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Correction to Sensors 2021, 21(9), 3073.
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Correction

Correction: Ferrier et al. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073

by
Laurent Ferrier
1,2,*,
Hussein Ibrahim
2,
Mohamad Issa
3 and
Adrian Ilinca
1
1
Wind Energy Research Laboratory, Université du Québec à Rimouski, Rimouski, QC G5L 3A1, Canada
2
Institut Technologique de la Maintenance Industrielle, Sept-Îles, QC G5L 3A1, Canada
3
Institut Maritime du Québec à Rimouski, Rimouski, QC G5L 3A1, Canada
*
Author to whom correspondence should be addressed.
Sensors 2026, 26(10), 2941; https://doi.org/10.3390/s26102941
Submission received: 21 April 2026 / Accepted: 26 April 2026 / Published: 8 May 2026
(This article belongs to the Section Communications)
Versions Notes
Text Correction
In the original publication [1], there are several unclear expressions. The corrections are as follows:
In the Abstract, the sentence “Furthermore, the magnetic field in some regions of the planet and very often in isolated areas undergoes partial or total absorption, known as white areas, making the propagation of the signal very delicate” should be replaced by “Furthermore, in many remote regions of the planet, radio communication remains difficult due to geographical constraints, environmental attenuation, and the lack of telecommunication infrastructure. These regions are often referred to as “white areas,” meaning zones with little or no communication coverage”.
In the eighth paragraph of the Introduction, the sentence “The magnetic field in some regions of the planet and very often in remote areas undergoes partial or total absorption known as white areas [11], making the propagation of the signal very delicate [12]” should be replaced by “In many remote regions of the planet, radio communication remains difficult due to geographical constraints, environmental attenuation, and the lack of telecommunication infrastructure. These regions are often referred to as “white areas [11],” meaning zones with little or no communication coverage [12]”.
In the first paragraph of Section 3.1.2, the sentence “The reflection of the signal transmitted on the ground (“ground reflection”) [71] generates a division by 4 of the distance of the couple transmitter-receiver in the transmission of Hertzian information” should be replaced by “The reflection of the signal transmitted on the ground (“ground reflection”) [71] results in a received power decay proportional to 1/d4 with respect to the transmitter–receiver distance”.
The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.

Reference

  1. Ferrier, L.; Ibrahim, H.; Issa, M.; Ilinca, A. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073. [Google Scholar] [CrossRef]
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MDPI and ACS Style

Ferrier, L.; Ibrahim, H.; Issa, M.; Ilinca, A. Correction: Ferrier et al. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073. Sensors 2026, 26, 2941. https://doi.org/10.3390/s26102941

AMA Style

Ferrier L, Ibrahim H, Issa M, Ilinca A. Correction: Ferrier et al. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073. Sensors. 2026; 26(10):2941. https://doi.org/10.3390/s26102941

Chicago/Turabian Style

Ferrier, Laurent, Hussein Ibrahim, Mohamad Issa, and Adrian Ilinca. 2026. "Correction: Ferrier et al. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073" Sensors 26, no. 10: 2941. https://doi.org/10.3390/s26102941

APA Style

Ferrier, L., Ibrahim, H., Issa, M., & Ilinca, A. (2026). Correction: Ferrier et al. State of the Art of Telecommunication Systems in Isolated and Constrained Areas. Sensors 2021, 21, 3073. Sensors, 26(10), 2941. https://doi.org/10.3390/s26102941

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