front receiver's output validates the use of this type of modulation for a transfer rate of 1.875Mbps, suitable for future time division based multiple access body sensor network and any body sensor locations.