Indoor Office Wideband Millimeter-Wave Propagation Measurements and Channel Models at 28 and 73 GHz for Ultra-Dense 5G Wireless Networks
Indoor Office Wideband Millimeter-Wave Propagation Measurements and Channel Models at 28 and 73 GHz for Ultra-Dense 5G Wireless Networks
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DOI：
10.1109/access.2015.2486778
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发表时间：
2015-01-01
期刊：
影响因子：
3.9
通讯作者：
Deng, Sijia
中科院分区：
文献类型：
--
作者：
MacCartney, George R.;Rappaport, Theodore S.;Deng, Sijia
超宽带毫米波 (mmWave) 传播测量是在纽约布鲁克林市中心纽约大学校园的典型室内办公环境中在 28 GHz 和 73 GHz 频段进行的。这些测量提供了大规模路径损耗和时间统计数据，这对于未来毫米波频段的超密集室内无线网络非常有用。本文介绍了采用每秒 400 兆芯片的宽带滑动相关器通道发声器进行测量的详细信息，并使用可旋转的高方向性喇叭天线进行同极化和交叉极化天线配置。测量环境是一个封闭式的室内场景，包括视线和非视线走廊、走廊、隔间农场和相邻房间的通信链路。基于从独特的发射机和接收机天线指向角组合获取的 14 000 多个定向功率延迟曲线，提出并评估了众所周知的新型单频和多频定向和全向大规模路径损耗模型。针对任意极化耦合的情况以及共极化和交叉极化天线方向的特定情况，提供了根据方向测量合成的全向路径损耗模型。结果表明，与之前的 3GPP 和 ITU 室内传播模型相比，这里提供的新型大规模路径损耗模型更简单、更基于物理，因为之前的 3GPP 和 ITU 室内传播模型需要更多的模型参数，并且提供的额外精度很少，并且缺乏物理基础。针对同极化、交叉极化和组合极化场景，使用定向天线的毫米波系统的多径时间色散统计数据表明，当使用发射机和接收机天线指向角时，可以减少多径均方根延迟扩展，从而产生最强的接收功率。附录中给出了所有路径损耗模型的原始全向路径损耗数据和封闭式优化公式。
Ultra-wideband millimeter-wave (mmWave) propagation measurements were conducted in the 28- and 73-GHz frequency bands in a typical indoor office environment in downtown Brooklyn, New York, on the campus of New York University. The measurements provide large-scale path loss and temporal statistics that will be useful for ultra-dense indoor wireless networks for future mmWave bands. This paper presents the details of measurements that employed a 400 Megachips-per-second broadband sliding correlator channel sounder, using rotatable highly directional horn antennas for both co-polarized and cross polarized antenna configurations. The measurement environment was a closed-plan in-building scenario that included a line-of-sight and non-line-of-sight corridor, a hallway, a cubicle farm, and adjacent-room communication links. Well-known and new single-frequency and multi-frequency directional and omnidirectional large-scale path loss models are presented and evaluated based on more than 14 000 directional power delay profiles acquired from unique transmitter and receiver antenna pointing angle combinations. Omnidirectional path loss models, synthesized from the directional measurements, are provided for the case of arbitrary polarization coupling, as well as for the specific cases of co-polarized and cross-polarized antenna orientations. The results show that novel large-scale path loss models provided here are simpler and more physically based compared to previous 3GPP and ITU indoor propagation models that require more model parameters and offer very little additional accuracy and lack a physical basis. Multipath time dispersion statistics for mmWave systems using directional antennas are presented for co-polarization, cross polarization, and combined-polarization scenarios, and show that the multipath root mean square delay spread can be reduced when using transmitter and receiver antenna pointing angles that result in the strongest received power. Raw omnidirectional path loss data and closed-form optimization formulas for all path loss models are given in the Appendices.