论文标题
巨大的MIMO的传输和接收阵列增益的限制
Limits of Transmit and Receive Array Gain in Massive MIMO
论文作者
论文摘要
在本文中，我们考虑了大量MIMO系统的发射和接收天线阵列增益。特别是，我们查看它们对阵列中天线的数量的依赖，以及均匀的线性和均匀圆形阵列的天线间距。众所周知，发射阵列的增长在某个天线间距下饱和，但是尚未考虑接收阵列增益。通过基于多重通信理论的物理一致的分析，我们表明接收阵列增益不饱和，但是当接收器没有解耦网络时，在某个天线间距处存在峰值。由于为大规模MIMO实施脱钩网络是不可能的，因此这是一个合理的假设。此外，我们分析了阵列增益如何根据天线间距和天线阵列的大小而变化并得出设计建议。
In this paper, we consider the transmit and receive antenna array gain of massive MIMO systems. In particular, we look at their dependence on the number of antennas in the array, and the antenna spacing for uniform linear and uniform circular arrays. It is known that the transmit array gain saturates at a certain antenna spacing, but the receive array gain had not been considered. With our physically consistent analysis based on the Multiport Communication Theory, we show that the receive array gain does not saturate, but that there is a peak at a certain antenna spacing when there is no decoupling network at the receiver. As implementing a decoupling network for massive MIMO would be almost impossible, this is a reasonable assumption. Furthermore, we analyze how the array gain changes depending on the antenna spacing and the size of the antenna array and derive design recommendations.
