Nonisotropic Scattering Characteristic in an Alternant Tree-Blocked Viaduct Scenario on High-Speed Railway at 2.35 GHz

Sun, Rongchen; Cheng, Tao; Liu, Liu; Zhang, Tan; Zhang, Lingwen; Zhou, Tao

doi:10.1155/2014/642894

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…Place these finite effective scatterers on the surface, the joint angular distribution consists of the azimuth and elevation angles,characterize the distribution of effective scatterers using Von Mises Fisher pdf as in (22) for the single bounce component from the sphere and the elliptic cylinder; 5.…”

Section: D Wideband Non-stationary Mimo Hst Theoretical Channel Modelmentioning

confidence: 99%

“…The idea of the local scattering function (LSF) was first developed in [21] to characterize channels as non-stationary. The non-WSS channel model for generalized narrowband MIMO was introduced in [22] and yet mmWave frequencies are supposed to be wideband since they have a large bandwidth. Furthermore, the effect of a wideband non-stationary HST channel on channel capacity discussed in [23] did not consider mmWave frequencies.…”

Section: Introductionmentioning

confidence: 99%

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A Stochastic Confocal Elliptic-Cylinder Channel Model for 3D MIMO in Millimeter-Wave High-Speed Train Communication System

Assiimwe¹,

Marye²

2022

Electronics

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Massive MIMO technology is among the most promising solutions for achieving higher gain in 5G millimeter-wave (mmWave) channel models for high-speed train (HST) communication systems. Based on stochastic geometry methods, it is fundamental to accurately develop the associated MIMO channel model to access system performance. These MIMO channel models could be extended to massive MIMO with antenna arrays in more than one plane. In this paper, the proposed MIMO 3D geometry-based stochastic model (GBSM) is composed of the line of sight component (LOS), one sphere, and multiple confocal elliptic cylinders. By considering the proposed GBSM, the local channel statistical properties are derived and investigated. The impacts of the distance between the confocal points of the elliptic cylinder, mmWave frequencies of 28 GHz and 60 GHz, and non-stationarity on channel statistics are studied. Results show that the proposed 3D simulation model closely approximates the measured results in terms of stationary time. Consequently, findings show that the proposed 3D non-wide-sense stationary (WSS) model is better for describing mmWave HST channels in an open space environment.

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Section: D Wideband Non-stationary Mimo Hst Theoretical Channel Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Stochastic Confocal Elliptic-Cylinder Channel Model for 3D MIMO in Millimeter-Wave High-Speed Train Communication System

Assiimwe¹,

Marye²

2022

Electronics

View full text Add to dashboard Cite

show abstract

“…2) The viaduct scenario is common for HSTs as they often operate on viaducts [51]- [67]. The main purpose of viaducts is to ensure the smoothness of the rail and the high speed of the train.…”

Section: Hst Channel Measurementsmentioning

confidence: 99%

“…In the former, most scatterers located within 50 m from the viaduct are lower than the surface of the viaduct and therefore their impact on the propagation characteristics is negligible. In the low viaduct scenario [67], [68], some of the nearby scatterers are higher than the surface of the viaduct and consequently they introduce rich reflections and scattering components that may result in a severe shadow fading and/or extra pathloss [37].…”

Section: Hst Channel Measurementsmentioning

confidence: 99%