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

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Performance of Relay Networks with Partially Differential Modulation Scheme Depending on Energy Allocation in Railway Environments

철도환경에서 에너지 할당에 따른 부분차등변조 방식을 이용한 중계 네트워크의 성능

  • 조웅 (중원대학교 컴퓨터시스템공학과) ;
  • 조한벽 (한국전자통신연구원, 스마트모빌리티연구부)
  • Received : 2015.11.30
  • Accepted : 2016.01.24
  • Published : 2016.01.30
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Abstract

In relay networks, relay nodes amplify or demodulate/remodulate the received signal from the transmitter, and transmit that signal to the receiver. The received signals from several relays are combined and used for demodulation at the receiver, which enhances the performance of the overall system. Partially differential modulation scheme which uses coherent modulation at the relay and non-coherent modulation scheme at the receiver is adopted for modulation scheme. We analyze the performance of systems depending on various energy allocations of source and relays given the total energy in relay networks.

중계 네트워크에서는 중계기를 이용하여 송신기로 수신된 신호를 증폭 혹은 복조 후 재변조하여 수신기로 전송하는 역할을 수행한다. 수신기에서는 여러 중계기로부터 수신된 신호를 결합하여 신호를 복조함으로써 통신 성능을 향상 시킬 수 있다. 본 논문에서는 철도환경에서 에너지 할당에 따른 중계 네트워크의 성능을 분석한다. 변조방식은 중계기에서는 동기방식을 사용하고 수신기에서는 비동기 방식을 사용하는 부분차등변조 방식을 적용한다. 중계 네트워크에서 주어진 전체 에너지에 대해 수신기와 중계기의 다양한 에너지 할당에 따른 성능을 분석한다.

Keywords

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