University of Oulu

J. M. d. S. Sant'Ana, S. Montejo-Sánchez, R. D. Souza and H. Alves, "Non-Orthogonal Replication Scheme for ALOHA Uplink in LPWAN," in IEEE Transactions on Industrial Informatics, doi: 10.1109/TII.2023.3280315

Non-orthogonal replication scheme for ALOHA uplink in LPWAN

Saved in:
Author: de Souza Sant'Ana, Jean Michel1; Montejo-Sánchez, Samuel2; Souza, Richard Demo3;
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu, Finland
2Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Santiago, Chile
3Department of Electrical and Electronics Engineering, Federal University of Santa Catarina, Florianóplis, Brazil
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2023
Publish Date: 2023-05-31


In this work, we address a novel replication scheme for Internet-of-Things (IoT) low power wide area networks (LPWAN), considering the ability of a gateway to recover, through successive interference cancellation (SIC), superposed signals in the power domain. We show that the introduced mathematical framework matches the Monte Carlo simulations. The proposed scheme outperforms typical transmission schemes, at least from 1 to 2 orders of magnitude, in terms of outage probability. We also show that the scheme fits well with previous replication schemes, outperforming their versions without non-orthogonal replications. Moreover, we show that the proposed scheme can be robust to cases with high SIC imperfection, presenting slight performance losses even in very harsh scenarios, as long as the constraints are met. Finally, we conclude that the proposed scheme can be more energy efficient than previous replication schemes and achieve better reliability in traffic-loaded networks.

see all

Series: IEEE transactions on industrial informatics
ISSN: 1551-3203
ISSN-E: 1941-0050
ISSN-L: 1551-3203
Issue: Online first
DOI: 10.1109/tii.2023.3280315
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been supported by the Academy of Finland, 6G Flagship program under Grant 346208. This work is supported in part in Brazil by CNPq (Grants 402378/2021-0, 305021/2021-4 and 401730/2022-0) and in Chile by ANID FONDECYT Iniciación (Grant 11200659).
Academy of Finland Grant Number: 346208
Detailed Information: 346208 (Academy of Finland Funding decision)
Copyright information: © The Author(s) 2023. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see