布里斯托尔大学大规模MIMO研究概述
An Overview of Massive MIMO Research at the University of Bristol
摘要：
大规模MIMO作为5G无线系统所需容量提升的关键技术，已迅速普及。自六年前提出理论概念以来，研究活动呈指数级增长，现在工业界对该技术商业化的兴趣正在发展。为了有效地做到这一点，我们认为，至关重要的是，进一步的务实研究进行，以确定现实如何不同于理论理想。本文概述了布里斯托尔大学通信系统与网络组内发生的大规模MIMO研究活动，该研究活动以我们的128天线实时测试平台为中心，该测试平台是通过与NI和隆德大学合作的BIO可编程城市计划开发的。通过最近的初步试验，我们实现了79.4 bits/s/Hz的世界第一频谱效率，随后证明这可以增加到145.6 bits/s/Hz。我们在这里提供了这项工作的总结以及我们正在进行的一些研究方向，如大规模阵列波前分析，优化功率控制和本地化技术。
英文摘要：
Massive MIMO has rapidly gained popularity as a technology crucial to the capacity advances required for 5G wireless systems. Since its theoretical conception six years ago, research activity has grown exponentially, and there is now a developing industrial interest to commercialise the technology. For this to happen effectively, we believe it is crucial that further pragmatic research is conducted with a view to establish how reality differs from theoretical ideals. This paper presents an overview of the massive MIMO research activities occurring within the Communication Systems & Networks Group at the University of Bristol centred around our 128-antenna real-time testbed, which has been developed through the BIO programmable city initiative in collaboration with NI and Lund University. Through recent preliminary trials, we achieved a world first spectral efficiency of 79.4 bits/s/Hz, and subsequently demonstrated that this could be increased to 145.6 bits/s/Hz. We provide a summary of this work here along with some of our ongoing research directions such as large-scale array wave-front analysis, optimised power control and localisation techniques.
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