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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A Cooperative Transmission Scheme Based on Alamouti Coding for Cognitive Radio Networks Over Frequency Selective Fading Channels

주파수 선택적 페이딩 채널에서 안치 무선 통신을 위한 Alamouti 코딩 기반 협력 전송 기법

  • 강승구 (성균관대학교 정보통신공학부) ;
  • 김준환 (성균관대학교 정보통신공학부) ;
  • 백지현 (건국대학교 정보통신공학부) ;
  • 윤석호 (성균관대학교 정보통신공학부)
  • Received : 2011.04.12
  • Accepted : 2011.06.03
  • Published : 2011.06.30
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Abstract

This paper addresses a cooperative transmission scheme based on Alamouti coding for cognitive radio networks over frequency selective fading channels. In the proposed scheme, the Alamouti coded form at the destination node is constructed through a simple combination of symbols at the source node, instead of the time-reversal operation and the conjugate operation at the relay nodes used in the conventional scheme. Numerical results show that the proposed scheme achieves a higher order cooperative diversity than that of the conventional scheme.

본 논문에서는 주파수 선택적 페이딩 채널에서 (frequency selective fading channels) 인지 무선 통신을 위한 Alamouti 코딩 기반 협력 전송 기법을 제안한다. 제안한 기법은 시간 반전 연산과 (time-reversal operation) 공액 복소 연산을 (conjugate operation) 사용하는 기존 기법과 다르게 소스 노드에서의 간단한 심볼 조합을 통해 목적지 노드에서 Alamouti 부호 구조를 획득한다. 모의실험 결과를 통하여 제안한 기법의 다이버시티 이득 차수가 기존 기법의 다이버시티 이득 차수보다 높은 것을 확인한다.

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References

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