论文标题
具有反射路径的高排名远距离MIMO通道的参数化和估计
Parametrization and Estimation of High-Rank Line-of-Sight MIMO Channels with Reflected Paths
论文作者
论文摘要
高级视线（LOS）MIMO系统引起了人们对毫米波和THZ通信的极大关注。这些频率中的小波长可以在长距离时以大量数据速率进行空间多路复用。对于多路径非LOS（NLOS）环境，也考虑了此类系统。在这些情况下，基于平面波的标准通道模型无法捕获建模空间多路复用所需的每个波前的曲率。这项工作提出了一种新颖而简单的多路线无线通道参数化，其中每个路径都被反射的图像源替换为LOS路径。该模型完全适用于具有镜面平面反射的所有路径，并捕获每个波前部的球形性质。重要的是，相对于标准平面波模型，该模型仅使用两个附加参数。此外，可以在标准射线跟踪中轻松捕获参数。该方法的准确性在详细的射线追踪模拟中，在28 GHz和140 GHz的密集城市区域中得到了证明。
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 channel 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 is valid for all paths with specular planar reflections and captures the spherical nature of each wave front. Importantly, it is shown that the model 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 28 GHz and 140 GHz in a dense urban area.
