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Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies

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Abstract
The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz. At a given frequency, the reverberation time is observed to be approximately constant for bandwidths up to 900 MHz (or larger). Moreover, the reverberation time decreases for increasing frequencies. Based on the theory of electromagnetic fields in cavities, a model to predict a room's quality factor, reverberation time value, and average absorption coefficient is developed for the first time. The validity and robustness of the model is investigated with data obtained for various environments, central frequencies, and bandwidths. As a validation, the model is applied to another room from 2 to 10 GHz and a maximum (resp. average) relative error of 22.30% (resp. 8.80%) was obtained with a rms error of 1.90 ns. Furthermore, good agreement is obtained with results reported in the literature with settings falling into the model range; scenarios for which relative errors smaller than 10% were computed. The results demonstrate that this approach is not only an accurate alternative to the reverberation time measurements and computations in indoor environments from 2 to 10 GHz, but also a viable route to link propagation mechanisms in indoor scenarios with reverberation chambers.
Keywords
ROOM ELECTROMAGNETICS, MODEL, SCATTERING, RADIO CHANNELS, Dense multipath components, modeling, power density, reverberation time, ultra-wideband

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Citation

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MLA
Bamba, Aliou, et al. “Experimental Investigation of Electromagnetic Reverberation Characteristics as a Function of UWB Frequencies.” IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol. 14, 2015, pp. 859–62, doi:10.1109/LAWP.2014.2382873.
APA
Bamba, A., Martinez-Ingles, M.-T., Gaillot, D. P., Tanghe, E., Hanssens, B., Molina-Garcia-Pardo, J.-M., … Joseph, W. (2015). Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 14, 859–862. https://doi.org/10.1109/LAWP.2014.2382873
Chicago author-date
Bamba, Aliou, Maria-Teresa Martinez-Ingles, Davy P. Gaillot, Emmeric Tanghe, Brecht Hanssens, Jose-Maria Molina-Garcia-Pardo, Martine Liénard, Luc Martens, and Wout Joseph. 2015. “Experimental Investigation of Electromagnetic Reverberation Characteristics as a Function of UWB Frequencies.” IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS 14: 859–62. https://doi.org/10.1109/LAWP.2014.2382873.
Chicago author-date (all authors)
Bamba, Aliou, Maria-Teresa Martinez-Ingles, Davy P. Gaillot, Emmeric Tanghe, Brecht Hanssens, Jose-Maria Molina-Garcia-Pardo, Martine Liénard, Luc Martens, and Wout Joseph. 2015. “Experimental Investigation of Electromagnetic Reverberation Characteristics as a Function of UWB Frequencies.” IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS 14: 859–862. doi:10.1109/LAWP.2014.2382873.
Vancouver
1.
Bamba A, Martinez-Ingles M-T, Gaillot DP, Tanghe E, Hanssens B, Molina-Garcia-Pardo J-M, et al. Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS. 2015;14:859–62.
IEEE
[1]
A. Bamba et al., “Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies,” IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol. 14, pp. 859–862, 2015.
@article{6972346,
  abstract     = {{The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz. At a given frequency, the reverberation time is observed to be approximately constant for bandwidths up to 900 MHz (or larger). Moreover, the reverberation time decreases for increasing frequencies. Based on the theory of electromagnetic fields in cavities, a model to predict a room's quality factor, reverberation time value, and average absorption coefficient is developed for the first time. The validity and robustness of the model is investigated with data obtained for various environments, central frequencies, and bandwidths. As a validation, the model is applied to another room from 2 to 10 GHz and a maximum (resp. average) relative error of 22.30% (resp. 8.80%) was obtained with a rms error of 1.90 ns. Furthermore, good agreement is obtained with results reported in the literature with settings falling into the model range; scenarios for which relative errors smaller than 10% were computed. The results demonstrate that this approach is not only an accurate alternative to the reverberation time measurements and computations in indoor environments from 2 to 10 GHz, but also a viable route to link propagation mechanisms in indoor scenarios with reverberation chambers.}},
  author       = {{Bamba, Aliou and Martinez-Ingles, Maria-Teresa and Gaillot, Davy P. and Tanghe, Emmeric and Hanssens, Brecht and Molina-Garcia-Pardo, Jose-Maria and Liénard, Martine and Martens, Luc and Joseph, Wout}},
  issn         = {{1536-1225}},
  journal      = {{IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS}},
  keywords     = {{ROOM ELECTROMAGNETICS,MODEL,SCATTERING,RADIO CHANNELS,Dense multipath components,modeling,power density,reverberation time,ultra-wideband}},
  language     = {{eng}},
  pages        = {{859--862}},
  title        = {{Experimental investigation of electromagnetic reverberation characteristics as a function of UWB frequencies}},
  url          = {{http://doi.org/10.1109/LAWP.2014.2382873}},
  volume       = {{14}},
  year         = {{2015}},
}

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