Deterministic Modeling of Indoor Stairwells Propagation Channel

Fono, V. A.; Talbi, Larbi; Safia, Ousama Abu; Nedil, Mourad; Hettak, K.

doi:10.1109/lawp.2019.2961641

Cited by 6 publications

(8 citation statements)

References 15 publications

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“…In [41], path loss model for stairwell environment was presented based on the measurements at four different stairwells at 900 MHz and 1800 MHz. A deterministic ray-tracing model was presented for indoor stairwell channel at 10 GHz in [42], and the effects of diffraction and multiple diffractions from the edges of step were calculated using heuristic diffraction coefficients.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-Wave Propagation Measurement and Modeling in Indoor Corridor and Stairwell at 26 and 38 GHz

et al. 2021

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Accurate propagation characteristics are essential for future indoor millimeter-wave (mmWave) small cell network planning. This paper presents propagation measurements at 26 GHz and 38 GHz which are important candidate bands for fifth generation mmWave communication. Measurements are conducted in an indoor corridor, as well as a stairwell whose mmWave channel is seldom investigated before. In these measurements, an omnidirectional biconical antenna is used as transmitter and a steerable directional horn antenna is used as receiver. The directional and omnidirectional path loss exponents, shadow factors, cross-polarization discrimination ratios and root-mean-square delay spreads are analyzed for both line-of-sight and non-line-of-sight scenarios in both co-polarization and cross-polarization, and these characteristics are compared for different frequencies and environments. It is found obvious depolarization phenomenon in non-line-of-sight scenario for higher frequency. Compared to the corridor, the stairwell has larger path loss exponents and root-mean-square delay spreads, and the depolarization is also more evident in stairwell. The results in this paper are beneficial to building efficient and robust indoor mmWave communication systems.INDEX TERMS Millimeter-wave, indoor propagation, path loss, cross-polarization discrimination ratio, delay spread.

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Section: Introductionmentioning

confidence: 99%

Millimeter-Wave Propagation Measurement and Modeling in Indoor Corridor and Stairwell at 26 and 38 GHz

et al. 2021

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“…Although the study demonstrated that using distributing the energy transmitted across multiple frequency ranges, a more accurate estimation can be obtained due to frequency diversity, and the detrimental impacts of radiation pattern deviation can be avoided. The research [5] focused on the dynamic impacts of flying on radar cross-section models in aircraft. Her research was based on flight data from three distinct aircraft: a Piper PA-28 Archer II, a Boeing 737, and a Saab JAS 39 Gripen.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…To simulate a radar system, simulation reliability of results relies not only on target and radar models but also on the environment models of the radio frequency (RF) [2,3]. This includes diffraction [4,5], multipath [6], and clutter [2]. All of these parameters can only provide inadequate data on radar models and can be analyzed as a pattern-propagation parameter of the RF signal.…”

Section: Introductionmentioning

confidence: 99%

Identifying some regularities of radio frequency propagation of a radar system by analyzing different environmental effects

Hamza

Aziez

Reja

et al. 2022

EEJET

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Free space path loss is a function of frequency and propagation distance and the RF signal propagates at light speed in all directions in free space. The performance evaluation of wireless and radar communication technologies is related to understanding the propagation environments. This work presents the modeling of several RF propagation properties that include atmospheric attenuation due to rain, free space path loss, gas, and fog, as well as multipath propagations caused by ground bounces. The methodology discusses the developed model according to the series of (ITU) International Telecommunication Union references to radio wave propagation. This work discusses the Free Space Path Losses (FSPL), and Propagation Losses (PL) due to the atmosphere, precipitation, snow, rain, clouds, fog, atmospheric lensing and absorption, and polarization mismatch. The work also discusses the vertical coverage diagram and radar propagation factor. The obtained results demonstrate that the PL increases with frequency and range, at a 90-degree roll angle, the attenuation approaches infinity, and as the altitude rises, the amount of attenuation caused by lensing decreases. The analysis of attenuation at 1 km vs. frequency variations, at roughly 60 GHz, indicated a high absorption owing to air gas. Lensing attenuations are also offered as secondary outputs for convenience, the wideband channels present higher performance crossways and a wide range of target height as expected. When the target height increases, the influence of multi-path fading approximately vanishes entirely due to the variation increasing in the spreading delay between the bounce and direct pathway signals. This will reduce the coherence sum between these two samples on receiving by the target

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“…e ray tracing method is used to find the diffracted and reflected rays in a stairwell environment [36].…”

Section: Ray Tracing Simulationsmentioning

confidence: 99%

Measurements and Characterization for Millimeter-Wave Massive MIMO Channel in High-Speed Railway Station Environment at 28 GHz

Liu

Lin

et al. 2021

International Journal of Antennas and Propagation

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The millimeter-wave (mmWave) and massive multiple-input multiple-output (MIMO) wireless communication technologies provide vital means to resolve many technical challenges of the fifth-generation (5G) or beyond 5G (B5G) network. Analyzing the measured datasets extracted from the channel measurements can provide insight into the characteristics of radio channels in different scenarios. Therefore, mmWave massive MIMO channel measurements, simulation, and modeling are carried out in the high-speed railway waiting hall environments at 28 GHz. The multipath components (MPCs) parameters are estimated for line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios based on the space-alternating generalized expectation-maximization (SAGE) algorithm. Delay spread (DS), azimuth angle of arrival (AAoA), and elevation angle of arrival (EAoA) are analyzed. And they are processed by using the K-mean algorithm. In addition, propagation characteristics are simulated based on the improved ray tracing method of shooting and bouncing ray tracing/image (SBR/IM). The correctness of the improved ray tracing method is verified by comparing the measured results with the simulated results. The large-scale path loss (PL) is characterized based on close-in (CI) free-space reference distance model and the floating-intercept (FI) path loss model. Furthermore, statistical distributions for root-mean-square delay spread (RMS DS) are investigated. The Gaussian distribution best fits the measured data of RMS delay spread. Finally, multipath clustering is identified using the multipath component distance (MCD). The analysis of these results from mmWave massive MIMO channel measurements and simulation may be instructive for the deployment of the 5G or B5G wireless communications systems at 28 GHz.

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Deterministic Modeling of Indoor Stairwells Propagation Channel

Cited by 6 publications

References 15 publications

Millimeter-Wave Propagation Measurement and Modeling in Indoor Corridor and Stairwell at 26 and 38 GHz

Millimeter-Wave Propagation Measurement and Modeling in Indoor Corridor and Stairwell at 26 and 38 GHz

Identifying some regularities of radio frequency propagation of a radar system by analyzing different environmental effects

Measurements and Characterization for Millimeter-Wave Massive MIMO Channel in High-Speed Railway Station Environment at 28 GHz

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