MHz-band human centric communication technology using near-field coupling mechanism

We propose a novel technology for human centric wireless communication that is aimed at achieving a “touch and connect” intuitive form of communication based on a near-field coupling mechanism using a carrier frequency of 6.75 MHz. Our proposed system is not only composed of transceivers worn on the body (wearable TRX) but also transceivers embedded in floors, PCs, and equipment (embedded TRX). However, there is one problem in that the quality of communication deteriorates since the embedded TRX is strongly susceptible to environmental noise. We demonstrated packet error rate (PER) characteristics as a function of the signal to noise ratio (SNR) in environments similar to those used by human-area networks by taking into consideration the intrusion route of ambient noise to the communication path. The PER characteristics of the wearable TRXs on the phantom are also reported.