University of Oulu

I. Ramezanipour, P. H. J. Nardelli, H. Alves and A. Pouttu, "Increasing the Throughput of an Unlicensed Wireless Network through Retransmissions," 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), Porto, 2018, pp. 1-5. doi: 10.1109/VTCSpring.2018.8417709

Increasing the throughput of an unlicensed wireless network through retransmissions

Saved in:
Author: Ramezanipour, Iran1; Nardelli , Pedro H. J.2; Alves, Hirley1;
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu
2Lappeenranta University of Technology, Lappeenranta
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2018
Publish Date: 2018-10-12


This paper analyzes the throughput of an unlicensed wireless network where messages decoded in outage may be retransmitted. We assume that some wireless devices such as sensors are the unlicensed users, which communicate in the licensed uplink channel. In this case, the licensed users that interfere with the unlicensed transmissions devices are mobile devices whose spatial distribution are assumed to follow a Poisson point process with respect to a reference unlicensed link. We investigate how the number of allowed retransmissions and the spectrum efficiency jointly affect the throughput in [bits/s/Hz] of a reference unlicensed link for different licensed network densities, constrained by a given required error rate. The optimal throughput is derived for this case as a function of the network density. We also prove that the optimal constrained throughput can always reach the unconstrained optimal value. Our numerical results corroborate those of the analytical findings, also illustrating how the number of allowed retransmissions that leads to the optimal throughput changes with the error rate requirements.

see all

Series: IEEE Vehicular Technology Conference
ISSN: 1550-2252
ISSN-E: 2577-2465
ISSN-L: 1550-2252
ISBN: 978-1-5386-6354-7 978-1-5386-6356-1
ISBN Print: 978-1-5386-6355-4
DOI: 10.1109/VTCSpring.2018.8417709
Host publication: 2018 IEEE 87th Vehicular Technology Conference (VTC Spring) : proceedings
Conference: IEEE Vehicular Technology Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work is partially supported by Aka Project SAFE (Grant n.303532) and Strategic Research Council/Aka BCDC Energy (Grant n.292854).
Academy of Finland Grant Number: 303532
Detailed Information: 303532 (Academy of Finland Funding decision)
292854 (Academy of Finland Funding decision)
Copyright information: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.