A beam launching method for propagation modeling in multipath contexts

Tahri, R.; Letrou, Christine; Hanna, Victor Fouad

doi:10.1002/mop.10501

Cited by 9 publications

(11 citation statements)

References 10 publications

(10 reference statements)

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“…Again using paraxial approximations, as was done in [10], the reflected and transmitted fields can easily be expressed in the form of Gaussian beams, respectively denoted B r and B t . Using the "complex ray" formalism introduced in Eq.…”

Section: Gaussian Beam Transmission and Reflectionmentioning

confidence: 99%

“…It has already been considered as an efficient alternative to ray-based methods for problems involving propagation in multi-reflecting environments. Its accuracy and efficiency have been demonstrated, for instance, to analyze the electromagnetic scattering by open-ended waveguide cavities [9], or to simulate the propagation along metallic waveguides [10]. Beam techniques yield uniform representations of fields, with no problems at or near caustics.…”

Section: Introductionmentioning

confidence: 99%

“…In the process of tracking beams through successive interactions, reflection and transmission operators are evaluated only along the beam axes. The collective treatment of observation points is inherently performed; no post treatment (reception sphere) is needed [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gaussian beam launching for 3D physical modeling of propagation channels

Fluerasu

Letrou

2009

Ann. Telecommun.

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International audienceGaussian beam launching is proposed as an alternative to ray-based techniques for propagation channel modeling, and it is implemented and validated in the context of indoor propagation. A rigorous Gabor frame decomposition of source fields is used to represent a radiated field as a superposition of shifted and rotated Gaussian beams, conveniently expressed as complex rays. Beam tracking through multiple reflections and transmissions is straightforward, and fields can then be evaluated by summation of closed form expressions. The parameters of a given transformed Gaussian beam have to be calculated only once for all observation points, leading to easy implementation, and computationally efficient algorithms. Simulations of amplitude-delay profiles, mean excess delay, and RMS delay spread are performed in an indoor environment at 60 GHz and compared to measured and published result

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Section: Gaussian Beam Transmission and Reflectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gaussian beam launching for 3D physical modeling of propagation channels

Fluerasu

Letrou

2009

Ann. Telecommun.

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“…Only beams which are significantly excited (frame coefficients with values higher than a given threeshold) need to be tracked. Reflected beams are viewed as beams originating in "image" source distributions [2] and "diffracted" or "re-expansion" beams have their source distribution located in the vicinity of diffracting obstacles. In the latter case, not only the beam source position and size are modified, but also its width as is the case also with curved interfaces.…”

Section: Beam Axis Trackingmentioning

confidence: 99%

A Gaussian beam shooting scheme for fast multidimensional physical simulation of propagation channels in wireless communication systems

Letrou¹

2007

2007 International Conference on Electromagnetics in Advanced Applications

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This paper illustrates the ability of Gaussian beam shooting techniques to accommodate large propagation problems in multipath contexts. Frame based decomposition of fields provides a flexible and efficient tool to perform beam launching. Channel transfer matrices are defined, which allow for a complete description of multidimensional channels through a limited number of coefficients. A beam re-expansion algorithm is proposed to address the problems of beam widening, and diffraction by objects with limited extension, through the conjoint use of wide/narrow frame windows.

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“…The accuracy of this method has already been demonstrated in a demanding multipath context (metallic waveguide), where the number of successive reflections encountered by a beam was more than 250 [15].…”

Section: Introductionmentioning

confidence: 97%