Multiple‐input multiple‐output beam‐space for high‐speed wireless communication in underground mine

Ghaddar, Mohamad; Nedil, Mourad; Ben Mabrouk, Ismail; Talbi, Larbi

Abstract

This study presents a new low-cost multiple-input multiple-output (MIMO) beam-pace technique to increase the overall link capacity of wireless MIMO communications systems in scatter-rich underground mines. This technique is based on generating multiple orthogonal beams for data spatial multiplexing using conformal cylindrical-shape patch arrays. Hence, this study is intended to reveal interests towards the use of conformal MIMO systems for underground mine communications. Two separate 4 × 4 MIMO measurement campaigns are performed and then investigated in a comparative way; the first uses conformal microstrip patch arrays (CMPA), while the second uses conventional planar microstrip patch arrays (PMPA). Based on sweeping-frequency technique (2.35–2.55) GHz, the channel performance is characterised in terms of path loss, fading distribution, capacity and RMS time dispersion parameters. Whether under a line of sight (LOS) or a non-LOS (NLOS) condition, the extracted results confirm the performance priority of CMPA for underground mines communications as they further enhance the propagation characteristics and the capacity gain of the channel; under NLOS, a maximal capacity of 12.95 bits/s/Hz is achieved compared to 9.6 bits/s/Hz obtained using PMPA. For LOS and NLOS cases, maximal capacity boosts of up to 0.43 and 3.35 bits/s/Hz are achieved over PMPA, respectively.

Citation

Ghaddar, M., Nedil, M., Ben Mabrouk, I., & Talbi, L. (2016). Multiple‐input multiple‐output beam‐space for high‐speed wireless communication in underground mine. IET Microwaves, Antennas and Propagation, 10(1), 8-15. https://doi.org/10.1049/iet-map.2014.0464

• Journal Article Type: Article
• Acceptance Date: Aug 27, 2015
• Online Publication Date: Jan 1, 2016
• Publication Date: Jan 1, 2016
• Deposit Date: May 26, 2023
• Journal: IET Microwaves, Antennas and Propagation
• Print ISSN: 1751-8725
• Electronic ISSN: 1751-8733
• Publisher: Institution of Engineering and Technology (IET)
• Volume: 10
• Issue: 1
• Pages: 8-15
• DOI: https://doi.org/10.1049/iet-map.2014.0464
• Public URL: https://durham-repository.worktribe.com/output/1172692