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).

引用

页数：5

共 18 条

[1]

[Anonymous], 2009, IEEE Standard for Local and metropolitan area networks- Part 16: Air Inter- face for Broadband Wireless Access Systems Amendment 3: Advanced Air Interface

[2]

Choi L. U., 2004, IEEE T WIREL COMMUN, V3, P653

[3]

Diallo M., 2009, P IEEE VTC SPRING AP

[4] Capacity limits of MIMO channels [J].

Goldsmith, A ;

Jafar, SA ;

Jindal, N ;

Vishwanath, S .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2003, 21 (05) :684-702

[5]

Ishihara K., 2010, P AS PAC RAD SCI C S

[6] MIMO broadcast channels with finite-rate feedback [J].

Jindal, Nihar .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2006, 52 (11) :5045-5060

[7] Linear transmit processing in MIMO communications systems [J].

Joham, M ;

Utschick, W ;

Nossek, JA .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2005, 53 (08) :2700-2712

[8]

Kobayashi H., 2004, IEEE PIMRC, V3, P1797

[9]

Kudo R., 2007, P IEEE GLOBECOM

[10] What is the value of limited feedback for MIMO channels? [J].

Love, DJ ;

Heath, RW ;

Santipach, W ;

Honig, ML .

IEEE COMMUNICATIONS MAGAZINE, 2004, 42 (10) :54-59

← 1 2 →