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Unmanned Aerial Vehicle-Assisted Terahertz-Visible Light Communication Systems: An In-Depth Performance Analysis.

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This summary is machine-generated.

This study shows that unmanned aerial vehicle (UAV)-assisted terahertz (THz)-visible light communication (VLC) systems offer superior performance over Free-Space Optics (FSO)-VLC and Radio-Frequency (RF)-VLC at high signal-to-noise ratios (SNRs). The decode-and-forward (DF) relay architecture enhances communication reliability.

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BERTHz communicationsUAVVLCoutage probability

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Area of Science:

  • Wireless communication systems
  • Optical communication technologies
  • Aerial robotics and networking

Background:

  • Unmanned Aerial Vehicles (UAVs) are increasingly used for communication relays.
  • Terahertz (THz) and Visible Light Communication (VLC) offer high bandwidth potential.
  • Hybrid THz-VLC systems require performance investigation for UAV applications.

Purpose of the Study:

  • To evaluate the performance of a dual-hop UAV-assisted communication system using THz for the first hop and VLC for the second.
  • To derive analytical expressions for end-to-end bit error rate (BER).
  • To compare the proposed system with existing Free-Space Optics (FSO)-VLC and Radio-Frequency (RF)-VLC systems.

Main Methods:

  • Derivation of closed-form expressions for end-to-end bit error rate (BER).
  • Utilizing Monte Carlo simulations to validate analytical models.
  • Performance analysis using BER and outage probability metrics.

Main Results:

  • The proposed UAV-assisted THz-VLC system demonstrates superior performance compared to FSO-VLC and RF-VLC at higher signal-to-noise ratios (SNRs).
  • Analytical BER expressions were validated by simulation results.
  • The decode-and-forward (DF) relay architecture proved effective in the dual-hop system.

Conclusions:

  • UAV-assisted THz-VLC communication systems are feasible and offer significant performance advantages.
  • The system's effectiveness is particularly notable in high SNR environments.
  • This research provides insights into the capabilities and constraints of hybrid THz-VLC UAV networks.