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UAV Array-Aided Visible Light Communication with Enhanced Angle Diversity Transmitter.

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Summary
This summary is machine-generated.

Unmanned aerial vehicle (UAV) aided visible light communication (VLC) systems can be significantly improved in energy efficiency (EE) using enhanced angle diversity transmitters (ADTs). This research demonstrates substantial EE gains with multi-layer ADTs and UAV arrays.

Keywords:
enhanced angle diversity transmitter (ADT)unmanned aerial vehicle (UAV)visible light communication (VLC)

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Area of Science:

  • Wireless communication
  • Optical communication
  • Robotics

Background:

  • Visible light communication (VLC) using unmanned aerial vehicles (UAVs) offers network flexibility but faces limitations in UAV endurance and service capability.
  • Energy efficiency (EE) is a critical challenge for UAV-aided VLC systems.

Purpose of the Study:

  • To enhance the energy efficiency (EE) of UAV-aided VLC systems.
  • To address the limitations of UAV endurance and service capability.
  • To propose and evaluate an enhanced angle diversity transmitter (ADT) for UAV-aided VLC.

Main Methods:

  • Designing enhanced ADTs with multi-layer LEDs, multiple LEDs per layer, and inter-layer rotation angles.
  • Jointly optimizing the inclination angle of side LEDs in the ADT and the hovering height of UAVs.
  • Simulating and analyzing the EE performance of centralized single-UAV and distributed UAV array VLC systems.

Main Results:

  • Enhanced ADTs significantly improve the EE of single-UAV VLC systems, achieving up to 215.7% enhancement compared to single LED transmitters.
  • The proposed ADT structures incorporate multi-layer LEDs, inter-layer rotation, and layer-doubled designs.
  • A distributed UAV array further boosts EE, with a four-UAV system reaching a peak EE of 19.9 bits/J/Hz, a 298% improvement over single-UAV configurations.

Conclusions:

  • Enhanced ADTs are effective in improving the EE of UAV-aided VLC systems.
  • Distributed UAV arrays offer superior EE performance compared to centralized single-UAV systems.
  • The proposed system design effectively minimizes power consumption while meeting illumination and communication requirements.