The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Ground Reflection Effect on OAM Multi-Mode Transmission System Based on Uniform Circular Arrays

UCA 기반 OAM 다중모드 전송시스템에 대한 지면 반사의 영향

  • Yoo, Jeong-Ung (Division of Electronics and Information Engineering, Chonbuk National University) ;
  • Son, Hae-Won (Division of Electronics and Information Engineering, Chonbuk National University)
  • 유정웅 (전북대학교 전자정보공학부) ;
  • 손해원 (전북대학교 전자정보공학부)
  • Received : 2017.11.30
  • Accepted : 2018.01.23
  • Published : 2018.01.31
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Abstract

This paper investigates the ground reflection effect on the channel capacity of an orbital angular momentum (OAM) multi-mode transmission system that uses uniform circular array (UCA) antennas. The ground-reflected signals cause inter-mode interferences between the OAM modes, and lead to system performance degradation. The OAM multi-mode channel capacity severely degrades owing to the ground reflection as the transmission distance increases. Increasing the UCA height above the ground and using highly directive array elements can mitigate the ground reflection effect and increase the channel capacity.

본 논문에서는 균일원형배열(UCA) 안테나를 이용한 궤도각운동량(OAM) 다중모드 전송시스템의 채널용량에 대하여지면 반사가 미치는 영향을 수치적으로 분석하였다. 지면 반사는 OAM 다중모드 간 간섭을 유발하고 시스템의 심각한 성능 저하를 가져온다. 전송거리가 증가함에 따라 OAM 다중모드 채널용량은 지면 반사의 영향으로 인하여 매우 작아진다. 지면 반사의 영향을 줄이기 위해서는 UCA의 높이를 높이고, 배열 소자의 지향성을 높이는 것이 필요하다.

Keywords

References

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