Ang Xia, Zhongyu Wang, S. Geng, Xiongwen Zhao, Rui Zhang, Yongsheng Liu, Yigang Geng
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引用次数: 7
摘要
本文基于对LOS和NLOS场景进行的28 GHz MIMO ($4\ × 4$)信道测量，分析了信道容量和系统链路预算。MIMO信道容量是距离的函数。此外，还研究了天线单元间信道容量的空间相关性。具体来说，考虑到MIMO天线单元的不相关、部分相关和完全相关，对信道容量进行了研究。结果表明，相关系数总体上随距离的增加而减小。不相关信道比部分相关信道和完全相关信道的容量大得多。在完全相关MIMO信道下，仿真结果与实测数据吻合较好。这表明真正的MIMO信道更接近于完全相关衰落信道。所得结果可为5G无线通信系统的设计提供参考。
28 GHz MIMO Channel Capacity Analysis for 5G Wireless Communication Systems
In this paper, based on 28 GHz MIMO ($4\times 4$) channel measurements performed for both LOS and NLOS scenarios, channel capacity and system link budget are analyzed. The MIMO channel capacity is modeled as function of distance. Moreover, spatial correlation between antenna elements on channel capacity is studied. Specifically, considering MIMO antenna elements are for uncorrelated, partial-correlation and full-correlation, channel capacity is investigated. Results show that correlation coefficient decreases with the increasing of distance generally. The uncorrelated channel can achieve much bigger capacity than partial correlation and complete correlation channels. In complete correlation MIMO channel, simulation results fit quite well with measurement data. This indicates that the real MIMO channel is more close to complete correlation fading channel. The provided results are useful for design of 5G wireless communication systems.
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