Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Adaptive Modulation for Multi-user MIMO Broadcast Channels with Block Diagonal Geometric Mean Decomposition

다중 사용자 다중 안테나 브로드캐스트 채널에서의 기하평균 블록 대각화 기반의 적응적 변조 기법

  • Choi, Seung-Kyu (Department of Electrical and Electronic Engineering Yonsei university) ;
  • Ham, Jae-Sang (Department of Electrical and Electronic Engineering Yonsei university) ;
  • Noh, Jee-Hwan (Department of Electrical and Electronic Engineering Yonsei university) ;
  • Lee, Chung-Yong (Department of Electrical and Electronic Engineering Yonsei university)
  • 최승규 (연세대학교 전기전자공학과) ;
  • 함재상 (연세대학교 전기전자공학과) ;
  • 노지환 (연세대학교 전기전자공학과) ;
  • 이충용 (연세대학교 전기전자공학과)
  • Published : 2008.06.18
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Abstract

Exploiting block diagonal geometric mean decomposition (BD-GMD) for the multi-user MIMO broadcast channels, each user can achieve identical received SNRs for its subchannels. Thus, equal rate modulation can be applied to each user. Using BD-GMD, we can apply an adaptive modulation to each user with the required bit error rate (BER). In this paper, we propose an adaptive modulation algorithm for the multi-user MIMO broadcast channels with BD-GMD to maximize the system throughput satisfying the required BER performance.

Keywords