Statistical Modeling of 60 GHz Wireless Channel in an Underground Mine Gallery

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

doi:10.1109/icuwb.2015.7324515

Cited by 4 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, the large‐ and small‐scale results for both galleries show that the horn‐omni and omni‐horn configurations provide a higher time dispersion of the channel compared to the horn‐horn configuration due to the use of the omnidirectional antenna which provides a higher fluctuation of multipath amplitudes. Around two to three multipath components were observed in horn‐horn configuration versus around four to five in horn‐omni or omni‐horn scenarios [35]. Moreover, with a horn‐horn configuration, a higher time disperse channel was observed at 70 m compared to 40 m due to the narrow gallery dimension with different magnitudes of the roughness.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, at higher frequencies such as 60 GHz, this phenomenon might have more effect on the channel. Previously, the 60 GHz measurements and analysis in the CANMET mine were carried out in different aspects such as identifying the PL exponent and delay spread values with single polarization, investigating the link reliability based on the antenna diversity gain, implementing the deterministic ray-tracing modelling using reflection and diffraction phenomenon, and the scattering analysis reported in [11][12][13][33][34][35][36]. Hence we take into account different antenna polarizations in the present analysis of the underground mine wireless channel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…The 60 GHz frequency band has recently been studied and promoted in IEEE 802. 15.3c, IEEE 802.11.ad, WirelessHD, ECMA-387 standards for short-range multi-gigabit per second speed wireless local area network WLAN) inside the room, office, vehicle and in outdoor as small cell backhaul [1]- [4]. It has a 7 GHz unlicensed bandwidth, high oxygen absorption loss, and fewer interference features compared to lower-frequency bands (e.g., < 6 GHz).…”

Section: Introductionmentioning

confidence: 99%

“…In outdoor urban environments, the RMS lobe azimuth spread at 28 GHz is found to be 6 • [1]. However, several experiments have been conducted in CANMET underground mine at 60 GHz frequency and the time dispersion, scattering analysis, statistical modeling, antenna polarization effect results are reported recently in [15]- [18]. The angle of arrival results are disclosed herein and in the Ph.D. thesis of the first author [19].…”

Section: Introductionmentioning

confidence: 99%

“…However, several experiments have been conducted in CANMET underground mine at 60 GHz frequency and the time dispersion, scattering analysis, statistical modeling, antenna polarization effect results are reported recently in [15]- [18]. The angle of arrival results are disclosed herein and in the Ph.D. thesis of the first author [19]. The main contributions of this article are presenting the 60 GHz AoA measurement results and analysis those were conducted in different mine gallery level depths.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Angular Dispersion of a Scattered Underground Wireless Channel at 60 GHz

et al. 2020

Self Cite

View full text Add to dashboard Cite

The 60 GHz frequency band is identified as a suitable band for Gbps speed wireless communication in an Underground mine due to its high antenna directivity and high signal attenuation. However, the rough mine surface and the 5 mm wavelength may produce rich scattering phenomenon of multipath signals. To characterize the channel and more insight into the scattering, the angular dispersion measurements are conducted in different mine gallery depths and dimensions. The scattering is analyzed by the angle of arrivals of the incoming paths at the receiver, which is characterized by the statistical parameters of the multipath shape factors. The results of the multipath shape factor are explained and show that at around 3 m link distance, the incoming paths are mostly in two or three directions within a resolution angle of around between ±30 • and ±40 • . The statistical distribution of the multipath angle of arrivals follows a Gaussian probability distribution. The results also show that the angular spreads of multipath are proportional to the gallery dimensions and inversely proportional to the link distances.INDEX TERMS 60 GHz wideband channel measurements, underground mine, angle of arrivals, scattering.

show abstract