MIMO-UWB Channel Characterization Within an Underground Mine Gallery

Mabrouk, Ismail Ben; Talbi, Larbi; Nedil, Mourad; Hettak, K.

doi:10.1109/tap.2012.2207361

Cited by 60 publications

(45 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the power delay profile is directly determined from the impulse response and gives the relative received power as a function of the excess delay. The following formulas represent the MIMO channel and the power delay profile (PDP) respectively [6].…”

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

“…The PL-depicted in Figure 5 is a significant link budget component which describes the large-scale effect of the fading channel. It is described by the following formula [6]:…”

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

“…where P L dB is the P L at a certain position; H i,j,f is the spatial sub-channel path strength (from the ith transmitting antenna to the jth receiving antenna) at a given frequency f ; ξ is the averaging operator over all receiving antennas, transmitting antennas, frequencies, and snapshots [6].…”

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

“…With regards to polarization, different studies have reported measurements results on the horizontal, vertical and cross-polarized setups [6][7][8][9][10]. However, for circularly polarized antennas' systems, very few studies are reported on the channel characterization in a tunnel environment and no study has yet been performed in a mine environment.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Channel Characterization of Circularly Polarized Antenna Mimo System in an Underground Mine

Azhari¹,

Talbi²,

Arabi³

et al. 2018

PIER M

Self Cite

View full text Add to dashboard Cite

Abstract-In this paper, a channel characterization of an RF link using circularly polarized antennas inside a mine is performed. The association of circular polarization with multiple-input-multiple-output (MIMO) radio technologies represents a powerful tool to improve the performance of an underground RF channel. The statistical parameters of the channel are derived from in-mine measurements at the 2.4 GHz band for both co-polarization (CP) and cross-polarization (XP) scenarios. Results show a remarkable improvement through the use of MIMO combined with circular polarization compared to the regular patch MIMO antenna system, in terms of channel capacity and path loss. This improvement increases significantly at the XP scenarios, reaching up to 18 bps/Hz for channel capacity and up to 21 dB for path loss. The RMS delay spread for a circularly polarized setup is generally higher than the linearly polarized MIMO patch setup due to surface roughness of the gallery. In the linear polarization case, a signal degradation of more than 15 dB at the XP case is observed compared to the CP scenario. This signal loss that is due to depolarization is somewhat mitigated by the surface roughness. Due to its superior and stable performance, MIMO combined with circular polarization is better suited than a regular MIMO patch system for in-mine uses especially in the applications where the transmitter may change direction with respect to the receiver.

show abstract

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

“…The PL-depicted in Figure 5 is a significant link budget component which describes the large-scale effect of the fading channel. It is described by the following formula [6]:…”

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

Section: Channel Impulse Response and Path Lossmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Channel Characterization of Circularly Polarized Antenna Mimo System in an Underground Mine

Azhari¹,

Talbi²,

Arabi³

et al. 2018

PIER M

Self Cite

View full text Add to dashboard Cite

show abstract

“…Meanwhile, without sacrificing transmitted power, multiple-input multipleoutput (MIMO) technology has attracted major interest for its abilities to enhance the data rate and reliability in rich scattering environments [1]. Therefore, UWB MIMO technology is a rising research field to solve the multi-path fading and low SNR problems of UWB system [2] in recent years, and selective fading problem of MIMO system can also be improved by it.…”

Section: Introductionmentioning

confidence: 99%

Dual Band-Notched Uwb Mimo Antenna With Uniform Rejection Performance

Li¹,

Wu²,

Wu³

2017

PIER M

View full text Add to dashboard Cite

Abstract-A compact dual band-notched ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with uniform rejection performance is designed on an FR4 substrate (35 × 23 × 1.6 mm 3 ). Compared with the existing UWB MIMO antennas, a second-order notched band with uniform performance for 5.15-5.825 GHz is achieved, which results from the interplay between a 1/3λ open-end slot and a 1/2λ parasitic strip. A 1/4λ open-end slot is also applied to the 3.3-3.7 GHz reject band. The two slots are connected at their open ends, that can help to get the uniform reject performance for 5.15-5.825 GHz and make the high cutoff frequency of the impedance matching band go toward the higher frequencies. Excluding the two rejected bands, a band with |S 11 | ≤ −10 dB, |S 21 | ≤ −17 dB and frequency ranged from 3.1 to 10.9 GHz is achieved, and results show that a uniform performance for 5.15-5.825 GHz is obtained.

show abstract