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Enhancing Security in Visible Light Communication: A Tabu-Search-Based Method for Transmitter Selection.

Ge Shi1, Wei Cheng2, Xiang Gao2

  • 1The School of Information Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.

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|March 28, 2024
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Summary
This summary is machine-generated.

This study enhances visible light communication (VLC) security by optimizing light-emitting diode (LED) selection for multiple users. A tabu search algorithm effectively maximizes the sum secrecy rate, ensuring secure indoor wireless communication.

Keywords:
LED selectionphysical layer securitysecrecy ratevisible light communication

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Area of Science:

  • Wireless Communication
  • Information Security
  • Optical Engineering

Background:

  • Visible Light Communication (VLC) systems offer high bandwidth but face security challenges due to signal leakage.
  • Ensuring user privacy and data confidentiality in indoor VLC environments is crucial.
  • The random positioning of users (UEs) and distributed light-emitting diodes (LEDs) complicates security optimization.

Purpose of the Study:

  • To maximize the sum secrecy rate for multiple users in a VLC system.
  • To develop an efficient algorithm for selecting the optimal LED for each user to enhance confidentiality.
  • To investigate low-complexity LED selection strategies for practical VLC security.

Main Methods:

  • Formulation of a non-convex optimization problem for maximizing the sum secrecy rate.
  • Development of a tabu search-based LED selection algorithm to avoid local optima.
  • Introduction of three computationally efficient LED selection strategies.

Main Results:

  • The proposed tabu search algorithm achieved a secrecy performance within 1% of the global optimal value.
  • The developed algorithm effectively managed trial vectors to expedite the search process.
  • The low-complexity strategies showed a performance gap of 28% compared to the global optimum.

Conclusions:

  • The tabu search algorithm provides a near-optimal solution for enhancing VLC system security.
  • Efficient LED selection is critical for maximizing secrecy rates in indoor VLC environments.
  • Further research into low-complexity strategies can facilitate practical deployment of secure VLC systems.