Abstract

LoRa Communication Systems face significant challenges in maintaining Quality of Services (QoS) when LoRaWAN networks must use Nano Cube Satellites that have limited resources and operate in Low Earth Orbit (LEO). This is due to dynamic link conditions, the occurrence of Doppler effects, and also power limitations. This research conducts a specific evaluation of the Non-Terrestrial Network (NTN) network operating robustly. And systematically this research analyzes the relationship between satellite elevation angles and measurements of Receive Signal Strength (RSSI) indicators, Signal to Noise Ratio (SNR), and Packet Error Rate (PER). And also combine the math model for Lik Budget calculation and Orbit propagation. The results of the simulation show RSSI values of $\mathbf{- 1 0 5 ~ d B m}$, SNR of $\mathbf{+ 8 ~ d B}$, and PER of $\mathbf{0. 5 \%}$. These represent critical reference points for reliable data transmission and reception. The findings also provide quantitative guidance for CubeSat constellation design as well as ground station planning that enables LoRa networks to work efficiently.

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