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

页码：3062 / 3066

页数：5

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