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

  • 제40권8호
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  • Pages.1560-1566
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  • 2015
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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정보와 전력의 동시 전송을 최대화하기 위한 자원 관리 기법

Resource Management for Maximizing Simultaneous Transfer of Information and Power

  • Lee, Kisong (Department of Information and Telecommunication Engineering, Kunsan National University) ;
  • Kim, Minhoe (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Cho, Dong-Ho (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
  • 투고 : 2015.05.07
  • 심사 : 2014.07.30
  • 발행 : 2015.08.31
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초록

차세대 무선 통신 시스템에서는 효율적인 전력 사용을 위해서 서비스를 받지 않는 수신기는 송신기로부터 전송되는 신호를 이용하여 전력을 획득할 수 있는 환경을 고려하고 있다. 본 논문에서는 최적화 기법을 이용하여 시스템의 총 데이터 전송률과 전력 획득량을 동시에 최대화할 수 있는 서브 채널 및 파워 할당 기법을 제안한다. 시뮬레이션을 통하여 제안 기법은 시스템의 총 데이터 전송률과 전력 획득량을 균형있게 증가시킴을 보였다. 특히, 제안 기법은 기존 기법에 비해 미미한 데이터 전송률 저하를 보이지만 전력 획득량은 크게 증가시켜 효율적인 전력 사용을 가능하게 함을 보였다.

To enable the efficient use of energy, the environment where unscheduled receivers can harvest energy from the transmitted signal is considered in next-generation wireless communication systems. In this paper, we propose a scheme for allocating subchannel and power to maximize the system throughput and harvested energy simultaneously using optimization techniques. Through simulations, we verify that the proposed scheme can increase the system throughput and harvested energy harmoniously. In particular, the proposed scheme improves the harvested energy remarkably with a negligible degradation of system throughput, compared with conventional scheme, as a result, energy can be used efficiently in the system.

키워드

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