University of Oulu

J. P. Battistella Nadas, O. Onireti, R. D. Souza, H. Alves, G. Brante and M. A. Imran, Performance Analysis of Hybrid ARQ for Ultra-Reliable Low Latency Communications," in IEEE Sensors Journal, vol. 19, no. 9, pp. 3521-3531, 1 May1, 2019. doi: 10.1109/JSEN.2019.2891221

Performance analysis of hybrid ARQ for ultra-reliable low latency communications

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Author: Nadas, João Pedro Battistella1; Onireti, Oluwakayode1; Souza, Richard Demo2;
Organizations: 1School of Engineering, University of Glasgow, Glasgow, U.K.
2Department of Electrical and Electronics Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
3Centre for Wireless Communications, University of Oulu, Oulu, Finland
4Departament of Electrotechnics, Federal Technological University–Paraná, Curitiba, Brazil
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-09-25


Considering an ultra-reliable low latency communication scenario, we assess the trade-off in terms of energy consumption between achieving time diversity through retransmissions and having to communicate at a higher rate due to latency constraints. Our analysis considers Nakagami-m block-fading channels with Chase combining hybrid automatic repeat request. We derive a fixed-point equation to determine the best number of allowed transmission attempts considering the maximum possible energy spent, which yields insights into the system behavior. Furthermore, we compare the energy consumption of the proposed approach against direct transmission with frequency diversity. Results show substantial energy savings using retransmissions when selecting the maximum number of transmission attempts according to our approach. For instance, considering a Rayleigh channel and smart grid teleprotection applications, our approach uses around 8 times less energy per bit compared with a direct transmission with frequency diversity.

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Series: IEEE sensors journal
ISSN: 1530-437X
ISSN-E: 1558-1748
ISSN-L: 1530-437X
Volume: 19
Issue: 9
Pages: 3521 - 3531
DOI: 10.1109/JSEN.2019.2891221
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research was partly funded by EPSRC Global Challenges Research Fund – the DARE project – EP/P028764/1.
Copyright information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see