Experimental evaluation of digital beamforming for 5G multi-site massive MIMO
Experimental evaluation of digital beamforming for 5G multi-site massive MIMO
复制标题
5G多站点大规模MIMO数字波束成形实验评估
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Y. Maruta
中科院分区：
文献类型：
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作者：
Tatsuki Okuyama;S. Suyama;Jun Mashino;Shohei Yoshioka;Y. Okumura;Kenichiro Yamazaki;Daisuke Nose;Y. Maruta
为了解决快速增长的业务，使用波束成形（BF）的大规模MIMO是用于第五代（5G）移动的通信系统的有前途的技术。作者最近提出了适用于低SHF频带Massive MIMO的数字固定BF和基于信道状态信息（CSI）的预编码（数字FBCP）的联合处理。通过引入扩展预编码技术，数字FBCP不仅在单站点环境中有效，而且在多站点环境中也有效。虽然以前的工作仅在计算机仿真中进行评估，但本文旨在通过使用5G低SHF频段大规模MIMO原型来评估实际性能。首先，我们在室外实验中测量低SHF波段（5.2 GHz波段）的CSI数据，然后，本文优化波束参数的计算机仿真利用测量数据。最后，我们展示了数字FBCP在多站点环境中的吞吐量性能。
In order to tackle rapidly increasing traffic, Massive MIMO using beamforming (BF) is promising technique for fifth-generation (5G) mobile communication systems. Authors have recently proposed the joint processing of digital fixed BF and channel state information (CSI)-based precoding (Digital FBCP) that is suitable for low-SHF-band Massive MIMO. It has been also clarified that Digital FBCP is efficient in not-only single-site but also multi-site environment by introducing extended precoding technique. Although the previous works evaluate only in computer simulations, this paper aims to evaluate real-field performances by using 5G low-SHF-band massive MIMO prototype. First we measure low-SHF-band (5.2 GHz-band) CSI data in outdoor experiment, and then, this paper optimizes beam parameter in computer simulations exploiting the measured data. Finally, we show the throughput performance of Digital FBCP in multi-site environments.