Performance Evaluation of HARQ Schemes for the Internet of Things
Hybrid Automatic Repeat reQuest (HARQ) techniques are widely employed in the most important wireless systems, e.g., the Long Term Evolution (LTE) cellular standard, to increase the reliability of the communication. Despite these schemes have been widely studied in literature in the past several year...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Computers |
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| Online Access: | http://www.mdpi.com/2073-431X/7/4/48 |
| _version_ | 1798024609942994944 |
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| author | Lorenzo Vangelista Marco Centenaro |
| author_facet | Lorenzo Vangelista Marco Centenaro |
| author_sort | Lorenzo Vangelista |
| collection | DOAJ |
| description | Hybrid Automatic Repeat reQuest (HARQ) techniques are widely employed in the most important wireless systems, e.g., the Long Term Evolution (LTE) cellular standard, to increase the reliability of the communication. Despite these schemes have been widely studied in literature in the past several years, the recent results obtained by Polyanskiy, Poor, and Verdú on the finite-blocklength regime disclosed new possibilities for the research on HARQ schemes. Indeed, new communications trends, which are usually part of the Internet of Things (IoT) paradigm, are characterized by very short packet sizes and a high reliability requirement and, therefore, they call for efficient HARQ techniques. In many scenarios, the energy efficiency of the communication plays a key role as well. In this paper, we aim at providing a comprehensive performance comparison of various kinds of HARQ schemes in the context of short-packet transmissions with energy constraints. We derive optimal power allocation strategies and we show that a minimum 50% energy saving can be achieved after very few transmission attempts if we enable packet combining at the receiver side. |
| first_indexed | 2024-04-11T18:05:21Z |
| format | Article |
| id | doaj.art-822c13ea68374cbb89139ff06aacc5a0 |
| institution | Directory Open Access Journal |
| issn | 2073-431X |
| language | English |
| last_indexed | 2024-04-11T18:05:21Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Computers |
| spelling | doaj.art-822c13ea68374cbb89139ff06aacc5a02022-12-22T04:10:21ZengMDPI AGComputers2073-431X2018-09-01744810.3390/computers7040048computers7040048Performance Evaluation of HARQ Schemes for the Internet of ThingsLorenzo Vangelista0Marco Centenaro1Department of Information Engineering, University of Padova, 35131 Padua, ItalyDepartment of Information Engineering, University of Padova, 35131 Padua, ItalyHybrid Automatic Repeat reQuest (HARQ) techniques are widely employed in the most important wireless systems, e.g., the Long Term Evolution (LTE) cellular standard, to increase the reliability of the communication. Despite these schemes have been widely studied in literature in the past several years, the recent results obtained by Polyanskiy, Poor, and Verdú on the finite-blocklength regime disclosed new possibilities for the research on HARQ schemes. Indeed, new communications trends, which are usually part of the Internet of Things (IoT) paradigm, are characterized by very short packet sizes and a high reliability requirement and, therefore, they call for efficient HARQ techniques. In many scenarios, the energy efficiency of the communication plays a key role as well. In this paper, we aim at providing a comprehensive performance comparison of various kinds of HARQ schemes in the context of short-packet transmissions with energy constraints. We derive optimal power allocation strategies and we show that a minimum 50% energy saving can be achieved after very few transmission attempts if we enable packet combining at the receiver side.http://www.mdpi.com/2073-431X/7/4/48HARQenergy-efficiencyfinite-blocklength regimeM2Mreliable wireless communicationIoT |
| spellingShingle | Lorenzo Vangelista Marco Centenaro Performance Evaluation of HARQ Schemes for the Internet of Things Computers HARQ energy-efficiency finite-blocklength regime M2M reliable wireless communication IoT |
| title | Performance Evaluation of HARQ Schemes for the Internet of Things |
| title_full | Performance Evaluation of HARQ Schemes for the Internet of Things |
| title_fullStr | Performance Evaluation of HARQ Schemes for the Internet of Things |
| title_full_unstemmed | Performance Evaluation of HARQ Schemes for the Internet of Things |
| title_short | Performance Evaluation of HARQ Schemes for the Internet of Things |
| title_sort | performance evaluation of harq schemes for the internet of things |
| topic | HARQ energy-efficiency finite-blocklength regime M2M reliable wireless communication IoT |
| url | http://www.mdpi.com/2073-431X/7/4/48 |
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