This study presents a study on the radio channel modelling for realising reliable wireless communication in kitchen environments. The study allows optimising the wireless communication between a cooking pot and the kitchen hood in a smart home's kitchen. The delay, angular and path loss characteristics of the wireless channel are obtained from channel sounding measurements. The authors compared path loss at frequencies 868 MHz, 2.4 and 5.25 GHz. The influence of the metallic pot on the antenna characteristics is assessed by measuring the radiation pattern of the antenna. The antenna gain increases when the antenna is placed next to the metallic pot. Based on the channel sounding measurements and antenna model, a two-ray channel model is proposed consisting of one line-of-sight component and a component caused by reflections on the hood and hob. For the validation of the proposed model, a narrowband patch antenna is designed and used for measurements in a real kitchen. The validation confirms the general applicability of the proposed method. The results of the joint channel and antenna model are used in link budget calculations. Via the link budget, the minimum required TX power to allow reliable wireless communication is calculated.

中文翻译：

---

智能厨房灶具环境的通道建模

这项研究提出了一种用于在厨房环境中实现可靠的无线通信的无线电信道建模的研究。这项研究可以优化智能家居厨房中烹饪锅和厨房油烟机之间的无线通信。无线信道的延迟，角度和路径损耗特性可从信道探测测量中获得。作者比较了868 MHz，2.4和5.25 GHz频率下的路径损耗。通过测量天线的辐射方向图可以评估金属锅对天线特性的影响。当天线靠近金属锅放置时，天线增益会增加。基于信道探测测量结果和天线模型，提出了一种两线信道模型，该模型由一个视线组件和一个由机罩和炉架反射引起的组件组成。为了验证所提出的模型，设计了窄带贴片天线，并将其用于实际厨房中的测量。验证确认了所提出方法的一般适用性。联合信道和天线模型的结果用于链路预算计算。通过链路预算，计算出允许可靠的无线通信所需的最小TX功率。