A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers

A. Hubrechsen; Vincent T. Neylon; Kate A. Remley; Robert D. Jones; Robert D. Horansky; L.A. (Sander) Bronckers

doi:10.23919/EuMC48046.2021.9338218

A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers

A. Hubrechsen, Vincent T. Neylon, Kate A. Remley, Robert D. Jones, Robert D. Horansky, L.A. (Sander) Bronckers

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

70 Downloads (Pure)

Abstract

New protocols related to internet-of-things applications may introduce previously unnoticed measurement effects due to the narrowband nature of these protocols. Such technologies also require less loading to meet the coherence bandwidth conditions, which may lead to higher variations accross the channel. This can cause a need to take additional components into account in the assessment of uncertainty. In this work, we present a preliminary study on uncertainties of NB-IoT measurements in reverberation chambers. We show a need to account for both the number of mode-stirring samples and the lack of spatial uniformity in the uncertainty analysis, where the latter generally dominates for wireless testing. We provide preliminary results for the uncertainty including both effects. We introduce a hypothesis for the effects of loading on the uncertainty, introducing that there may be an optimal loading point to minimize uncertainty, where we describe that this decision may not depend only on coherence bandwidth, but also on the number of significant modes.

Original language	English
Title of host publication	2020 50th European Microwave Conference, EuMC 2020
Publisher	Institute of Electrical and Electronics Engineers
Pages	1051-1054
Number of pages	4
ISBN (Electronic)	978-2-87487-059-0
DOIs	https://doi.org/10.23919/EuMC48046.2021.9338218
Publication status	Published - 2 Feb 2021
Event	50th European Microwave Conference (EuMC 2020) - Utrecht, Netherlands, Utrecht, Netherlands Duration: 12 Jan 2021 → 14 Jan 2021 Conference number: 50

Conference

Conference	50th European Microwave Conference (EuMC 2020)
Abbreviated title	EuMC 2020
Country/Territory	Netherlands
City	Utrecht
Period	12/01/21 → 14/01/21
Other	Held as Part of the European Microwave Week, EuMW 2020 10-15 January, 2021 Utrecht

Keywords

CAT-M1
Cellular Telecommunications
Chamber transfer function
Internet of Things
Mode distribution
NB-IoT
Reverberation chamber
Uncertainty
Wireless System

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10.23919/EuMC48046.2021.9338218

V20200824_NBIoTFinal author version , 465 KB

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Hubrechsen, A., Neylon, V. T., Remley, K. A., Jones, R. D., Horansky, R. D., & Bronckers, L. A. (2021). A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers. In 2020 50th European Microwave Conference, EuMC 2020 (pp. 1051-1054). Article 9338218 Institute of Electrical and Electronics Engineers. https://doi.org/10.23919/EuMC48046.2021.9338218

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title = "A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers",

abstract = "New protocols related to internet-of-things applications may introduce previously unnoticed measurement effects due to the narrowband nature of these protocols. Such technologies also require less loading to meet the coherence bandwidth conditions, which may lead to higher variations accross the channel. This can cause a need to take additional components into account in the assessment of uncertainty. In this work, we present a preliminary study on uncertainties of NB-IoT measurements in reverberation chambers. We show a need to account for both the number of mode-stirring samples and the lack of spatial uniformity in the uncertainty analysis, where the latter generally dominates for wireless testing. We provide preliminary results for the uncertainty including both effects. We introduce a hypothesis for the effects of loading on the uncertainty, introducing that there may be an optimal loading point to minimize uncertainty, where we describe that this decision may not depend only on coherence bandwidth, but also on the number of significant modes.",

keywords = "CAT-M1, Cellular Telecommunications, Chamber transfer function, Internet of Things, Mode distribution, NB-IoT, Reverberation chamber, Uncertainty, Wireless System",

author = "A. Hubrechsen and Neylon, {Vincent T.} and Remley, {Kate A.} and Jones, {Robert D.} and Horansky, {Robert D.} and Bronckers, {L.A. (Sander)}",

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Hubrechsen, A, Neylon, VT, Remley, KA, Jones, RD, Horansky, RD & Bronckers, LA 2021, A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers. in 2020 50th European Microwave Conference, EuMC 2020., 9338218, Institute of Electrical and Electronics Engineers, pp. 1051-1054, 50th European Microwave Conference (EuMC 2020), Utrecht, Netherlands, 12/01/21. https://doi.org/10.23919/EuMC48046.2021.9338218

A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers. / Hubrechsen, A.; Neylon, Vincent T.; Remley, Kate A. et al.
2020 50th European Microwave Conference, EuMC 2020. Institute of Electrical and Electronics Engineers, 2021. p. 1051-1054 9338218.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers

AU - Hubrechsen, A.

AU - Neylon, Vincent T.

AU - Remley, Kate A.

AU - Jones, Robert D.

AU - Horansky, Robert D.

AU - Bronckers, L.A. (Sander)

N1 - Conference code: 50

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N2 - New protocols related to internet-of-things applications may introduce previously unnoticed measurement effects due to the narrowband nature of these protocols. Such technologies also require less loading to meet the coherence bandwidth conditions, which may lead to higher variations accross the channel. This can cause a need to take additional components into account in the assessment of uncertainty. In this work, we present a preliminary study on uncertainties of NB-IoT measurements in reverberation chambers. We show a need to account for both the number of mode-stirring samples and the lack of spatial uniformity in the uncertainty analysis, where the latter generally dominates for wireless testing. We provide preliminary results for the uncertainty including both effects. We introduce a hypothesis for the effects of loading on the uncertainty, introducing that there may be an optimal loading point to minimize uncertainty, where we describe that this decision may not depend only on coherence bandwidth, but also on the number of significant modes.

AB - New protocols related to internet-of-things applications may introduce previously unnoticed measurement effects due to the narrowband nature of these protocols. Such technologies also require less loading to meet the coherence bandwidth conditions, which may lead to higher variations accross the channel. This can cause a need to take additional components into account in the assessment of uncertainty. In this work, we present a preliminary study on uncertainties of NB-IoT measurements in reverberation chambers. We show a need to account for both the number of mode-stirring samples and the lack of spatial uniformity in the uncertainty analysis, where the latter generally dominates for wireless testing. We provide preliminary results for the uncertainty including both effects. We introduce a hypothesis for the effects of loading on the uncertainty, introducing that there may be an optimal loading point to minimize uncertainty, where we describe that this decision may not depend only on coherence bandwidth, but also on the number of significant modes.

KW - CAT-M1

KW - Cellular Telecommunications

KW - Chamber transfer function

KW - Internet of Things

KW - Mode distribution

KW - NB-IoT

KW - Reverberation chamber

KW - Uncertainty

KW - Wireless System

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M3 - Conference contribution

SP - 1051

EP - 1054

BT - 2020 50th European Microwave Conference, EuMC 2020

PB - Institute of Electrical and Electronics Engineers

T2 - 50th European Microwave Conference (EuMC 2020)

Y2 - 12 January 2021 through 14 January 2021

ER -

A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers

Abstract

Conference

Keywords

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Reverberation Chamber Metrology for Wireless Internet of Things Devices: Flexibility in Form Factor, Rigor in Test

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