Within realization of the visions of the Internet-of-Things (IoT), Low Power Wide Area Networks (LPWANs) are undoubtedly one of the fields that attract high interest from both academic and industrial fields. To ensure reliable data exchange between low power and low data rate devices across long distances, which are the main aims of LPWAs, it is necessary to utilize advanced wireless communication technologies. Emerging LPWA technologies, for instance Long-Range (LoRa) and SigFox, offer many benefits for IoT. These technologies have been primarily developed for sub-GHz frequency bands, but, in the future, their deployment is also considered in the 2.4 GHz industrial, scientific and medical (ISM) bands. However, these unlicensed ISM bands are also used by other technologies for Wireless Local Area Network (WLAN also denoted as Wi-Fi) connectivity and other services, and therefore, coexistence issues can occur here in the future. The main aim of this paper is to perform a performance analysis of the LoRa radio signals interfered by Wi-Fi, using interferers confirming to different IEEE 802.11 family standards, in the 2.4 GHz ISM band. For this purpose, an automated measurement setup and methodology on Physical (PHY) layer are proposed and used. In general, the evaluated results confirm theoretical assumptions on high robustness of LoRa against interferences. However, our results reveal that this robustness of LoRa is highly depending not only on the used LoRa system parameters, but also on the interferer properties and the assumed coexistence scenarios (co-channel, in-band and adjacent channel interferences).

在物联网（IoT）愿景的实现中，低功耗广域网（LPWAN）无疑是引起学术界和工业界高度关注的领域之一。为了确保长距离低功率和低数据速率设备之间的可靠数据交换（这是LPWA的主要目标），有必要利用先进的无线通信技术。远程（LoRa）和SigFox等新兴的LPWA技术为物联网提供了许多好处。这些技术主要是为低于GHz的频带开发的，但是将来，在2.4 GHz工业，科学和医学（ISM）频带中也将考虑使用它们。然而，这些未经许可的ISM频段也被其他技术用于无线局域网（WLAN，也称为Wi-Fi）连接和其他服务，因此，将来可能会在这里出现共存问题。本文的主要目的是使用在2.4 GHz ISM频段内使用符合不同IEEE 802.11系列标准的干扰源，对Wi-Fi干扰的LoRa无线电信号进行性能分析。为此，提出并使用了物理层（PHY）上的自动测量设置和方法。通常，评估结果证实了LoRa抗干扰的高鲁棒性的理论假设。但是，我们的结果表明，LoRa的这种鲁棒性不仅取决于所使用的LoRa系统参数，