Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2008.06a
- /
- Pages.175-176
- /
- 2008
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)
- Published : 2008.06.18
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