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Effect of Body Movement and Position of Antenna on the Capacity of WBAN Channel

인체 움직임과 안테나 위치가 WBAN 채널 용량에 미치는 영향 분석

  • Ahn, Chun-Soo (Department of Electronic Computer Engineering, Hanyang University) ;
  • Ahn, Byoung-Jik (Department of Electronic Computer Engineering, Hanyang University) ;
  • Kim, Sun-Woo (Department of Electronic Computer Engineering, Hanyang University) ;
  • Choi, Jae-Hoon (Department of Electronic Computer Engineering, Hanyang University)
  • 안춘수 (한양대학교 전자컴퓨터통신공학과) ;
  • 안병직 (한양대학교 전자컴퓨터통신공학과) ;
  • 김선우 (한양대학교 전자컴퓨터통신공학과) ;
  • 최재훈 (한양대학교 전자컴퓨터통신공학과)
  • Received : 2012.01.03
  • Accepted : 2012.01.25
  • Published : 2012.02.29

Abstract

This paper presents channel measurements for wireless body area network(WBAN) and provides performance evaluation from the measurement. We measured the radio propagation in 2.45 GHz ISM band in an anechoic chamber according to various human movements and the position of transmit antennas. Two transmit antennas are mounted on different positions of human body for the purpose of comparing the diversity gain and correlation between the channels in $2{\times}1$ multiple-input single-output(MISO) systems. The experimental results show that the outage capacity is closely related with the correlation coefficient between channels in transmit diversity system.

본 논문에서는 wireless body area network(WBAN)에서의 채널 성능을 측정하고 분석하였다. 실험은 무반향실에서 다양한 인체 움직임과 송신 안테나 위치에 따라서 2.45 GHz ISM 대역 채널을 측정함으로써 이루어졌다. $2{\times}1$ 다중 입력 다중 출력 시스템의 다이버시티 이득과 상관 관계를 비교하기 위하여 두 송신 안테나를 인체의 서로 다른 위치에 부착하였다. 본 논문에서의 실험 결과는 송신 다이버시티 시스템의 outage 채널 용량은 두채널 간의 상관 관계와 깊은 관련이 있음을 보여준다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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