A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding

Mathieu Xhonneux; Joachim Tapparel; Péter Scheepers; Orion Afisiadis; Alexios Balatsoukas-Stimming; David Bol; Jérôme Louveaux; Andreas Burg

doi:10.1109/IEEECONF53345.2021.9723151

A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding

Mathieu Xhonneux, Joachim Tapparel, Péter Scheepers, Orion Afisiadis, Alexios Balatsoukas-Stimming, David Bol, Jérôme Louveaux, Andreas Burg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

1 Citation (Scopus)

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Abstract

LoRaWAN is a popular wireless technology that provides long-range connectivity to Internet-of-Things devices using a bit-interleaved coded modulation. To minimize their energy consumption, LoRaWAN end-nodes implement a pure ALOHA access scheme, which leads to collisions among users at the gateway and a reduced throughput in crowded networks. To improve the throughput of interference-limited LoRaWAN networks, we design in this paper a successive interference cancellation receiver that is able to decode frames from two colliding users with the same spreading factor. By performing both a soft-demodulation and soft-decoding to recover the message of each interfering user, the proposed two-user receiver explicitly leverages the coded spread spectrum modulation of LoRa. We show that the joint usage of interleaving and coding is critical to achieve a decent cancellation of the strongest user. Simulation results indicate that our receiver successfully demodulates the frames of two interfering users with a 1.5 dB difference of received powers, even at very low signal-to-noise ratios.

Original language	English
Title of host publication	2021 55th Asilomar Conference on Signals, Systems, and Computers
Editors	Michael B. Matthews
Publisher	Institute of Electrical and Electronics Engineers
Pages	948-953
Number of pages	6
ISBN (Electronic)	978-1-6654-5828-3
DOIs	https://doi.org/10.1109/IEEECONF53345.2021.9723151
Publication status	Published - 4 Mar 2022
Event	55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021 - Virtual, Pacific Grove, United States Duration: 31 Oct 2021 → 3 Nov 2021 Conference number: 55

Conference

Conference	55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021
Abbreviated title	ACSSC
Country/Territory	United States
City	Pacific Grove
Period	31/10/21 → 3/11/21

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/IEEECONF53345.2021.9723151

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Xhonneux, M., Tapparel, J., Scheepers, P., Afisiadis, O., Balatsoukas-Stimming, A., Bol, D., Louveaux, J., & Burg, A. (2022). A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding. In M. B. Matthews (Ed.), 2021 55th Asilomar Conference on Signals, Systems, and Computers (pp. 948-953). Article 9723151 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IEEECONF53345.2021.9723151

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title = "A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding",

abstract = "LoRaWAN is a popular wireless technology that provides long-range connectivity to Internet-of-Things devices using a bit-interleaved coded modulation. To minimize their energy consumption, LoRaWAN end-nodes implement a pure ALOHA access scheme, which leads to collisions among users at the gateway and a reduced throughput in crowded networks. To improve the throughput of interference-limited LoRaWAN networks, we design in this paper a successive interference cancellation receiver that is able to decode frames from two colliding users with the same spreading factor. By performing both a soft-demodulation and soft-decoding to recover the message of each interfering user, the proposed two-user receiver explicitly leverages the coded spread spectrum modulation of LoRa. We show that the joint usage of interleaving and coding is critical to achieve a decent cancellation of the strongest user. Simulation results indicate that our receiver successfully demodulates the frames of two interfering users with a 1.5 dB difference of received powers, even at very low signal-to-noise ratios. ",

author = "Mathieu Xhonneux and Joachim Tapparel and P{\'e}ter Scheepers and Orion Afisiadis and Alexios Balatsoukas-Stimming and David Bol and J{\'e}r{\^o}me Louveaux and Andreas Burg",

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Xhonneux, M, Tapparel, J, Scheepers, P, Afisiadis, O, Balatsoukas-Stimming, A, Bol, D, Louveaux, J & Burg, A 2022, A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding. in MB Matthews (ed.), 2021 55th Asilomar Conference on Signals, Systems, and Computers., 9723151, Institute of Electrical and Electronics Engineers, pp. 948-953, 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021, Pacific Grove, California, United States, 31/10/21. https://doi.org/10.1109/IEEECONF53345.2021.9723151

A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding. / Xhonneux, Mathieu; Tapparel, Joachim; Scheepers, Péter et al.
2021 55th Asilomar Conference on Signals, Systems, and Computers. ed. / Michael B. Matthews. Institute of Electrical and Electronics Engineers, 2022. p. 948-953 9723151.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding

AU - Xhonneux, Mathieu

AU - Tapparel, Joachim

AU - Scheepers, Péter

AU - Afisiadis, Orion

AU - Balatsoukas-Stimming, Alexios

AU - Bol, David

AU - Louveaux, Jérôme

AU - Burg, Andreas

N1 - Conference code: 55

PY - 2022/3/4

Y1 - 2022/3/4

N2 - LoRaWAN is a popular wireless technology that provides long-range connectivity to Internet-of-Things devices using a bit-interleaved coded modulation. To minimize their energy consumption, LoRaWAN end-nodes implement a pure ALOHA access scheme, which leads to collisions among users at the gateway and a reduced throughput in crowded networks. To improve the throughput of interference-limited LoRaWAN networks, we design in this paper a successive interference cancellation receiver that is able to decode frames from two colliding users with the same spreading factor. By performing both a soft-demodulation and soft-decoding to recover the message of each interfering user, the proposed two-user receiver explicitly leverages the coded spread spectrum modulation of LoRa. We show that the joint usage of interleaving and coding is critical to achieve a decent cancellation of the strongest user. Simulation results indicate that our receiver successfully demodulates the frames of two interfering users with a 1.5 dB difference of received powers, even at very low signal-to-noise ratios.

AB - LoRaWAN is a popular wireless technology that provides long-range connectivity to Internet-of-Things devices using a bit-interleaved coded modulation. To minimize their energy consumption, LoRaWAN end-nodes implement a pure ALOHA access scheme, which leads to collisions among users at the gateway and a reduced throughput in crowded networks. To improve the throughput of interference-limited LoRaWAN networks, we design in this paper a successive interference cancellation receiver that is able to decode frames from two colliding users with the same spreading factor. By performing both a soft-demodulation and soft-decoding to recover the message of each interfering user, the proposed two-user receiver explicitly leverages the coded spread spectrum modulation of LoRa. We show that the joint usage of interleaving and coding is critical to achieve a decent cancellation of the strongest user. Simulation results indicate that our receiver successfully demodulates the frames of two interfering users with a 1.5 dB difference of received powers, even at very low signal-to-noise ratios.

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DO - 10.1109/IEEECONF53345.2021.9723151

M3 - Conference contribution

AN - SCOPUS:85127084134

SP - 948

EP - 953

BT - 2021 55th Asilomar Conference on Signals, Systems, and Computers

A2 - Matthews, Michael B.

PB - Institute of Electrical and Electronics Engineers

T2 - 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021

Y2 - 31 October 2021 through 3 November 2021

ER -

Xhonneux M, Tapparel J, Scheepers P, Afisiadis O, Balatsoukas-Stimming A, Bol D et al. A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding. In Matthews MB, editor, 2021 55th Asilomar Conference on Signals, Systems, and Computers. Institute of Electrical and Electronics Engineers. 2022. p. 948-953. 9723151 doi: 10.1109/IEEECONF53345.2021.9723151

A Two-User Successive Interference Cancellation LoRa Receiver with Soft-Decoding

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