대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

차등 선부호화 기법을 적용한 MU-MIMO 시스템의 성능분석

Performance Analysis of MU-MIMO employing differential Precoding

  • 곡청 (충북대학교 정보통신공학과) ;
  • 박노윤 (충북대학교 정보통신공학과) ;
  • 이신 (충북대학교 정보통신공학과) ;
  • 김영주 (충북대학교 정보통신공학과)
  • Gu, Qing (School of Information and Communication Engineering, Chungbuk National University) ;
  • Park, Noe-Yoon (School of Information and Communication Engineering, Chungbuk National University) ;
  • Li, Xun (School of Information and Communication Engineering, Chungbuk National University) ;
  • Kim, Young-Ju (School of Information and Communication Engineering, Chungbuk National University)
  • 투고 : 2011.09.05
  • 심사 : 2011.10.17
  • 발행 : 2011.10.25
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초록

본 논문에서는 제한된 피드백 정보를 사용하는 MU-MIMO 하향링크 시스템에 준-대각선 및 구관 행렬, 그리고 동 이득 전송 기법을 이용한 차등 선부호화 기법을 적용하여 sum-rate 및 bit error rate 성능을 분석한다. 시뮬레이션과 성능분석을 통해 기존의 LTE 코드북보다 sum-rate 성능은 최소 0.6bps/Hz, BER 성능은 최소 4dB 개선됨을 보인다.

In this paper, the sum-rate and BER performances of MU-MIMO system employing quantized differential feedback technique are analyzed over temporrally correlated channels. Several differential codebooks are assumed in the analysis such as quasi-diagonal codebook, spherical cap codebook, and differential equal gain codebook. The simulation results indicates that the system employing quantized differential feedback technique provides significant performance improvement. The performance improved 0.6bps/Hz at least in terms of sum-rate, and 4dB power gain is provided in terms of average BER.

키워드

참고문헌

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