FDTD Modeling of Indoor Propagation with Frequency Averaging

Stanislav Stefanov Zhekov*, Ondrej Franek, Gert Frølund Pedersen

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

The presence of numerical dispersion and anisotropy in the finite-difference time-domain (FDTD) method leads to an error in the phase of the numerical waves which in turn degrades the accuracy of the simulated electric field (E-field). In this paper, the error in the mean magnitude of the numerical E-field obtained by averaging over frequency is investigated. The central frequency, at which the study is performed, is 3 GHz and different averaging bandwidths are tested to check the accuracy of representing the large-scale fading. By comparing with measurements, it is found that before averaging the maximum error in the numerical results is of 64% for empty room and 57% for office scenario. However, the maximum error in the mean magnitude of the FDTD E-field, when averaging over bandwidth of 200 MHz is employed, is of 36% and 45% for empty room and office scenario, respectively.
Original languageEnglish
Title of host publication2019 13th European Conference on Antennas and Propagation (EuCAP)
Number of pages5
PublisherIEEE
Publication dateMar 2019
Article number8739928
ISBN (Print)978-1-5386-8127-5
ISBN (Electronic)978-88-907018-8-7
Publication statusPublished - Mar 2019
EventThe 13th European Conference on Antennas and Propagation - Krakow, Krakow, Poland
Duration: 31 Mar 20195 Apr 2019
https://www.eucap2019.org/

Conference

ConferenceThe 13th European Conference on Antennas and Propagation
LocationKrakow
Country/TerritoryPoland
CityKrakow
Period31/03/201905/04/2019
Internet address

Keywords

  • Finite-difference time-domain (FDTD)
  • frequency averaging
  • indoor propagation
  • numerical phase error

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