Characterization of In-Body Radio Channels for Wireless Implants

Body-centric wireless communication, which is accepted as an important part of the fourth generation mobile communications systems, provides a prospective communication solution for implantable devices in personal health care. In this paper, an inhomogeneous human body model was proposed to study th...

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Bibliographic Details
Published in:IEEE sensors journal 2017-03, Vol.17 (5), p.1528-1537
Main Authors: Li, Jingzhen, Nie, Zedong, Liu, Yuhang, Wang, Lei, Hao, Yang
Format: Article
Language:English
Subjects:
Abdomen
Biological system modeling
Biological tissues
Electric fields
finite-difference time-domain (FDTD)
human body communication (HBC) frequency band
Implants
In-body radio channels (I-BRCs)
inhomogeneous model
Permittivity
propagation characterization
simulation and measurement
Wireless communication
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Summary:Body-centric wireless communication, which is accepted as an important part of the fourth generation mobile communications systems, provides a prospective communication solution for implantable devices in personal health care. In this paper, an inhomogeneous human body model was proposed to study the in-body radio channels for wireless implants, and numerical simulations were carried out with the finite-difference time-domain method. Specifically, parameters, such as channel gain and group delay, were studied for different links according to implant locations, namely, from intra-brain to the surface of chest, abdomen, upper arm, and thigh, respectively, over different frequencies (from 5 to 100 MHz). The influences of electrode size and type were also studied at 45 MHz. The results showed that all channels had the maximum gain of more than -12 dB at 5 MHz. Group delay was almost independent of channels. The model was verified by experimental measurements. The results showed that the simulations were in good agreement with the measurements.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2016.2635700