The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Performance Analysis of LTE-R Radio Communication Systems in High Speed Train Environment

열차 고속 주행환경에서 LTE-R 무선통신시스템 성능 분석

  • Received : 2022.06.30
  • Accepted : 2022.08.17
  • Published : 2022.08.31
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Abstract

This paper analyzed radio link throughput performance by applying radio link simulation and test equipment because there is limit in train filed test in 420 km/h high speed environment. According to the radio performance analysis, the throughput performance is slightly degraded in QPSK and 16QAM modulation schemes. But throughput performance is highly degraded in 64QAM modulation scheme.

본 논문에서는 420km/h 고속으로 이동하는 열차 환경에서 LTE-R 무선링크 성능을 분석함에 있어 현차 시험에 제약이 있으므로 무선링크 시뮬레이션과 계측기를 이용하여 고속 이동에 따른 무선링크 Throughput 성능을 분석하였다. 성능 분석 결과 QPSK와 16QAM 변조 방식은 고속 이동으로 인한 성능 열화가 미미하지만 64QAM 변조 방식은 성능 열화가 크고 이로 인하여 Throughput 감소가 크게 발생함을 알 수 있었다.

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References

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