Parallel radio-wave propagation modeling with image-based ray tracing techniques

Athanaileas, Theodoros; Athanasiadou, G.E.; Tsoulos, George V.; Kaklamani, Dimitra I.

doi:10.1016/j.parco.2010.08.002

Cited by 17 publications

(7 citation statements)

References 18 publications

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“…The formation of the tree of the trace occurs at several sublevels according to the structures A and Б itself -largescale and small-scale. The technique of tracing the rays used is similar [19][20].…”

Section: Link Model Of the Troposcatter Communicationmentioning

confidence: 99%

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

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Background. At present, the demand in tropospheric over-the-horizon communication systems determines the inherent advantages of these systems over satellite and radio-relay systems of direct visibility, especially in combat and emergency situations. Although the fundamentals of the theory of tropospheric scattering were developed as early as the middle of the last century, the development of over-the-horizon systems requires constant refinements of known theoretical positions in accordance with new data on the nature of tropospheric scattering, atmospheric inhomogeneities, capabilities of new methods for calculating and estimating radio propagation. Objective. The aim of the work is to develop a radio link model of a trans-horizon tropospheric communication to study the possibility of controlling (improving) attenuation on such a route by changing the electrophysical characteristics of the environment, in particular atmospheric turbulence, or using artificial formations in the atmosphere. Methods. The created model is based on the Ray-tracing method. Results. A model of radio link losses in the over-horizon tropospheric communication (long-range tropospheric propagation) was developed, based on the ray-tracing technique in two versions: simplified, with homogeneous layers, and full, with a combination of blocks of structures of scattering spheres in each of the layers. A study of the possibility of improving attenuation along the tropospheric scattering pathway by regulating changes in the electrophysical parameters of inhomogeneities and artificial formations in the atmosphere was conducted. Conclusions. The convergence of the results of the simulation with the data obtained by known / traditional analytical models for calculating the losses on the tropospheric scattering path confirms the adequacy of the proposed model to the statistical data of the real losses in tropospheric scattering. The obtained results indicate that, for practical purposes, the accuracy of calculations of the loss characteristics is sufficient and that they can be used to form a tropospheric dispersion route with significantly reduced loss values by artificially adding a certain liquid or solid substance to the atmospheric heterogeneity.

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Section: Link Model Of the Troposcatter Communicationmentioning

confidence: 99%

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

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“…If the electric field intensity vector is vertical to incidence plane (vertical polarization), the reflection factor of uniform plane wave in [10] is…”

Section: Particlementioning

confidence: 99%

“…In the far-reaching electromagnetic field, the electric field vector and magnetic field vector can be expressed approximately in [10] as follows:…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

“…Some methods and models are proposed for calculation of indoor and outdoor wave propagation, that is, methods based on the numerical solution of Maxwell's equations such as finite-difference time-domain method (FDTD) [1] and parabolic equation method (PE) [2][3][4][5][6], methods based on geometrical optics principle such as ray-tracing (RT) [7][8][9][10] method, and so forth.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Computation and Visualization of Transmission Particle Model and Its Simulation Based on GPU

Zhang

2014

Mathematical Problems in Engineering

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Electromagnetic calculation plays an important role in both military and civic fields. Some methods and models proposed for calculation of electromagnetic wave propagation in a large range bring heavy burden in CPU computation and also require huge amount of memory. Using the GPU to accelerate computation and visualization can reduce the computational burden on the CPU. Based on forward ray-tracing method, a transmission particle model (TPM) for calculating electromagnetic field is presented to combine the particle method. The movement of a particle obeys the principle of the propagation of electromagnetic wave, and then the particle distribution density in space reflects the electromagnetic distribution status. The algorithm with particle transmission, movement, reflection, and diffraction is described in detail. Since the particles in TPM are completely independent, it is very suitable for the parallel computing based on GPU. Deduction verification of TPM with the electric dipole antenna as the transmission source is conducted to prove that the particle movement itself represents the variation of electromagnetic field intensity caused by diffusion. Finally, the simulation comparisons are made against the forward and backward ray-tracing methods. The simulation results verified the effectiveness of the proposed method.

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“…Loading and processing the building, foliage, and ter rain databases Due to the increased computational demands of these models, solutions based on high-performance computing techniques (e.g., parallel processing) have also been developed, as discussed in [31].…”

mentioning

confidence: 99%

Performance Analysis of Fractional Frequency Reuse for Multi-Cell WiMAX Networks Based on Site-Specific Propagation Modeling [Wireless Corner]

Stiakogiannakis¹,

Athanasiadou

Tsoulos

et al. 2012

IEEE Antennas Propag. Mag.

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This work examines the technique of fractional frequency reuse for the downlink of multi-cellular WiMAX networks. Different frequency-reuse deployment scenarios are presented. Three schemes for the reuse zone selection are evaluated, namely, the distance-based and SINR-based approaches, as well as a new scheme, which is based on load-balancing between different reuse zones. The proposed load-balancing scheme overcomes the main weakness of the SINR-based approach, which is its inability to effi ciently manage the available resources of both reuse zones as their size varies. The evaluation of the different schemes is based on simulations that employ a ray-tracing propagation model, thus estimating the propagation phenomena as closely to reality as possible. The simulation results demonstrated clearly better performance of the proposed algorithm compared to the distance-based and SINR-based approaches. It is shown that the use of fractional frequency reuse with the proposed load-balancing approach improves the performance of WiMAX networks in terms of a variety of metrics, such as blocking ratio and offered bit rate. , with the School of ECE, NTUA. She has more than 260 publications in the fi elds of software development for informationtransmission systems modeling, microwave net works, mobile and satellite communications, and has coordi nated the NTUA activities in the framework of several EU and national projects in the same areas. She is editor of one inter national book by Springer-Verlag (2000) in applied CEM, and a reviewer for several IEEE journals.

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Parallel radio-wave propagation modeling with image-based ray tracing techniques

Cited by 17 publications

References 18 publications

Troposcatter Communication Link Model Based on Ray-Tracing

Troposcatter Communication Link Model Based on Ray-Tracing

Electromagnetic Computation and Visualization of Transmission Particle Model and Its Simulation Based on GPU

Performance Analysis of Fractional Frequency Reuse for Multi-Cell WiMAX Networks Based on Site-Specific Propagation Modeling [Wireless Corner]

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