Experimental Results of Rician K-Factor and Co-Polarization Ratio of 60 GHz Wireless Channel in an Underground Mine Gallery

Tariq, Shah Ahsanuzzaman Md; Despins, Charles; Affes, Sofiène; Nerguizian, Chahé

doi:10.1109/icuwb.2015.7324451

Cited by 5 publications

(3 citation statements)

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“…Here, P B (v,γ) is acquired by (15) [23], where Δγ represents the Doppler resolution for s = −258 3, −258, −257 7, … , 0, … , 258 3, and is 3.94 Hz. In (16), f d is the Doppler frequency shift in Hz, v is the TX and RX relative velocity, λ is the wavelength, and θ 1 is the angle (units: degree) shown in Figure 14. Figure 15 is a screenshot of the experiment's video at 20 s, and Figure 16 is the delay-Doppler spectrum for 20 s. Because of the short distance between the two cars, the delay of the LOS path is very small (the point marked by the white arrow in Figure 16 is the LOS path).…”

Section: U-shapementioning

confidence: 99%

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Vehicle-to-Vehicle Radio Channel Characteristics for Congestion Scenario in Dense Urban Region at 5.9 GHz

Shui

et al. 2018

International Journal of Antennas and Propagation

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This paper reports the results of a car-following measurement of the wireless propagation channel at 5.9 GHz on a seriously congested urban road in Wuhan, China. The small-scale amplitude-fading distribution was determined to be a Ricean distribution using the Akaike information criterion. This result shows that this car-following scenario can be regarded as a line-of-sight radio channel. Moreover, the statistical K-factor features follow a Gaussian distribution. According to the power delay profile and average power delay profile, we found that street buildings in this dense urban environment contributed to very strong reflection phenomena. The impact of a powerful reflection is analyzed through path loss, delay, and Doppler spreads in the channel statistical properties. In the frequency domain, we observe a U-shape delay-Doppler spectrum that proved that the dense urban scenario consists of scattering channels. All these results are summarized in tabular form that will be useful in the modeling of vehicle-to-vehicle wireless communication systems.

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Section: U-shapementioning

confidence: 99%

“…Reference [11] researched path loss models for four slope scenarios. The characteristics of the K-factor, which is an important parameter of the Ricean distribution, were studied in [12][13][14][15][16]. Finally, [17] studied wireless channel properties on high-speed railways.…”

Section: Introductionmentioning

confidence: 99%

Vehicle-to-Vehicle Radio Channel Characteristics for Congestion Scenario in Dense Urban Region at 5.9 GHz

Shui

et al. 2018

International Journal of Antennas and Propagation

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“…Some parts of this article are archived in the first author's Ph.D. thesis reported in [35]. Some results and analysis of this article are summarized from the author's studies reported in [36][37][38][39]. In this article, the measurements and characterization are examined by considering the facts of polarization, scattering, waveguide, and antenna radiation patterns dealing with the different magnitudes of the floor, wall, and ceiling roughness in different gallery dimensions.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a 60 GHz scattered wireless channel with different antenna polarizations for underground multimedia applications

Tariq

Despins

Affes

et al. 2021

IET Microwaves Antenna & Prop

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Large scale (i.e. <10 m) and small scale (i.e. 1 � 1� 1 cm) measurements and characterization of a scattered wireless channel with different antenna polarizations and configurations in the underground mine galleries at 60 GHz are addressed. Results show that the rough surface scattering and the gallery dimensions affect the path loss (PL) exponent and it becomes smaller than the free space. Vertically polarized antennas give a lower value of the PL exponent and root mean square (RMS) delay spread compared to the horizontal one. The small scale 3D measurement results show that the power loss of around 1-5 dB within a small scale cubical area. Results also show that the channel is less time dispersive in a wider gallery and observed a higher value of the RMS delay spread compared to a smaller gallery. The statistical results of the small scale multipath amplitude fading provide a better fit with the Rician distribution. The effects such as scattering, polarization, antenna radiation patterns, and waveguide which caused increase and decrease of the value of PL exponent and delay spread are also analysed. Results revealed that a directional narrow beam dualpolarized antenna configuration might be a good candidate in this environment. | INTRODUCTIONNowadays, short-range wireless communications offer huge possibilities to provide seamless multimedia services. Recently, the 60 GHz band has generated significant interest because of its high data rate (i.e. >1 Gbps) capability within a short-range communication in indoor environments [1]. However, the utility of wireless communications is also essential for safety and productivity particularly in an underground mine environment [2,3]. Besides the multimedia services (voice, video, and data), wireless communications are used for geolocalization of miners and equipment, speedy rescue operation of trapped miners under debris etc. In the mining industry, the well-known Through The Earth communication systems are used for vehicle tracking, monitoring, and controlling. Other systems such as radio-frequency identification, Zigbee, wireless sensor networks, and Wi-Fi systems are also convenient to use in underground mine. The use of the Internet of Things and This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Analytical Calculation of Rician K-Factor for Indoor Wireless Channel Models

et al. 2017

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Experimental Results of Rician K-Factor and Co-Polarization Ratio of 60 GHz Wireless Channel in an Underground Mine Gallery

Cited by 5 publications

References 9 publications

Vehicle-to-Vehicle Radio Channel Characteristics for Congestion Scenario in Dense Urban Region at 5.9 GHz

Vehicle-to-Vehicle Radio Channel Characteristics for Congestion Scenario in Dense Urban Region at 5.9 GHz

Characterization of a 60 GHz scattered wireless channel with different antenna polarizations for underground multimedia applications

Analytical Calculation of Rician K-Factor for Indoor Wireless Channel Models

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