Optimization of building material properties for accurate indoor ray tracing models

Beneat, Jacques N.; Bailey, Neil Phillips

doi:10.1109/milcom.2004.1494980

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…This technique sets a threshold value to decrease the computational time and reduce the usage of the memory resources. Three-dimensional ray-tracing algorithm has been proposed in [4] to reduce the computational time by using the utilizing the electromagnetic engine at the expense of the geometric engine. Similar technique has been proposed in [5] but with an offline electromagnetic field calculation.…”

Section: Introductionmentioning

confidence: 99%

Validation of Three-Dimensional Ray-Tracing Algorithm for Indoor Wireless Propagations

Salem

Ismail

Misran

2011

ISRN Communications and Networking

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A 3D ray tracing simulator has been developed for indoor wireless networks. The simulator uses geometrical optics (GOs) to propagate the electromagnetic waves inside the buildings. The prediction technique takes into account multiple reflections and transmissions of the propagated waves. An interpolation prediction method (IPM) has been proposed to predict the propagated signal and to make the ray-tracing algorithm faster, accurate, and simple. The measurements have been achieved by using a single Wi-Fi network access point as a transmitter and a laptop as a receiver. Measured data had been collected at different positions in indoor environment and compared with predicted signals. The comparison of the predicted and measured received signals gave root mean square error of 2.96 dB and std. deviation of 2.98 dB.

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Section: Introductionmentioning

confidence: 99%

Validation of Three-Dimensional Ray-Tracing Algorithm for Indoor Wireless Propagations

Salem

Ismail

Misran

2011

ISRN Communications and Networking

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“…From these results, it is clear that the proposed model can precisely reproduce the power distribution in both scenarios, even with very general wall properties being used. These wall properties can be further optimised using techniques in [29], [30] to improve accuracy.…”

Section: Results Analysismentioning

confidence: 99%

A 3D Ray-tracing Model for UHF RFID

Chen

Yang

Liu

et al. 2020

2020 IEEE International Conference on RFID (RFID)

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In this work, a 3-dimensional (3D) ray-tracing model is proposed. The model is specifically tailored for RFID applications by taking into account some of its unique characteristics. The proposed model can give accurate power predictions and is suitable for indoor RFID systems operating with low fade margins. The model has been verified by comparison with Method of Moments (MoM) and practical measurements. It is shown to achieve a high accuracy with significantly less computational complexity than MoM. An example application of the model is presented comparing the performance of two antennas with similar beam patterns but different axial ratio. The predicted tag detection rates (63% and 50%) are in good agreement with the experimental data (65% and 55%), showing the accuracy of the model and its improvement over previous models which are not able to handle axial ratio as accurately.

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“…There are very few publications addressing the deterministic modeling calibration issue. In [10], measurements with 200 MHz bandwidth centered at 1 GHz have been conducted and a separate tuning of the dielectric permittivity of each building wall has been performed, without considering the loss tangent. The authors presented a comparison between their model and the measurements for path loss parameters.…”

Section: Towards Improving the Modeling Accuracymentioning

confidence: 99%

Calibration of a UWB Sub-Band Channel Model Using Simulated Annealing

Jemai

Eggers²,

Pedersen³

et al. 2009

IEEE Trans. Antennas Propagat.

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This communication presents a calibration method of an indoor UWB sub-band deterministic channel model by means of simulated annealing. Based on the characterization of the channel at sub-bands with a subset of measurement locations, the calibration optimizes the dielectric material parameters of the environment, which improves the accuracy of the model in terms of path loss () and time dispersion parameters (root mean square delay spread and maximum excess delay) at all test locations within the test area. The performance of the calibration has been assessed by two indoor measurement campaigns, including line of sight (LOS) office and corridor and non line of sight (NLOS) corridor-office at the Antenna, Propagation and Networking Section building at Aalborg University and at the building of the Institut für Nachrichtentechnik at Braunschweig Technical University. A reasonable performance of the calibration is noticed in improving the model accuracy within the building, requiring a few pilot measurements. Index Terms-Channel impulse response (CIR), material parameters, simulated annealing, sub-band divided ray tracing, UWB.

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Optimization of building material properties for accurate indoor ray tracing models

Cited by 4 publications

References 4 publications

Validation of Three-Dimensional Ray-Tracing Algorithm for Indoor Wireless Propagations

Validation of Three-Dimensional Ray-Tracing Algorithm for Indoor Wireless Propagations

A 3D Ray-tracing Model for UHF RFID

Calibration of a UWB Sub-Band Channel Model Using Simulated Annealing

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