한국정보통신학회논문지 (Journal of the Korea Institute of Information and Communication Engineering)

  • 제21권3호
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  • Pages.509-515
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  • 2017
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  • 2234-4772(pISSN)
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  • 2288-4165(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
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다수의 릴레이가 존재하는 협력 통신 환경에서 신뢰도 정보 기반의 릴레이 선택 기법

Trust Degree Information based Relay Selection in Cooperative Communication with Multiple Relays

  • Ryu, Jong Yeol (Department of Information and Communications Engineering, Gyeongsang National University) ;
  • Kim, Seong Hwan (Department of Information and Communications Engineering, Gyeongsang National University)
  • 투고 : 2016.12.06
  • 심사 : 2016.12.15
  • 발행 : 2017.03.31
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 다수의 릴레이가 존재하는 협력 통신 환경에서 릴레이 노드들의 신뢰도 정보를 이용한 릴레이 선택 기법을 고려한다. 먼저, 신뢰도에 따라 릴레이 노드들이 송신단의 정보 전송을 도와주는 경우와 전송을 도와주지 않는 경우 모두를 고려한 정보 전송률의 기댓값을 유도한다. 다음으로 주어진 신뢰도 정보를 이용하여 수신단에서 달성 가능한 정보 전송률의 기댓값을 최대화하는 릴레이 선택 기법을 제안한다. 마지막으로 시뮬레이션을 통하여 제안하는 릴레이 선택 기법이 릴레이 노드의 신뢰도 정보를 이용하지 않는 기존의 릴레이 선택 기법과 비교하여 더 우수한 성능을 나타냄을 보인다.

In this paper, for a cooperative communication system with multiple relays, we consider a relay selection method by exploiting the trust degree information of relay nodes. In the cooperative communication system, we interpret the trust degree of relays as the probability that relay helps the communication between the transmitter and receiver. We first provide an expected achievable rate at the receiver by taking into account the both cases that the relay helps the transmission of transmitter and the relay does not help the transmission of transmitter according to its trust degree. For given trust degree information, we propose an efficient relay selection method to maximize the expected achievable rate at the receiver. For the various configurations, the simulation results confirm that the proposed relay selection method outperforms the conventional relay selection method, which does not consider the trust degree of relay nodes.

키워드

참고문헌

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