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arXiv · 2510.23152

Exploring LR-FHSS Modulation for Enhanced IoT Connectivity: A Measurement Campaign

Alexis Delplace·Samer Lahoud·Kinda Khawam
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Abstract

This paper presents the first comprehensive real-world measurement campaign comparing LR-FHSS and LoRa modulations within LoRaWAN networks in urban environments. Conducted in Halifax, Canada, the campaign used a LoRaWAN platform capable of operating both modulations in the FCC-regulated US915 band. Real-world measurements are crucial for capturing the effects of urban topology and signal propagation challenges, which are difficult to fully replicate in simulations. Results show that LR-FHSS can achieve up to a 20% improvement in Packet Reception Rate (PRR) over traditional LoRa in dense urban areas. Additionally, the study investigated path loss and Received Signal Strength Indicator (RSSI), finding that LR-FHSS achieved a minimum RSSI of -138 dBm compared to LoRa's -120 dBm. The findings demonstrate that the introduction of LR-FHSS enhances communication robustness and reliability under regulatory limitations and suggest promising applications in LoRaWAN networks.

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Alexis Delplace, Samer Lahoud, Kinda Khawam. 2025-10-27. Exploring LR-FHSS Modulation for Enhanced IoT Connectivity: A Measurement Campaign. https://arxiv.org/abs/2510.23152

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