A Non-Stationary 3-D Wideband Twin-Cluster Model for 5G Massive MIMO Channels
A Non-Stationary 3-D Wideband Twin-Cluster Model for 5G Massive MIMO Channels
复制标题
适用于 5G 大规模 MIMO 信道的非平稳 3D 宽带双簇模型
DOI：
10.1109/jsac.2014.2328131
复制
发表时间：
2014-06-01
影响因子：
16.4
通讯作者：
He, Yejun
中科院分区：
文献类型：
--
作者：
Wu, Shangbin;Wang, Cheng-Xiang;He, Yejun
针对载波频率为千兆赫（GHz）量级的大规模多输入多输出（MIMO）通信系统，提出了一种新的非平稳三维宽带双簇信道理论模型。由于天线阵列的尺寸在大规模MIMO中不可忽视，因此该模型考虑了近场效应而不是远场效应。这些包括球面波前假设和一个生灭过程来模拟星团的非平稳特性，如星团在阵列和时间轴上的出现和消失。通过相关函数、条件数和角功率谱等统计特性研究了它们对大规模MIMO信道的影响。此外，还讨论了仰角对相关函数的影响。并对理论模型提出了相应的仿真模型。最后，数值分析表明，所提出的信道模型可以作为大规模MIMO信道建模的设计框架。
This paper proposes a novel theoretical non-stationary three dimensional (3-D) wideband twin-cluster channel model for massive multiple-input multiple-output (MIMO) communication systems with carrier frequencies on the order of gigahertz (GHz). As the dimension of antenna arrays cannot be ignored for massive MIMO, near field effects instead of far field effects are considered in the proposed model. These include the spherical wavefront assumption and a birth-death process to model non-stationary properties of clusters such as cluster appearance and disappearance on both the array and time axes. Their impacts on massive MIMO channels are investigated via statistical properties including correlation functions, condition numbers, and angular power spectra. Additionally, the impact of elevation angles on correlation functions is discussed. A corresponding simulation model for the theoretical model is also proposed. Finally, numerical analysis shows that the proposed channel models are able to serve as a design framework for massive MIMO channel modeling.