Opportunistic Feedback of Channel Information in Multi-user MIMO Environments

被引：0
|
作者：
Park, Jeong-Soo [1 ]
Byun, Yong-Suk [1 ]
Yoon, Moon-Hyung [1 ]
Lee, Yong-Hwan [1 ]
机构：
[1] Seoul Natl Univ, Sch Elect Engn, Kwanak POB 34, Seoul 151600, South Korea
来源：
2013 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) | 2013年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we consider opportunistic feedback of channel state information (CSI) for multi-user multi-antenna transmission. The base station utilizes channel quality information (CQI) as the CSI for closed-loop multi-antenna transmission, which is often achieved from mobile stations in a quantized format. However, only the use of quantized CQI may noticeably deteriorate the transmission performance. We first analyze the effect of CSI quantization error on the multi-user beamforming performance. Then, we propose a novel scheme for opportunistic CSI feedback and user scheduling in multi-user multi-antenna transmission environments. Simulation results show that the proposed scheme can improve the spectral efficiency using a small amount of CSI feedback signaling overhead.
引用
收藏
页码：3062 / 3066
页数：5
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