Millimeter-Wave Massive MIMO Testbed with Hybrid Beamforming

被引：2
|
作者：
Chung, MinKeun [1 ]
Liu, Liang [1 ]
Johansson, Andreas [1 ]
Nilsson, Martin [1 ]
Zander, Olof [2 ]
Ying, Zhinong [2 ]
Tufvesson, Fredrik [1 ]
Edfors, Ove [1 ]
机构：
[1] Lund Univ, Dept Elect & Informat Technol, Lund, Sweden
[2] Sony Res Ctr Lund, Lund, Sweden
来源：
2020 54TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS | 2020年
关键词：
Beam-selection; beamforming; massive multiple-input multiple-out (MIMO); millimeter-wave (mmWave); testbed;
D O I：
10.1109/IEEECONF51394.2020.9443518
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Massive multiple-input multiple-out (MIMO) technology is vital in millimeter-wave (mmWave) bands to obtain large array gains. However, there are practical challenges, such as high hardware cost and power consumption in such systems. A promising solution to these problems is to adopt a hybrid beamforming architecture. This architecture has a much lower number of transceiver (TRx) chains than the total antenna number, resulting in cost- and energy-efficient systems. In this paper, we present a real-time mmWave (28GHz) massive MIMO testbed with hybrid beamforming. This testbed has a 64-antenna/16-TRx unit for beam-selection, which can be expanded to larger array sizes in a modular way. For testing everything from baseband processing algorithms to scheduling and beam-selection in real propagation environments, we extend the capability of an existing 100-antenna/100-TRx massive MIMO testbed (below 6GHz), built upon software-defined radio technology, to a flexible mmWave massive MIMO system.
引用
收藏
页码：309 / 313
页数：5
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