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Multi-Antenna Reception Channel with Coupled Surface Wave Propagation in IIoT Systems: Measurement, Modeling, and Analysis
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DOI：10.23919/cje.2025.00.151.png)
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Abstract
En 中文
The surface wave (SW) and free-space coexisting propagation mechanisms in industrial internet-ofthings (IIoT) is investigated. A novel single-input multiple-output channel under the hybrid propagation mechanism is measured, modeled and analyzed. In the proposed channel model, one of the receiving antennas is coupled with a long SW transmission line, with the rest ones distributed in free-space mode. A path loss (PL) model with three degrees of freedom is established, including d(T-RSW), d(T-RFS) , and the offset angle theta. The d(T-RSW) dominate the interference degree of the SW propagation mode on the free-space propagation mode. Validation results show that the PL in the free-space propagation increases by 2-8 dB under the interference of the SW propagation mode. When d(T-RSW) is fixed and the offset angle theta is varied in the free-space mode, the PL increase is negligible (approximately 2 dB) for theta less than 30 degrees. When it is larger than 30 degrees, the PL escalates significantly. When theta is fixed and the d(T-RSW) is varied, the fading severity is weakened as the d(T-RSW) increasing. It indicates SW and free-space propagation can exist in IIoT scenarios, and the reliable deployment of the SW propagation can improve the transmission performance in IIoT scenarios.
Keywords:
Antennas
Receiving antennas
Antennas and propagation
Antenna arrays
Antenna theory
Broadband antennas
Dipole antennas
Phased arrays
Ultra wideband antennas
System-on-chip
Surface wave
Single-input multiple-output
Multi-antenna
Horizontal angle
Interference
Journal
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3
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62
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1.7K
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