In this paper, we present a new receiver design, which significantly improves performance in the Internet of Things networks such as LoRa, i.e., having a chirp spread spectrum modulation. The proposed receiver is able to demodulate multiple users simultaneously transmitted over the same frequency channel with the same spreading factor. From a non-orthogonal multiple access point of view, it is based on the power domain and uses serial interference cancellation. Simulation results show that the receiver allows a significant increase in the number of connected devices in the network.
@article{arxiv.2103.03146,
title = {Serial Interference Cancellation for Improving uplink in LoRa-like Networks},
author = {Angesom Ataklity Tesfay and Eric Pierre Simon and Guillaume Ferré and Laurent Clavier},
journal= {arXiv preprint arXiv:2103.03146},
year = {2021}
}