Channel Modeling and Signaling of Medical Implanted Communication Systems and a Step to Medical ICT

Recently, the use of wireless communications devices in the field of medical implants has received great deal of concern due to miniaturization of electronic circuits. By means of transmitting vital data such as blood pressure, blood glucose level and pulse, we can observe the body condition and detect any possible problems in the human body at anytime and anywhere. These devices can help doctors to diagnose and cure diseases. For wireless communications, in the case of inside or between inside and outside of the human body, channel propagation considerably differs more than in freespace. So, it is necessary to construct a new channel model of the human body. In this paper, we analyze wideband channel characteristics in the body based on the measurements and the theory of electromagnetic wave propagation. Based on the measured data, we propose a new frequency domain channel model in the body by using Zero-Pole parameters. We show that the generated channel and the measured channel have similar statical properties by analyzing autocorrelation function of frequency response, power delay profile and cumulative distribution function of power.