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학술지 Measurement and Analysis of Electric Signal Transmission Using Human Body as Medium for WBAN Applications
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저자
강태욱, 오광일, 황정환, 김성은, 박형일, 이재진
발행일
201803
출처
IEEE Transactions on Instrumentation and Measurement, v.67 no.3, pp.527-537
ISSN
0018-9456
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TIM.2017.2783059
협약과제
17MF1100, 밀리미터파 5G 이동통신 시스템 개발, 김태중
초록
Human body communications (HBCs) realize wireless body area networks (WBANs) using the human body as a transmission channel without wired or wireless connections. While presenting various approaches for measurement and analysis of the human body channel, previous studies require additional interpretations of their results to obtain practical design parameters for a desired communication system. This paper addresses the provision of specific design guidelines based on the proposed channel measurement for capacitive coupling HBC employing digital transmission, adopted in the IEEE standards 802.15.6. for WBAN. In the experiments, customized channel-sounding signals were applied to the human body using a battery-powered device with a ground-electrode size of 27 × 50 mm2. The signals received after passage through the body were measured considering 30 kinds of measurement conditions determined by the body postures and locations of the transmitter and receiver. The operating frequencies of the transmission signals were varied up to 100 MHz. This work derives the minimum required lengths of symbol-codes based on analyses of channel-measured data in terms of measurement conditions, operating frequencies, and bandwidths of a receive-filter, to achieve a maximum data rate. This was done to ensure handling of intrinsic signal errors such as those by inter-symbol-interference, and to provide more reliable bit-error-rate performance in the human body channel, depending on the transmitter structures.
키워드
Capacitive coupling, channel measurement, channel modeling, digital transmission, human body channel, human body communications, wearable device, wireless body area networks
KSP 제안 키워드
100 MHz, Bit-error-rate(BER), Body Area Networks(BANs), Body postures, Capacitive Coupling, Channel measurement, Channel modeling, Communication system, Electric signal, Human Body Communication(HBC), IEEE standards