High-Resolution Delay Spread of Wide-Band Wireless Link in Long Tunnels—Theory and Experimental Verification

Taragin, Yehuda; Rapaport, Liat; Elkayamn, Niv; Pinhasi, Gad A.; Pinhasi, Y.

doi:10.3390/electronics11142140

Cited by 2 publications

(2 citation statements)

References 24 publications

(32 reference statements)

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“…Theoretical and experimental studies [20][21][22][23] relate to power losses, phase dispersion, and temporal delay spread. In these studies, experimental tests were performed using full-scale tunnels and a scaled model with corresponding conditions.…”

Section: Introductionmentioning

confidence: 99%

Scaled Model for Studying the Propagation of Radio Waves Diffracted from Tunnels

Glikstein,

Pinhasi,

Pinhasi

2024

Electronics

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One of the major challenges in designing a wireless indoor–outdoor communication network operating in tunnels and long corridors is to identify the optimal location of the outside station for attaining a proper coverage. It is required to formulate a combined model, describing the propagation along the tunnel and the resulting diffracted outdoor pattern from its exit. An integrated model enables estimations of the radiation patterns at the rectangular tunnel exit, as well as in the free space outside of the tunnel. The tunnel propagation model is based on a ray-tracing image model, while the free-space diffraction model is based on applying the far-field Fraunhofer diffraction equation. The model predictions of sensing the radiation intensity at the tunnel end and at a plane located at a distance ahead were compared with experimental data obtained using a down-scaled tunnel model and shorter radiation wavelength correspondingly. This down-scaling enabled detailed measurements of the radiation patterns at the tunnel exit and at the far field. The experimental measurements for the scaled tunnel case fit the theoretical model predictions. The presented model accurately described the multi-path effects emerging from inside the tunnel and the resulting outdoor diffracted pattern at a distance from the tunnel exit.

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Section: Introductionmentioning

confidence: 99%

Scaled Model for Studying the Propagation of Radio Waves Diffracted from Tunnels

Glikstein,

Pinhasi,

Pinhasi

2024

Electronics

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“…and ( ) 0, 0 R stand for the LOS (0,0) ray) and i Γ are the respective field reflectivity of each ray. The impulse response of the medium is given by the inverse Fourier transformation [4]:…”

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confidence: 99%

Dispersive Effects in Wide-Band Wireless Links Operating in Long Corridors

Pinhasi,

Glikstein

et al. 2023

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023

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Indoor propagation of radio waves in tunnels and long corridors is studied theoretically and experimentally. The theoretical model is based on ray-tracing, using quasi-optical approach [1]-[4]. In multi-ray propagation, the received signal at a carrier frequency f is given as a summation of interfering rays arriving at the receiving sight. This includes the line-of-sight (LOS) ray, as well as reflected rays in the horizontal and vertical dimensions from the tunnel walls, ceiling and floor. At any point in the tunnel cross-section (x,y), the normalized transfer function of the field is given as a summation of arriving rays [2-4]:

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High-Resolution Delay Spread of Wide-Band Wireless Link in Long Tunnels—Theory and Experimental Verification

Cited by 2 publications

References 24 publications

Scaled Model for Studying the Propagation of Radio Waves Diffracted from Tunnels

Scaled Model for Studying the Propagation of Radio Waves Diffracted from Tunnels

Dispersive Effects in Wide-Band Wireless Links Operating in Long Corridors

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