NELoRa-Bench: A Benchmark for Neural-enhanced LoRa Demodulation

TL;DR

This paper introduces NELoRa-Bench, a benchmark dataset for neural-enhanced LoRa demodulation, demonstrating significant SNR improvements over standard methods in low-power IoT communications.

Contribution

It provides a new dataset and benchmark for neural-enhanced LoRa demodulation, enabling improved decoding performance in low-SNR conditions.

Findings

NELoRa achieves 1.84-2.35 dB SNR gain over standard LoRa decoder.

The dataset includes 27,329 LoRa symbols with spreading factors 7 to 10.

The benchmark facilitates further research in neural-enhanced LoRa demodulation.

Abstract

Low-Power Wide-Area Networks (LPWANs) are an emerging Internet-of-Things (IoT) paradigm marked by low-power and long-distance communication. Among them, LoRa is widely deployed for its unique characteristics and open-source technology. By adopting the Chirp Spread Spectrum (CSS) modulation, LoRa enables low signal-to-noise ratio (SNR) communication. The standard LoRa demodulation method accumulates the chirp power of the whole chirp into an energy peak in the frequency domain. In this way, it can support communication even when SNR is lower than -15 dB. Beyond that, we proposed NELoRa, a neural-enhanced decoder that exploits multi-dimensional information to achieve significant SNR gain. This paper presents the dataset used to train/test NELoRa, which includes 27,329 LoRa symbols with spreading factors from 7 to 10, for further improvement of neural-enhanced LoRa demodulation. The dataset shows that NELoRa can achieve 1.84-2.35 dB SNR gain over the standard LoRa decoder. The dataset and codes can be found at https://github.com/daibiaoxuwu/NeLoRa_Dataset.