A Body Channel Communication Technique Utilizing Decision Feedback Equalization

This article presents the body channel communication technique that first adopts decision feedback equalisation. For the first time, we characterised post-cursor intersymbol interference of a single-bit pulse response of a human body channel for decision feedback equalisation achieving the first bod...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.198468-198481
Main Authors: Lee, Ji-Hoon, Ko, Jaehyun, Kim, Kwangmin, Choi, Minsoo, Sim, Jae-Yoon, Park, Hong-June, Kim, Byungsub
Format: Article
Language:English
Subjects:
Body-channel communication (BCC)
Channel estimation
Clocks
Communication
decision feedback equalization (DFE)
Decision feedback equalizers
Encoding
Equalization
Feedback
human-body communication (HBC)
Interference
Intersymbol interference
intra-body communication (IBC)
Real-time systems
Transceivers
wireless body area network (WBAN)
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Summary:This article presents the body channel communication technique that first adopts decision feedback equalisation. For the first time, we characterised post-cursor intersymbol interference of a single-bit pulse response of a human body channel for decision feedback equalisation achieving the first body channel communication faster than 100 Mb/s. In the proposed technique, an 8-tap decision feedback equaliser is utilised at the receiver to compensate for intersymbol interference of the body channel. The experimental results show that the proposed prototype transceiver achieved the highest data rates of 150 Mb/s and 10 Mb/s along 20-cm and about 100-cm body channels, respectively. Compared to the previous best result measured for the same body-channel distance of about 100 cm, the data rate is improved by ten times, showing that the proposed technique can significantly increase the speed of body channel communication.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3034999