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Effects of Array Orientations on Degrees of Freedom for 3D LoS Channels in Short-Range Communications

机译:短距离通信中阵列方向对3D LoS通道自由度的影响

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摘要

In this letter, we investigate the spatial degrees of freedom (DoF) of line-of-sight (LoS) channels in three-dimensional (3D) space with respect to the array orientations in short-range communications. First, the corresponding response of LoS channels is modeled using the spherical-wave model (SWM). The analytical expression for the spatial DoF of LoS channels with various array orientations is then derived and compared with that obtained in long-range communications. Both the analytical and simulation results show that the array orientations have a significant impact on the spatial DoF of short-range LoS channels.
机译:在这封信中,我们针对短距离通信中的阵列方向研究了三维(3D)空间中视线(LoS)通道的空间自由度(DoF)。首先,使用球面波模型(SWM)对LoS通道的相应响应进行建模。然后导出具有各种阵列方向的LoS信道的空间自由度的解析表达式,并将其与远程通信中获得的解析表达式进行比较。分析和仿真结果均表明,阵列方向对短距离LoS通道的空间自由度有重要影响。

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