Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Monte-Carlo Based Interference Analysis of 900MHz Passive RFID systems

몬테카를로(Monte-Carlo) 방법을 적용한 수동형 900MHz 대역의 RFID 간섭 분석

  • Kim Young-Hwan (Department of Radio Science & Engineering Kwangwoon University) ;
  • Eo Pill-Seon (Department of Radio Science & Engineering Kwangwoon University) ;
  • Yang Hoon-Gee (Department of Radio Science & Engineering Kwangwoon University) ;
  • Park Seung-Keun (Electronics and Telecommunications Research Institute) ;
  • Kang Bongsoon (Department of Electronic Engineering Dong-A University) ;
  • Kim Young-Soo (Department of Radio Engineering Kyung Hee University) ;
  • Yook Jong-Gwan (School of Electrical and Engineering Yonsei University)
  • 김영환 (광운대학교 대학원 전파공학과) ;
  • 어필선 (광운대학교 대학원 전파공학과) ;
  • 양훈기 (광운대학교 전파공학과) ;
  • 박승근 (한국전자통신연구원) ;
  • 강봉순 (동아대학교 전기전자컴퓨터 공학부) ;
  • 김영수 (경희대학교 전자정보대학 전파통신공학과) ;
  • 육종관 (연세대학교 전기전자공학부)
  • Published : 2006.01.01
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Abstract

This paper presents a Monte-Carlo based method to obtain a probability of interference in the 900MHz passive RFID systems. We show an efficient algorithm to calculate not only in-band interference due to unwanted emission of interfering sources for a given emission mask, but out-of-band interference, which depends on the blocking performances of a victim receiver filter. We next apply the proposed method to two types of RFID systems, one is to use simple FHSS and the other to adopt a hybrid use of FHSS and LBT, which senses the channel before transmission. Simulation is first performed with a SEAMCAT. We next make simulation with a MATLAB software which implements SEAMCAT algorithm and show both results from two softwares are similar.

본 논문에서는 몬테카를로(Monte-Carlo) 방법을 이용해서 900MHz 수동형 RFID 시스템간의 간섭확률(Probability of Interference)을 획득하는 방법을 제시한다. 간섭원으로 동작하는 RFID 리더 방사 마스크 (emission mask)가 주워졌을 때 방사 마스크로부터 수신기 필터로 수신되는 in-band 간섭전력을 적은 계산 량으로 계산하는 방법을 제시하며 또한 수신 필터의 특성이 주워졌을 때 블로킹에 의한 out-of-band 간섭전력을 계산하는 방법도 제시한다. 제시된 방법에 근거해서 900MHz 대역에서 FHSS 시스템을 사용하는 RFID시스템의 경우와 채널을 센싱 후 송신을 시작하는 LBT 기능이 있는 FHSS 시스템 두 경우에 대해서 간섭확률을 계산한다. ERO에서 개발한 SEAMCAT 소프트웨어로 시뮬레이션하고 SEAMCAT 알고리즘을 MATLAB 툴로 구현 후 MATLAB으로 시뮬레이션 하여 결과가 거의 유사함을 보인다.

Keywords

References

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