Battistella Nadas, J. P., Onireti, O. , Souza, R. D., Alves, H., Brante, G. and Imran, M. A. (2019) Performance analysis of hybrid ARQ for ultra-reliable low latency communications. IEEE Sensors Journal, 19(9), pp. 3521-3531. (doi: 10.1109/JSEN.2019.2891221)
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Abstract
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 blockfading 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 to a direct transmission with frequency diversity.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Imran, Professor Muhammad and Battistella Nadas, Joao and Onireti, Oluwakayode |
| Authors: | Battistella Nadas, J. P., Onireti, O., Souza, R. D., Alves, H., Brante, G., and Imran, M. A. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | IEEE Sensors Journal |
| Publisher: | IEEE |
| ISSN: | 1530-437X |
| ISSN (Online): | 1558-1748 |
| Published Online: | 07 January 2019 |
| Copyright Holders: | Copyright © 2018 IEEE |
| First Published: | First published in IEEE Sensors Journal 19(9):3521-3531 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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