大规模多输入多输出进入Sub-GHz：LPWAN的实现与实验探索
Massive MIMO goes Sub-GHz: Implementation and Experimental Exploration for LPWANs
摘要：
在未授权频段中运行的低功耗广域网正在部署，以连接数量迅速增长的物联网设备。虽然未授权的sub-GHz频段为远程连接提供了有利的传播，但测量结果表明，节点的能耗仍然主要由影响其自主性的无线传输主导。我们研究了部署大规模多输入多输出技术的潜在好处，以提高系统的可靠性，同时支持低能耗设备在亚GHz频率下具有良好的覆盖范围。不同的天线配置和传播条件的影响进行了分析。两个实际的平均经验阵列增益和通道硬化检查。该评估展示了通道硬化的效果以及经验丰富的阵列增益的潜在好处。这些测量作为在sub-GHz频率下对大规模多输入多输出的信道条件的第一次评估，并且据我们所知，是同类中的第一次。
英文摘要：
Low-Power Wide-Area Networks operating in the unlicensed bands are being deployed to connect a rapidly growing number of Internet-of-Things devices. While the unlicensed sub-GHz band offers favorable propagation for long-range connections, measurements show that the energy consumption of the nodes is still mostly dominated by the wireless transmission affecting their autonomy. We investigate the potential benefits of deploying massive MIMO technology to increase system reliability and at the same time support low-energy devices with good coverage at sub-GHz frequencies. The impact of different antenna configurations and propagation conditions is analyzed. Both actual average experienced array gain and channel hardening are examined. The assessment demonstrates the effect of channel hardening as well as the potential benefits of the experienced array gain. These measurements serve as a first assessment of the channel conditions of massive MIMO at sub-GHz frequencies and are, to the best of our knowledge, the first of its kind.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
