Applicability of Game Engine for Ray Tracing Techniques in a Complex Urban Environment

Cadavid, Andrés Navarro; Ibarra, Dinael Guevara

doi:10.1109/vetecf.2010.5594343

Cited by 12 publications

(9 citation statements)

References 23 publications

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“…The propagation model used in this study is a ray-tracing model that predicts 3D contributions for urban environments using an open source game engine and GPU (Graphics Processing Unit) [6]. The idea is to verify the model proposed in different ambient and frequencies, validating the well known theory that ray tracing models work well for different frequencies.…”

Section: Introductionmentioning

confidence: 97%

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DVB Coverage Prediction Using Game Engine Based Ray-Tracing Techniques

Cadavid

Ibarra

Cardona

et al. 2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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This paper presents the results of an evaluation of a propagation model based on ray-tracing techniques using a game engine and Graphics Processing Unit (GPU) in outdoor scenarios, as a gap-filler for a Digital Video Broadcasting Handheld (DVB-H) service. This model involves complete identification of the parameters of wave propagation, multipath components between the transmitter and the receiver as attenuation, time delay of arrival (TDA), full polarimetric transmission matrix, direction of arrival DoA and the direction of departure DoD. In the paper, we present the results of the simulation and compare them with measurements, obtaining a satisfactory fit.Index Terms-game engine, ray tracing, digital video broadcasting, wave propagation.

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Section: Introductionmentioning

confidence: 97%

“…The idea is to verify the model proposed in different ambient and frequencies, validating the well known theory that ray tracing models work well for different frequencies. Also, we are testing our model in a quite bigger scenario than the reported in [6], reducing the processing time.…”

Section: Introductionmentioning

confidence: 99%

DVB Coverage Prediction Using Game Engine Based Ray-Tracing Techniques

Cadavid

Ibarra

Cardona

et al. 2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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“…The transmitter antenna produced a signal at 900 MHz and was located on the top of a building at 16 m above it (see blue object in Figure 12). The receiver system consisted of a low-profile mobile and vertically polarized antenna mounted on the test car, and the receiver antenna was positioned above the center of the vehicle roof at 2.1 m above the ground; 258 measurement points were collected [16]. [10].…”

Section: Cali Colombiamentioning

confidence: 99%

Analysis of Heuristic Uniform Theory of Diffraction Coefficients for Electromagnetic Scattering Prediction

Tami

Rego

Ibarra

et al. 2018

International Journal of Antennas and Propagation

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We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban scenarios and canonical examples of diffraction by lossy conducting wedges using the three sets of heuristic coefficients and the Malyuzhinets solution as reference model. We compare not only the results of the canonical models but also their implementation in real outdoor scenarios. To predict the coverage of mobile networks, we used propagation models for outdoor environments by using a 3D ray-tracing model based on a brute-force algorithm for ray launching and a propagation model based on image theory. To evaluate each set of coefficients, we analyzed the mean and standard deviation of the absolute error between estimates and measured data in Ottawa, Canada; Valencia, Spain; and Cali, Colombia. Finally, we discuss the path loss prediction for each set of heuristic UTD coefficients in outdoor environment, as well as the comparison with the canonical results.

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“…The simulated and analyzed scenario was an urban microcell in the downtown of Cali, Colombia [4]. Figure 1 shows the 3D urban model; we used the Cost2100 Cali Realistic Scenario with 1m resolution.…”

Section: B Outdoor Scenariomentioning

confidence: 99%

“…Guevara et al [3] used a physical technique that model the edge where diffraction occurs to obey reciprocity and adopt two types of permittivity to characterize the building materials. This paper will present the implementation of these three heuristic UTD coefficientsin a 3D ray-tracing model in order to evaluate the precision of the model with respect to measurements in a realistic scenario that has been previously validated in [4].…”

Section: Introductionmentioning

confidence: 99%

Heuristic UTD coefficients applied for the channel characterization in an andean scenario

Tami

Rego

Moreira

et al. 2015

2015 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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This paper presents a comparison of three heuristic coefficients for the Uniform Theory of Diffraction (UTD), used to characterize the radiowave scattering in typical urban scenarios. The coefficients were implemented in a propagation model based on 3D ray-tracing techniques in an andean scenario. In order to evaluate each coefficient we analyze the statistical behavior of the mean and standard deviation of the absolute errors between the estimated values and the measured data of path loss in a large number of receptor points. Finally, we show the path loss prediction for each heuristic UTD coefficients proposed.

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Applicability of Game Engine for Ray Tracing Techniques in a Complex Urban Environment

Cited by 12 publications

References 23 publications

DVB Coverage Prediction Using Game Engine Based Ray-Tracing Techniques

DVB Coverage Prediction Using Game Engine Based Ray-Tracing Techniques

Analysis of Heuristic Uniform Theory of Diffraction Coefficients for Electromagnetic Scattering Prediction

Heuristic UTD coefficients applied for the channel characterization in an andean scenario

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