Parametrization of High-Rank Line-of-Sight MIMO Channels with Reflected Paths

Parametrization of High-Rank Line-of-Sight MIMO Channels with Reflected Paths
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具有反射路径的高阶视距 MIMO 信道的参数化

DOI:
10.1109/spawc51304.2022.9833962
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发表时间:
2022
期刊:
IEEE SPAWC
影响因子:
--
通讯作者:
Mezzavilla, Marco
Mezzavilla, Marco
中科院分区:
--
文献类型:
--
作者:
Hu, Yaqi;Yin, Mingsheng;Rangan, Sundeep;Mezzavilla, Marco

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在毫米波和太赫兹通信中,高阶视距(LOS)MIMO系统引起了人们的极大关注。这些频率中的小波长能够实现远距离的海量数据速率的空间多路复用。这样的系统也被考虑用于多路径非视距(NLOS)环境。在这些情况下,基于平面波的标准信道模型不能捕获对空间多路复用建模所需的每个波阵面的曲率。该工作提出了一种新颖而简单的多路径无线信道参数化方法,其中每条路径由带有反射像源的LOS路径代替。该模型完全捕捉到了每个波阵面的球面性质,并且只使用了相对于标准平面波模型的两个附加参数。此外,在标准光线跟踪中可以很容易地获取这些参数。在密集城区的28 GHz和140 GHz的详细射线跟踪模拟中,验证了该方法的准确性。
High-rank line-of-sight (LOS) MIMO systems have attracted considerable attention for millimeter wave and THz communications. The small wavelengths in these frequencies enable spatial multiplexing with massive data rates at long distances. Such systems are also being considered for multi-path non-LOS (NLOS) environments. In these scenarios, standard channels models based on plane waves cannot capture the curvature of each wave front necessary to model spatial multiplexing. This work presents a novel and simple multi-path wireless channel parametrization where each path is replaced by a LOS path with a reflected image source. The model fully captures the spherical nature of each wave front and uses only two additional parameters relative to the standard plane wave model. Moreover, the parameters can be easily captured in standard ray tracing. The accuracy of the approach is demonstrated on detailed ray tracing simulations at 28GHz and 140GHz in a dense urban area.
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