1. Probabilistic Allocation of Payload Code Rate and Header Copies in LR-FHSS Networks
- Author
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Farhat, Jamil de Araujo, Sant'Ana, Jean Michel de Souza, Rebelatto, João Luiz, Mahmood, Nurul Huda, Pasolini, Gianni, and Souza, Richard Demo
- Subjects
Electrical Engineering and Systems Science - Signal Processing ,Computer Science - Networking and Internet Architecture - Abstract
We evaluate the performance of the LoRaWAN Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) technique using a device-level probabilistic strategy for code rate and header replica allocation. Specifically, we investigate the effects of different header replica and code rate allocations at each end-device, guided by a probability distribution provided by the network server. As a benchmark, we compare the proposed strategy with the standardized LR-FHSS data rates DR8 and DR9. Our numerical results demonstrate that the proposed strategy consistently outperforms the DR8 and DR9 standard data rates across all considered scenarios. Notably, our findings reveal that the optimal distribution rarely includes data rate DR9, while data rate DR8 significantly contributes to the goodput and energy efficiency optimizations.
- Published
- 2024