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학술지 Transceiver for Human Body Communication Using Frequency Selective Digital Transmission
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저자
형창희, 강성원, 박성욱, 김윤태
발행일
201204
출처
ETRI Journal, v.34 no.2, pp.216-225
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.12.0111.0178
협약과제
10MF2200, 인체활동 기반 그린 에너지 하베스팅 및 고효율 전력전송 시스템 개발, 정명애
초록
This paper presents a transceiver module for human body communications whereby a spread signal with a group of 64 Walsh codes is directly transferred through a human body at a chip rate of 32 Mcps. Frequency selective digital transmission moves the signal spectrum over 5 MHz without continuous frequency modulation and increases the immunity to induced interference by the processing gain. A simple receiver structure with no additional analog circuitry for the transmitter has been developed and has a sensitivity of 250 μV pp. The high sensitivity of the receiver makes it possible to communicate between mobile devices using a human body as the transmission medium. It enables half-duplex communication of 2 Mbps within an operating range of up to 170 cm between the ultra-mobile PCs held between fingertips of each hand with a packet error rate of lower than 10 -6. The transceiver module consumes 59 mA with a 3.3 V power supply. © 2012 ETRI.
키워드
Analog front end, Frequency selective digital transmission, Human body communication (HBC), Touchand-play (TAP), Walsh code
KSP 제안 키워드
3 V, Analog Front-end, Frequency modulation, Half-Duplex(HD), Half-duplex communication, High Sensitivity, Human Body Communication(HBC), Mobile devices, Operating range, Packet error rate, Processing gain