ADAPTATION BETWEEN CODEBOOK BASED SUMIMO AND MU-MIMO WITH SINGLE MCS FEEDBACK IN LTE
This paper utilizes an adaptive modulation and coding (AMC) scheme and compares the performance of adaptation between single-user multiple input multiple output (SU-MIMO) and multi-user (MU) MIMO with that of SU-MIMO. In long term evolution (LTE), every UE only needs to feed back SU-MIMO rank 1 channel quality indicator (CQI) which could get feedback overhead and computational complexity reduction. This CQI message contains a specific MCS index predicted by the UE. In this AMC scheme, MUMIMO modulation and coding scheme (MCS) of a user equipment (UE) can be obtained from its SUMIMO rank 1 (single stream transmission) MCS. According to the SU-MIMO rank 1 MCS and MUMIMO MCS obtained, we can achieve adaptation between SU-MIMO and MU-MIMO by two-user orthogonal pairing and proportional fair (PF) scheduling. Simulation results show that the adaptation can achieve significant improvement on spectrum efficiency (SE) compared with SUMIMO by means of the AMC scheme proposed in this paper.
LTE Adaptation MU-MIMO precoding MCS PF
Shaofeng Du Yafeng Wang Yong Zhang Dacheng Yang
Wireless Theories and Technologies Laboratory, Beijing University of Posts and Telecommunications,Be China Mobile Research Institute, Beijing, China Wireless Theories and Technologies Laboratory, Beijing University of Posts and Telecommunications, B
国际会议
北京
英文
588-592
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）