Next Article in Journal
An Empirical Study on Security Knowledge Sharing and Learning in Open Source Software Communities
Next Article in Special Issue
Ontology Middleware for Integration of IoT Healthcare Information Systems in EHR Systems
Previous Article in Journal / Special Issue
Connecting Smart Objects in IoT Architectures by Screen Remote Monitoring and Control
Article Menu
Issue 4 (December) cover image

Export Article

Open AccessFeature PaperArticle
Computers 2018, 7(4), 48; https://doi.org/10.3390/computers7040048

Performance Evaluation of HARQ Schemes for the Internet of Things

Department of Information Engineering, University of Padova, 35131 Padua, Italy
This paper is an extended version of the conference paper, Centenaro, M.; Ministeri, G.; Vangelista, L. A comparison of energy-efficient HARQ protocols for M2M communication in the finite block-length regime, 2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB), Montreal, QC, Canada, 4–7 October 2015.
*
Author to whom correspondence should be addressed.
Received: 20 August 2018 / Revised: 14 September 2018 / Accepted: 21 September 2018 / Published: 25 September 2018
Full-Text   |   PDF [371 KB, uploaded 25 September 2018]   |  

Abstract

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. View Full-Text
Keywords: HARQ; energy-efficiency; finite-blocklength regime; M2M; reliable wireless communication; IoT HARQ; energy-efficiency; finite-blocklength regime; M2M; reliable wireless communication; IoT
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Vangelista, L.; Centenaro, M. Performance Evaluation of HARQ Schemes for the Internet of Things. Computers 2018, 7, 48.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Computers EISSN 2073-431X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top