论文标题
具有用户间角相关性的大型MIMO通道：开放访问数据集，基于分析和测量的验证
Massive MIMO Channels with Inter-User Angle Correlation: Open-Access Dataset, Analysis and Measurement-Based Validation
论文作者
论文摘要
在实际的传播环境中，不同的大型MIMO使用者可以在空间路径中具有相关角度。在本文中，我们通过测量和分析的组合研究角度相关性对用户间通道相关性的影响。我们显示三个关键结果。首先，我们收集了一个庞大的MIMO通道数据集，用于检查现实世界传播环境中的用户间通道相关性。数据集现在是开放访问。我们观察到所有关闭用户的频道相关性高于$ 0.48 $。此外，即使相距数十个波长，超过30美元的遥远用户的用户之间的使用者通道相关性至少是I.I.D的相关性的两倍。瑞利褪色频道。其次，我们计算闭合形式中的用户间通道相关性，其函数是用户间角相关性，底座天线的数量和基础站间间距的函数。我们的分析表明，使用者角相关性增加了用户间通道相关性。用户间通道相关用更大的基础站阵列孔（即更多的天线和较大的 - 安滕纳间距）减小。第三，我们通过数值实验来解释测量值，以表明用户间角相关性可能导致实用大规模MIMO通道中的显着用户间通道相关性。
In practical propagation environments, different massive MIMO users can have correlated angles in spatial paths. In this paper, we study the effect of angle correlation on inter-user channel correlation via a combination of measurement and analysis. We show three key results. First, we collect a massive MIMO channel dataset for examining the inter-user channel correlation in a real-world propagation environment; the dataset is now open-access. We observed channel correlation higher than $0.48$ for all close-by users. Additionally, over $30$ % of far-away users, even when they are tens of wavelengths apart, have inter-user channel correlation that is at least twice higher than the correlation in the i.i.d. Rayleigh fading channel. Second, we compute the inter-user channel correlation in closed-form as a function of inter-user angle correlation, the number of base-station antennas, and base-station inter-antenna spacing. Our analysis shows that inter-user angle correlation increases the inter-user channel correlation. Inter-user channel correlation reduces with a larger base-station array aperture, i.e., more antennas and larger inter-antenna spacing. Third, we explain the measurements with numerical experiments to show that inter-user angle correlation can result in significant inter-user channel correlation in practical massive MIMO channels.
