Chang Hee Hyoung

A novel system for intrabody communication: touch-and-play

This paper presents a novel intrabody communication system, in which the base-band signal is directly transmitted through human body and electrically recovered, and its architecture are. The electrical characteristics of the human body in terms of a communicational channel are investigated from 1KHz to 10MHz using the equipment with a floating ground. The signal from universal asynchronous receiver transceiver (UART) port of microcontroller with 3V peak is used as the output of transmitter. The receiver board occupied 2.2 times 2.2cm2 areas and consumes 30mW power with 3V supply voltage. The packet error rate (PER) of 10-8 is obtained with a packet size of 77bits. The proposed system named Touch-And-Play (TAP) is implemented and validated by transferring the JPEG file with Manchester coded digital signal up to 1Mbps from one hand with a microcontroller to the opposite one with the functional equivalence of the printer through human body by touching them