Indoor Experiments of Real-Time MU-MIMO with CSI Feedback Scheme for Wireless LAN Systems

被引：0
|
作者：
Ishihara, Koichi [1 ]
Asai, Yusuke [1 ]
Kudo, Riichi [1 ]
Ichikawa, Takeo [1 ]
Mizoguchi, Masato [1 ]
机构：
[1] NTT Corp, NTT Network Innovat Labs, Yokosuka, Kanagawa, Japan
来源：
2012 IEEE 75TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2012年
关键词：
component; multiuser MIMO; CSI feedback; OFDM; downlink; wireless LAN;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper presents indoor experimental results on an implemented real-time downlink multiuser multiple-input multiple-output (DL-MU-MIMO) transceiver with a channel state information (CSI) feedback scheme for next generation wireless LAN systems. Estimated CSI is used at the access point (AP) transmitter to calculate transmit beamforming weight for DL-MU-MIMO transmission. A CSI compression scheme using discrete cosine transform (DCT) is proposed to reduce CSI feedback overhead. The transceiver performance is demonstrated and indoor experiments clarify that it is a feasible tool for real-time signal processing that improves system throughput over that of transceiver without a CSI compression scheme with simple digital signal processing of single-antenna stations (STAs).
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页数：5
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