A research of the propagation of LoRa signals at 433 and 868 MHz in difficult urban conditions

2nd International Conference "Cognitive Robotics"

工业技术;无线电电子学;计算机科学

Eremin, V.^1 ; Borisov, A.^1

Altai State Technical University Named by I.I. Polzunova, Barnaul, Russia^1

关键词: Signal propagation;    Theoretical calculations;    Transmission distances;    Transmission ranges;    Urban conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/363/1/012014/pdf
DOI  :  10.1088/1757-899X/363/1/012014

来源: IOP

【 摘 要 】

The article examines the issue of investigating the propagation of LoRa signals at 433 MHz and 868 MHz in difficult urban conditions. A theoretical calculation was made, which showed that the signal propagation distance is about 1.8 km for the module with a frequency of 433 MHz and about 915 m for the 868 MHz frequency. Experimental studies show that the transmission distance of the 868 MHz module is approximately 660 m, module 433 MHz - 730 m. The discrepancy is due to the influence of interference, which is always present in the modern city, as well as with complex and diverse buildings, which is not taken into account in the parameter SOM when calculating the transmission range.