Articles with "radio propagation" as a keyword



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Review of Wireless Personal Communications Radio Propagation Models in High Altitude Mountainous Areas at 2.6 GHz

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Published in 2018 at "Wireless Personal Communications"

DOI: 10.1007/s11277-018-5713-6

Abstract: This paper presents five commonly used radio propagation models (RPMs) which are suitable for the prediction of path loss in macrocell environments of LTE wireless communication systems. These RPMs’ application in high altitude mountainous areas… read more here.

Keywords: propagation; mountainous areas; path loss; high altitude ... See more keywords
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Effects of Crowd Density on Radio Propagation at 24 GHz in a Pedestrian Tunnel for 5G Communications

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Published in 2023 at "IEEE Access"

DOI: 10.1109/access.2023.3269813

Abstract: In this paper, we report the results of radio propagation characterisation in a pedestrian tunnel with different crowd densities at 24 GHz using commercial ray-tracing software called Wireless InSite. The 3D empty tunnel and human… read more here.

Keywords: tunnel; radio propagation; crowd density; pedestrian tunnel ... See more keywords
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Modeling and Measurement of Radio Propagation in Tunnel Environments

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Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2016.2561903

Abstract: A simple radio frequency (RF) testing system that can be conveniently built and used for measuring radio propagation in tunnels is introduced. With the proposed testing system, RF power attenuation with distance in a train… read more here.

Keywords: modeling measurement; propagation; radio propagation; radio ... See more keywords
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A Radio Propagation Model for a Rainforest–River Environment Using UTD and Geometrical Optics

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Published in 2022 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2021.3117522

Abstract: This letter describes a radio propagation model for a mixed environment formed by rainforest and river in Brazil's Amazon region. The model uses geometrical optics and the uniform theory of diffraction for the calculation of… read more here.

Keywords: optics; radio propagation; rainforest river; model ... See more keywords
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Ray Tracing and Modal Methods for Modeling Radio Propagation in Tunnels With Rough Walls

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Published in 2017 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2017.2677398

Abstract: At the ultrahigh frequencies common to portable radios, tunnels such as mine entries are often modeled by hollow dielectric waveguides. The roughness condition of the tunnel walls has an influence on radio propagation, and therefore… read more here.

Keywords: propagation; modal methods; ray tracing; tracing modal ... See more keywords
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Greene Approximation Wide-Angle Parabolic Equation for Radio Propagation

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Published in 2017 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2017.2748222

Abstract: This paper presents the Greene second-order parabolic equation (PE) solution to model radio propagation over irregular terrain. This solution is implemented by finite-difference and shift-map technique. The second-order finite-difference approach performs well for slopes up… read more here.

Keywords: propagation; radio propagation; solution; parabolic equation ... See more keywords
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Better coverage, better outcomes? Mapping mobile network data to official statistics using satellite imagery and radio propagation modelling

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Published in 2020 at "PLoS ONE"

DOI: 10.1371/journal.pone.0241981

Abstract: Mobile sensing data has become a popular data source for geo-spatial analysis, however, mapping it accurately to other sources of information such as statistical data remains a challenge. Popular mapping approaches such as point allocation… read more here.

Keywords: mobile network; propagation modelling; coverage; better coverage ... See more keywords