Exhaustive ray tracing algorithm for microcellularpropagation prediction models

Sánchez, Manuel García; Haro, L. de; Pino, A.G.; Calvo, Miguel Bosch

doi:10.1049/el:19960453

Cited by 25 publications

(9 citation statements)

References 4 publications

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“…In [6], the authors used "test ray" to find the scatters generating images, but their test rays are based on the brute force ray-tracing method, which provides no guarantee of including all possible propagation paths. As another ray tracing method, a "visibility tree" (VT) concept was reported [7]. The VT method can be used for any propagation environment, However, the method requires redundant computation time excessively to examine whether the selected path processes on VT are real or not by testing if the scattering points satisfying Fermat's principle are located on the corresponding scatters or not.…”

Section: Introductionmentioning

confidence: 99%

A fast ray-tracing algorithm for microcellular propagation prediction models

2012

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An idea of virtual source and multiway tree is introduced to present a new and very fast ray-tracing method, which is based on uniform geometrical theory of diffraction (UTD) and can solve some of the problems that other ray-tracing methods have. It is developed for quasi three-dimensional (3-D) environments and can be applied to any complex propagation environment composed of arbitrary-shaped buildings and streets. The useless node is released timely because constructing multiway tree and finding propagation path is synchronized. It is fundamentally a point-to-point tracing method, so reception tests are not required and it guarantees high accuracy.

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Section: Introductionmentioning

confidence: 99%

A fast ray-tracing algorithm for microcellular propagation prediction models

2012

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“…To determine the propagating rays, the algorithm recursively sets up a so called "visibility tree," which is a virtual layered structure representing the potential visibility relationships among transmitter, receiver, and interacting objects (i.e., walls and wedges) inside the scenario. In particular, objects are stored within the tree by means of proper "virtual transmitters" (VTx) that behave as secondary virtual sources [13,14]. VTx locations related to wall-objects also depend on the electromagnetic interaction (reflection/transmission) experienced by the wall.…”

Section: The 3d Model's Basics a 3d Rt Model Developed At Thementioning

confidence: 99%

Ray Tracing RF Field Prediction: An Unforgiving Validation

Vitucci

Degli-Esposti

Fuschini

et al. 2015

International Journal of Antennas and Propagation

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The prediction of RF coverage in urban environments is now commonly considered a solved problem with tens of models proposed in the literature showing good performance against measurements. Among these, ray tracing is regarded as one of the most accurate ones available. In the present work, however, we show that a great deal of work is still needed to make ray tracing really unleash its potential in practical use. A very extensive validation of a state-of-the-art 3D ray tracing model is carried out through comparison with measurements in one of the most challenging environments: the city of San Francisco. Although the comparison is based on RF cellular coverage at 850 and 1900 MHz, a widely studied territory, very relevant sources of error and inaccuracy are identified in several cases along with possible solutions.

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“…With the micro-cell and pico-cell system starting to be used, the traditional statistical methods have failed. Method of Moment [1], Ray Tracing [2] [3] and Finite Difference Time-Domain [4] have become an effective method of researching the propagation characteristics for microcell environment. As wireless LAN and mobile communications network are widely used in the indoor environment, the research of the propagation characteristics of indoor environment is becoming increasingly important in order to provide the service of economical and reliable indoor wireless communications.…”

Section: Introductionmentioning

confidence: 99%

Study on the Propagation Characteristics of Radio Wave for Indoor Non-Line-of-Sight

Chen¹,

Liu²,

Wang³

2015

JCC

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The propagation characteristics of radio wave have been an important topic in wireless communications. Based on the ray tracing method, the propagation of radio wave for indoor NLOS environment is simulated and analyzed. In this paper, the received power is obtained by simulation, and we will analyze the impact of various factors on the received power. Later, the study can be used to simplify indoor radio wave propagation model and provide a theoretical basis, which is in favor of indoor wireless communication network planning and optimization and can lay the foundation of the development of future technology.

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Exhaustive ray tracing algorithm for microcellularpropagation prediction models

Cited by 25 publications

References 4 publications

A fast ray-tracing algorithm for microcellular propagation prediction models

A fast ray-tracing algorithm for microcellular propagation prediction models

Ray Tracing RF Field Prediction: An Unforgiving Validation

Study on the Propagation Characteristics of Radio Wave for Indoor Non-Line-of-Sight

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