基于Weichselberger模型的3D MIMO信道建模研究
发布时间：2018-07-24 21:56
【摘要】：3D MIMO(Three Dimension Multiple Input Multiple Output)技术是下一代通信系统(5G)关键的技术之一。为了更好地评估3D MIMO通信系统的性能,需要建立一种准确的3D MIMO信道模型。在现有的3D MIMO信道模型中,3D Kronecker模型由于其简单性而得到广泛应用。但3D Kronecker模型假设收发两端是不相关的,与实际信道特性不符。为解决该问题,本文在WINNER II中2D信道模型的基础上引入仰角维度,建立3D MIMO信道模型,并推导收发两端的相关矩阵,通过分解收发两端相关矩阵构建3D Weichselberger模型。本文着重分析六种典型场景下3D Weichselberger模型的空间耦合矩阵,并通过理论推导分析各种场景下的3D MIMO信道特征,同时推导出3D Weichselberger模型的互信息上限的表达式。仿真结果显示,相对于3D Kronecker模型,3D Weichselberger模型能更准确地描述3D信道的传播特征。
[Abstract]:3D MIMO (Three Dimension Multiple Input Multiple Output) is one of the key technologies in the next generation communication system (5 G). In order to better evaluate the performance of 3D MIMO communication system, it is necessary to establish an accurate 3D MIMO channel model. Among the existing 3D MIMO channel models, the 3D Kronecker model is widely used because of its simplicity. However, the 3D Kronecker model assumes that the two ends of the transceiver are irrelevant, which does not correspond to the actual channel characteristics. In order to solve this problem, based on 2D channel model in WINNER II, the elevation dimension is introduced, the 3D MIMO channel model is established, and the correlation matrix between the two ends of the transceiver is derived, and the 3D Weichselberger model is constructed by decomposing the correlation matrix between the two ends of the transceiver and transceiver. In this paper, the spatial coupling matrix of 3D Weichselberger model under six typical scenarios is analyzed, and the characteristics of 3D MIMO channel under various scenarios are analyzed theoretically. At the same time, the expression of upper limit of mutual information of 3D Weichselberger model is derived. Simulation results show that compared with 3D Kronecker model, 3D Weichselberger model can describe the propagation characteristics of 3D channel more accurately.
【作者单位】： 南京邮电大学通信与信息工程学院;
【基金】：国家自然科学基金(61471200)
【分类号】：TN929.5
本文编号：2142776
[Abstract]:3D MIMO (Three Dimension Multiple Input Multiple Output) is one of the key technologies in the next generation communication system (5 G). In order to better evaluate the performance of 3D MIMO communication system, it is necessary to establish an accurate 3D MIMO channel model. Among the existing 3D MIMO channel models, the 3D Kronecker model is widely used because of its simplicity. However, the 3D Kronecker model assumes that the two ends of the transceiver are irrelevant, which does not correspond to the actual channel characteristics. In order to solve this problem, based on 2D channel model in WINNER II, the elevation dimension is introduced, the 3D MIMO channel model is established, and the correlation matrix between the two ends of the transceiver is derived, and the 3D Weichselberger model is constructed by decomposing the correlation matrix between the two ends of the transceiver and transceiver. In this paper, the spatial coupling matrix of 3D Weichselberger model under six typical scenarios is analyzed, and the characteristics of 3D MIMO channel under various scenarios are analyzed theoretically. At the same time, the expression of upper limit of mutual information of 3D Weichselberger model is derived. Simulation results show that compared with 3D Kronecker model, 3D Weichselberger model can describe the propagation characteristics of 3D channel more accurately.
【作者单位】： 南京邮电大学通信与信息工程学院;
【基金】：国家自然科学基金(61471200)
【分类号】：TN929.5
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