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

  • 제40권4호
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  • Pages.628-636
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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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거대 다중 안테나 시스템을 위한 넌컨벡스 압축센싱 기반채널 정보 피드백 기법

Channel State Information Feedback Scheme Based on Non-Convex Compressed Sensing for Massive MIMO Systems

  • Kim, Jung-Hyun (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Inseon (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Park, Jin Soo (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Song, Hong-Yeop (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Han, Sung Woo (Agency for Defense Development)
  • 투고 : 2015.02.13
  • 심사 : 2015.04.08
  • 발행 : 2015.04.30
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초록

본 논문은 거대 다중 안테나 시스템을 위한 넌컨백스 압축센싱 기반 채널 상태 정보 피드백 기법을 제안한다. 제안하는 피드백 기법은 랜덤 백터 양자화 방식과 결합하여, 피드백 양을 줄이면서 송신단에서 정확한 채널 정보를 획득할 수 있게 해준다. 또한, 측정값이 부정확하고 불완전하더라도 기존의 컨백스 압축센싱 기반 채널 상태정보 피드백 기법보다 더 적은 수의 측정값만으로 채널 상태 정보를 복구할 수 있다. 실험을 통해 제안하는 넌컨백스 압축센싱 기반 피드백 기법이 기존의 압축센싱 기반 피드백 기법과 랜덤 백터 양자화 피드백 기법에 비해 같은 피드백 양으로 더 높은 전송률을 제공함을 확인하였다.

In this paper, we propose a non-convex compressed sensing(NCCS)-based channel state information(CSI) feedback scheme for massive multiple-input multiple-output(MIMO) systems. Combining the random vector quantization(RVQ), the proposed scheme permits a transmitter to obtain CSI with acceptable accuracy under substantially reduced feedback load. Furthermore, it recovers CSI from fewer measurements than that of existing convex compressed sensing(CCS)-based schemes even if the measurements are inaccurate and incomplete. Simulation results show that the proposed scheme achieves higher throughput than both existing CCS-based feedback scheme and random vector quantization(RVQ) feedback scheme with the same feedback load.

키워드

참고문헌

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피인용 문헌

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  2. 주파수 분할 방식의 거대 다중 안테나 시스템을 위한 빔형성 기반의 채널상태정보 기준신호 전송기술 vol.41, pp.5, 2015, https://doi.org/10.7840/kics.2016.41.5.520