38 GHz and 60 GHz angle-dependent propagation for cellular & peer-to-peer wireless communications
38 GHz and 60 GHz angle-dependent propagation for cellular & peer-to-peer wireless communications
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DOI：
10.1109/icc.2012.6363891
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
T. Rappaport;Eshar Ben-Dor;J. Murdock;Y. Qiao
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文献类型：
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作者：
T. Rappaport;Eshar Ben-Dor;J. Murdock;Y. Qiao
随着大规模宽带半导体的成本在毫米波 (mm-wave) 频率上持续下降，将 LMDS 频谱（28-38 GHz 频段）和 60 GHz 频段用于蜂窝/移动和点对点无线网络具有巨大潜力。这项工作介绍了使用宽带滑动相关器信道探测仪和可操纵天线在 38 GHz 和 60 GHz 载波频率下进行的城市蜂窝和点对点射频宽带信道测量，并提供了测量结果，显示传播时间延迟扩展和路径损耗与多种类型的现实环境中的间隔距离和天线指向角的函数关系。这里提供的数据显示，在 38 GHz 时，无障碍站点线 (LOS) 通道遵循自由空间传播路径损耗，而非 LOS (NLOS) 通道具有较大的多径延迟扩展，并且可以利用许多不同的指向角度来提供传播链路。在 60 GHz 下，路径损耗明显更大、延迟扩展更小，并且用于创建链路的独特天线角度更少。对于 38 GHz 和 60 GHz，我们展示了 RMS 延迟扩展和天线指向角之间的经验关系，并观察到额外路径损耗（自由空间之上）与发射机到接收机的间隔距离呈反比关系。
As the cost of massively broadband® semiconductors continue to be driven down at millimeter wave (mm-wave) frequencies, there is great potential to use LMDS spectrum (in the 28-38 GHz bands) and the 60 GHz band for cellular/mobile and peer-to-peer wireless networks. This work presents urban cellular and peer-to-peer RF wideband channel measurements using a broadband sliding correlator channel sounder and steerable antennas at carrier frequencies of 38 GHz and 60 GHz, and presents measurements showing the propagation time delay spread and path loss as a function of separation distance and antenna pointing angles for many types of real-world environments. The data presented here show that at 38 GHz, unobstructed Line of Site (LOS) channels obey free space propagation path loss while non-LOS (NLOS) channels have large multipath delay spreads and can exploit many different pointing angles to provide propagation links. At 60 GHz, there is notably more path loss, smaller delay spreads, and fewer unique antenna angles for creating a link. For both 38 GHz and 60 GHz, we demonstrate empirical relationships between the RMS delay spread and antenna pointing angles, and observe that excess path loss (above free space) has an inverse relationship with transmitter-to-receiver separation distance.