3-D MIMO Parametric Stochastic Channel Model for Urban Macrocell Scenario
3-D MIMO Parametric Stochastic Channel Model for Urban Macrocell Scenario
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DOI：
10.1109/twc.2017.2695188
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发表时间：
2017-04
影响因子：
10.4
通讯作者：
Yang Zhang;Lihua Pang;Guangliang Ren;Feng-kui Gong;X. Liang;Jianwu Dou;Jiandong Li
中科院分区：
文献类型：
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作者：
Yang Zhang;Lihua Pang;Guangliang Ren;Feng-kui Gong;X. Liang;Jianwu Dou;Jiandong Li
对于潜在的3-D多输入多输出（3-D MIMO）算法的设计、性能评估和优化，精确的随机信道模型是必不可少的。同时，期望新的3-D MIMO信道模型是已经良好开发的2-D MIMO信道模型的进一步扩展，以允许容易的实现并促进可能的第三代合作伙伴项目标准化。本文首先展示了我们最近在城市宏小区场景中的外场信道测量活动，分别在基站和用户侧安装平面天线阵列和冠状天线阵列。从统计分析的角度来表征3-D MIMO信道，特别是在海拔域的一个全面的方法，然后详细说明。新方法的框架与主流的参数随机模型相吻合。此外，它是观察到，通过重新计算的大规模参数的统计数据，以及它们的互相关矩阵，以纠正存在的非正定问题，添加距离依赖的仰角扩展和引入的混合冯米塞斯费舍尔分布来描述之间的相互依赖关系的方位角和仰角，当前标准化的3-D信道模型的准确性可以提高。最后，数值结果验证了我们的建议的有效性。
For the design, performance evaluation, and optimization of potential 3-D multiple input and multiple output (3-D MIMO) algorithms, an accurate stochastic channel model is indispensable. Simultaneously, it is desirable for the new 3-D MIMO channel model to be a further expansion of already well developed 2-D MIMO channel models to allow easy implementation and facilitate possible $3^{rd}$ generation partnership project standardization. This paper first shows our recent outfield channel measurement campaigns in urban macrocell scenarios with a planar antenna array and a crown-shaped antenna array installed on the base station and the user sides, respectively. A comprehensive methodology from the statistical analysis perspective to characterize the 3-D MIMO channel, particularly, in the elevation domain, is then elaborated upon. The framework of the new approach coincides with mainstream parametric stochastic models. Moreover, it is observed that, by recalculating the statistics of the large scale parameters as well as their cross-correlation matrix to rectify existent non-positive definite problem, adding distance dependent elevation angular spread and introducing a mixture of Von Mises Fisher distributions to describe the interdependence between azimuth and elevation, the accuracy of current standardized 3-D channel models can be improved upon. Finally, numerical results verify the validity of our proposal.