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Conference Papers Year : 2023

Recovering Headerless Frames in LR-FHSS

Abstract

Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) is a recent modulation designed for communications from low-power ground end-devices to Low-Earth Orbit (LEO) satellites. To decode a frame, an LR-FHSS gateway must receive at least one header replica and a large proportion of payload fragments. However, LR-FHSS headers will likely be lost when there are many concurrent transmissions. In this paper, we motivate the header loss problem with an analytical model, propose a linear programming model to extract headerless frames and design a cost-effective sliding window heuristic. Simulation results show that our approach exhibits near-optimal headerless detection and extraction results while ensuring a low computational cost. The proposed method is, therefore, suitable for future LR-FHSS gateways located onboard resource-constrained LEO satellites.
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Dates and versions

hal-04152028 , version 1 (05-07-2023)

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  • HAL Id : hal-04152028 , version 1

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Juan Andrés A Fraire, Alexandre Guitton, Oana Iova. Recovering Headerless Frames in LR-FHSS. International Conference on Embedded Wireless Systems and Networks, Sep 2023, Rende, Italy. pp.1-11. ⟨hal-04152028⟩
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