Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Spectral Efficient SF Block Coded Relay Transmission System without Cyclic Prefix for a Shadow Area

음영 지역을 위한 주기적 프리픽스 없는 주파수 효율적인 주파수 공간 블록 부호화 중계기 전송 시스템

  • Won, Hui-Chul (Division of Computer & Information Technology, Daegu University)
  • 원희철 (대구대학교 컴퓨터.IT공학부)
  • Received : 2015.07.29
  • Accepted : 2015.11.06
  • Published : 2015.11.30
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Abstract

This paper proposes a spectral efficient space-frequency(SF) block coded single carrier-frequency division multiple access(SC-FDMA) transmission system in a relaying multi-path shadow area. The cyclic prefix(CP) is not used in the proposed system in order to prevent a loss of spectral efficiency due to the use of CP. The destruction of channel cyclicity due to the lack of CP is recovered at the receivers of relays and a destination station. Simulation results show that the performance of the proposed system without CP is almost same as that of the conventional system with full CP, thus increasing the spectral efficiency.

본 논문에서는 중계기를 통해 다중 경로가 확보된 음영 지역에서 주파수 공간 블록 부호를 적용한 주파수 효율적인 SC-FDMA(Single Carrier-Frequency Division Multiple Access) 전송 시스템을 제안한다. 본 논문에서 제안된 시스템은 주기적 프리픽스 사용에 따른 주파수 효율 감소를 방지하기 위하여 주기적 프리픽스를 사용하지 않는다. 주기적 프리픽스를 사용하지 않음에 따라 훼손되는 채널 주기성을 중계기와 수신국의 수신기에서 복원함으로써, 주기적 프리픽스를 사용하지 않는 제안된 시스템의 성능이 충분한 주기적 프리픽스를 사용하는 기존 시스템의 성능과 거의 동일하여 시스템의 주파수 효율이 향상되는 것을 실험을 통해 확인할 수 있다.

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