The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Outage Probability Analysis of Full Duplex Relay with Decode and Forward Protocol

복호 후 전달 방식을 사용하는 전이중 통신 릴레이 시스템에서의 오수신 확률 성능 분석

  • 권태훈 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 임성묵 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 박성수 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 홍대식 (연세대학교 전기전자공학과 정보통신 연구실)
  • Received : 2010.01.25
  • Accepted : 2010.05.10
  • Published : 2010.06.30
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Abstract

In this paper, we analyze the outage probability of full duplex relay (FDR) with decode-and-forward (DF) protocol is derived under fading channels. The fading channel for source-relay link is assumed to be Rician fading to consider the infrastructured fixed relay with line of sight (LOS) propagation, and the other fading channels are assumed to be Rayleigh fading. Based on this analytical result, we provide the criterion that FDR shows a lower outage probability than HDR to consider the interference problem and the resource efficiency improvement by full duplex (FD) operation. The accuracy of the analysis is confirmed throughout the simulation results.

본 논문은 복호 후 전달 (decode-and-forward, DF) 프로토콜 하에서 전이중 통신방식 릴레이 (full duplex relay, FDR) 의 오수신 확률 (outage probability) 성능을 페이딩 채널하에서 유도하였다. 준기지국 형태의 고정된 릴레이를 가정하여 송신단과 릴레이 사이의 채널은 LOS (line of sight) 전파가 존재하는 Rician 채널을, 다른 링크 채널은 Rayleigh 채널을 고려하였다. 또한, 이 분석을 통해 전이중 통신 (full duplex, FD)으로 인한 간섭 문제와 자원의 효율성 향상 측면을 고려하여 실제적으로 FDR이 반이중 통신방식 릴레이 (half duplex relay, HDR) 보다 낮은 오수신 확률 성능을 가지기 위한 조건을 제시하였다. 분석된 오수신 확률 성능의 정확성은 모의 실험을 통하여 검증되었다.

Keywords

Acknowledgement

Supported by : 한국과학재단

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