Estimation of the Human Absorption Cross Section Via Reverberation Models

Gerhard Steinböck, Troels Pedersen, Bernard Henri Fleury, Wei Wang, Ronald Raulefs

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Since the presence of persons affects the reverberation time observed for in-room channels, the absorption cross section of a person can be estimated from measurements via Sabine's and Eyring's models for the reverberation time. We propose an estimator relying on the more accurate model by Eyring and compare the obtained results to those of Sabine's model. We find that the absorption by persons is large enough to be measured with a wideband channel sounder and that estimates of the human absorption cross section differ for the two models. The obtained values are comparable to values reported in the literature. We also suggest the use of controlled environments with low average absorption coefficients to obtain more reliable estimates. The obtained values can be used to predict the change of reverberation time with persons in the propagation environment. This allows prediction of channel characteristics relevant in communication systems, e.g. path loss and rms delay spread, for various population densities.
Original languageEnglish
JournalI E E E Antennas and Wireless Propagation Letters
ISSN1536-1225
Publication statusSubmitted - 2019

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Reverberation
Communication systems
Acoustic waves

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Steinböck, G., Pedersen, T., Fleury, B. H., Wang, W., & Raulefs, R. (2019). Estimation of the Human Absorption Cross Section Via Reverberation Models. Manuscript submitted for publication.
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abstract = "Since the presence of persons affects the reverberation time observed for in-room channels, the absorption cross section of a person can be estimated from measurements via Sabine's and Eyring's models for the reverberation time. We propose an estimator relying on the more accurate model by Eyring and compare the obtained results to those of Sabine's model. We find that the absorption by persons is large enough to be measured with a wideband channel sounder and that estimates of the human absorption cross section differ for the two models. The obtained values are comparable to values reported in the literature. We also suggest the use of controlled environments with low average absorption coefficients to obtain more reliable estimates. The obtained values can be used to predict the change of reverberation time with persons in the propagation environment. This allows prediction of channel characteristics relevant in communication systems, e.g. path loss and rms delay spread, for various population densities.",
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Estimation of the Human Absorption Cross Section Via Reverberation Models. / Steinböck, Gerhard; Pedersen, Troels; Fleury, Bernard Henri; Wang, Wei; Raulefs, Ronald.

In: I E E E Antennas and Wireless Propagation Letters, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Estimation of the Human Absorption Cross Section Via Reverberation Models

AU - Steinböck, Gerhard

AU - Pedersen, Troels

AU - Fleury, Bernard Henri

AU - Wang, Wei

AU - Raulefs, Ronald

PY - 2019

Y1 - 2019

N2 - Since the presence of persons affects the reverberation time observed for in-room channels, the absorption cross section of a person can be estimated from measurements via Sabine's and Eyring's models for the reverberation time. We propose an estimator relying on the more accurate model by Eyring and compare the obtained results to those of Sabine's model. We find that the absorption by persons is large enough to be measured with a wideband channel sounder and that estimates of the human absorption cross section differ for the two models. The obtained values are comparable to values reported in the literature. We also suggest the use of controlled environments with low average absorption coefficients to obtain more reliable estimates. The obtained values can be used to predict the change of reverberation time with persons in the propagation environment. This allows prediction of channel characteristics relevant in communication systems, e.g. path loss and rms delay spread, for various population densities.

AB - Since the presence of persons affects the reverberation time observed for in-room channels, the absorption cross section of a person can be estimated from measurements via Sabine's and Eyring's models for the reverberation time. We propose an estimator relying on the more accurate model by Eyring and compare the obtained results to those of Sabine's model. We find that the absorption by persons is large enough to be measured with a wideband channel sounder and that estimates of the human absorption cross section differ for the two models. The obtained values are comparable to values reported in the literature. We also suggest the use of controlled environments with low average absorption coefficients to obtain more reliable estimates. The obtained values can be used to predict the change of reverberation time with persons in the propagation environment. This allows prediction of channel characteristics relevant in communication systems, e.g. path loss and rms delay spread, for various population densities.

M3 - Journal article

JO - I E E E Antennas and Wireless Propagation Letters

JF - I E E E Antennas and Wireless Propagation Letters

SN - 1536-1225

ER -