This project investigates the packet delivery performance of Long-Range Frequency Hopping Spread Spectrum (LR-FHSS), a modulation technique introduced in LoRaWAN 1.0.4 to extend coverage and improve network capacity in Low Power Wide Area Networks (LPWANs). The objective is to evaluate LR-FHSS performance in real terrestrial environments by comparing it against conventional LoRa modulation under equivalent conditions. The analysis focuses on the impact of distance and propagation conditions on signal quality and reliability. The study involves an outdoor measurement campaign conducted in the Castelldefels area, using an LR-FHSS-enabled gateway and an end-device transmitting with both LoRa and LR-FHSS at various data rates. Prior to field testing, a radio environment simulation was carried out using CloudRF to estimate expected coverage and identify suitable areas for data collection. Measurements were then taken along three distinct paths with varying terrain and urban features, capturing key performance indicators such as received signal strength (RSSI) and packet delivery ratio (PDR). The results confirm the robustness of LR-FHSS compared to LoRa, particularly under non-line-of-sight and long-range conditions. While LoRa data rates like DR0 and DR5 showed a sharp decline in connectivity beyond 1.5-2 km, LR-FHSS configurations such as DR8 and DR10 maintained reliable communication up to 3-4 km depending on the direction and local environment. These findings validate the potential of LR-FHSS for enhancing LPWAN scalability and reliability in challenging real-world scenarios.

Objectius de Desenvolupament Sostenible::9 - Indústria, Innovació i Infraestructura

Objectius de Desenvolupament Sostenible::11 - Ciutats i Comunitats Sostenibles