The LR-FHSS System: Simulation and Validation

In recent years, advancements in satellites technology and a soared demand for bandwidth have spurred the creation and deployment of new cost-effective LEO constellations. This breakthrough has catalyzed the emergence of a novel branch of IoT devices capable of communicating with satellites. In fact, thanks to these new satellites at a closer distances from Earth, it is now possible for small low-power devices to communicate with satellites. The aim of this thesis is to analyze the physical layer of LR-FHSS (Long Range Frequency Hopping Spread Spectrum) proposed for the uplink of LoRaWAN (Long Range Wide Area Network), one of the most common systems for the massive Internet of Things in unlicensed spectrum. First, the thesis describes the LR-FHSS. Then a new Matlab simulator is introduced. Finally the performances are analyzed.