A Bidirectional Ray-Tracing Method for Antenna Coupling Evaluation Based on the Reciprocity Theorem

Taygur, Mehmet Mert; Sukharevsky, Ilya O.; Eibert, Thomas F.

doi:10.1109/tap.2018.2876680

Cited by 14 publications

(6 citation statements)

References 26 publications

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“…Thus, the growth of the ray-tree can be repressed and the computation time might be reduced since a smaller number of rays would be involved in the simulation, as already stated. Previous studies have shown that the bidirectional ray-tracing method can give good results with a number of the rays 10 times smaller than required in a unidirectional ray-tracing simulation (only single diffractions were considered) [8]. It is possible to observe a similar reduction in the number of rays, even in scenarios without diffractions (e.g., 2-ray ground reflection model), although with less dramatic differences [7].…”

Section: Bidirectional Ray-tracing Simulationmentioning

confidence: 92%

“…However, the contributions near the stationary phase points or critical points of second kind are usually more prominent compared to the rest of the integration domain [11]. Thus, an open surface, which is located between the transmitter and receiver antennas, can be utilized to simulate the diffraction effects, as demonstrated in [8].…”

Section: Evaluation Of the Reciprocity Integralmentioning

confidence: 99%

“…1. In [8], it was shown that the bidirectional ray-tracing is computationally more efficient than the traditional unidirectional ray-tracing, and also as accurate. The bidirectional ray-tracing can usually match the accuracy of unidirectional ray-tracing with a smaller number of ray launches, even though both antennas are utilized for ray launching.…”

Section: Bidirectional Ray-tracing Simulationmentioning

confidence: 99%

“…In this study, the performance of an urban massive MIMO network, where rooftop propagation is dominant, is investigated by means of a bidirectional ray-tracing algorithm [7,8]. Ray launching is performed from both transmitter and receiver sites and the rays are captured on an interaction surface.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of Massive Mimo Scenarios Involving Rooftop Propagation by Bidirectional Ray-Tracing

Taygur¹,

Sukharevsky²,

Eibert³

2019

PIER C

Self Cite

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The average downlink data-rate in massive Multiple Input Multiple Output (MIMO) networks within realistic urban environments is characterized by means of ray-tracing simulations. The links between the receivers and transmitters are mostly established through rooftop propagation, which requires special treatment due to multiple diffractions near the optical boundaries. The bidirectional ray-tracing method is utilized in order to simulate these effects accurately. The average downlink data-rate is also calculated according to an empirical rooftop propagation model and the differences as well as the similarities with the bidirectional ray-tracing results are demonstrated. Additionally, an iterative Shooting and Bouncing Rays (SBR) algorithm, which improves the computational efficiency of the bidirectional ray-tracing, is introduced. The algorithm aims to maximize the number of rays, which contribute to the result, by setting specific launch directions. The results show that noticeable improvements in the computation time are possible.

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Section: Bidirectional Ray-tracing Simulationmentioning

confidence: 92%

Section: Evaluation Of the Reciprocity Integralmentioning

confidence: 99%

Section: Bidirectional Ray-tracing Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Massive Mimo Scenarios Involving Rooftop Propagation by Bidirectional Ray-Tracing

Taygur¹,

Sukharevsky²,

Eibert³

2019

PIER C

Self Cite

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show abstract

“…The two aforementioned challenges can be partially resolved by the reciprocity theorem based bidirectional ray tracing method proposed in [7]. In this approach, a large interaction surface is introduced between the sources and the targets, rays are launched from both sides and collected on the surface and then the transfer function from each source to each target can be obtained by evaluating a reciprocity integration over the surface.…”

Section: Introductionmentioning

confidence: 99%

A Multiple Huygens Surface Based Ray Tracing Framework with GPU Acceleration

Han¹,

Taygur²,

Eibert³

2023

Preprint

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<p>A ray tracing framework based on the utilization of multiple Huygens surfaces is introduced and evaluated. As such, complex propagation environments are divided into smaller subdomains, thereby restricting rays to traverse within a smaller, simpler space. The subdomains are surrounded by the Huygens surfaces and equivalent Huygens sources interconnect the ray based field representations in neighboring subdomains. Compared to conventional shooting and bouncing rays (SBR) based ray tracing simulations, which rely on reception spheres to identify ray hits, this approach reduces the errors caused by ray misses, because Huygens surfaces can have larger sizes than reception spheres, and rays need to travel shorter distances within each subdomain. Related to diffraction computations, which rely conventionally on the uniform theory of diffraction (UTD), the flexibility of choosing Huygens surfaces allows to separate diffraction edges into different subdomains, thus, eliminating the need for consecutive UTD evaluations and the corresponding exponential increase in the number of diffracted rays. Together with smart ray launching strategies and quickly converging integration methods, the presented approach allows to evaluate more than 10 successive diffractions with reasonable accuracy. The implementation is based on graphics processing units (GPUs), which enable massively parallelized simulations.</p>

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A novel method of medium effect for loading incident wave in hybrid ray-tracing/FDTD algorithm

Yuan

Liu

et al. 2022

Electromagnetics

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A Bidirectional Ray-Tracing Method for Antenna Coupling Evaluation Based on the Reciprocity Theorem

Cited by 14 publications

References 26 publications

Investigation of Massive Mimo Scenarios Involving Rooftop Propagation by Bidirectional Ray-Tracing

Investigation of Massive Mimo Scenarios Involving Rooftop Propagation by Bidirectional Ray-Tracing

A Multiple Huygens Surface Based Ray Tracing Framework with GPU Acceleration

A novel method of medium effect for loading incident wave in hybrid ray-tracing/FDTD algorithm

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