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Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
Published on: June 25, 2021
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IRS-assisted vehicular visible light communications systems: channel modeling and performance analysis
Applied Optics
|January 4, 2024
Summary
Intelligent reflecting surfaces (IRSs) enhance vehicular visible light communications (VVLC) by mitigating line-of-sight blockages. This study models IRS-assisted VVLC systems, analyzing performance under various conditions and parameters.
Area of Science:
- Engineering
- Communications
- Optics
Background:
- Visible light communications (VLC) offer an alternative to crowded radio frequency bands.
- Vehicular visible light communications (VVLC) utilize vehicle lamps for data transmission.
- Line-of-sight (LoS) blockage is a significant challenge in VLC systems.
Purpose of the Study:
- To propose and analyze intelligent reflecting surfaces (IRSs) for overcoming LoS blockage in VVLC systems.
- To investigate the impact of various environmental and system parameters on VVLC performance.
- To derive a closed-form expression for maximum achievable link distance in IRS-assisted VVLC.
Main Methods:
- Developed a channel model for IRS-assisted VVLC systems.
- Investigated path loss under diverse weather conditions (clear, rainy, fog) and radiation patterns (Lambertian, Gaussian, LED).
- Analyzed the influence of photodetector aperture size, IRS properties, and distances on system performance.
Main Results:
- IRS installation effectively overcomes LoS blockage issues in VVLC.
- Path loss is significantly affected by weather, radiation patterns, and system parameters.
- A closed-form expression for maximum link distance versus error probability was derived.
Conclusions:
- IRS-assisted VVLC systems show promise for reliable vehicle-to-vehicle communication.
- System design must consider environmental factors and specific component parameters for optimal performance.
- Further research can explore advanced IRS configurations and integration strategies for enhanced VVLC.
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