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Jamming precoding in AF relay-aided PLC systems with multiple eavessdroppers.

Zhengmin Kong1, Jiaxing Cui1, Li Ding2

  • 1School of Electrical Engineering and Automation, Wuhan University, Wuhan, 430072, China.

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|April 9, 2024
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Summary
This summary is machine-generated.

This study enhances information security in power line communication (PLC) using physical layer security (PLS) and a novel jamming scheme. The proposed method effectively maximizes secrecy rates against eavesdroppers in MIMO channels.

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Area of Science:

  • Information Security
  • Telecommunications Engineering
  • Signal Processing

Background:

  • Information security is critical in the digital era.
  • Power Line Communication (PLC) systems face security challenges.
  • Physical Layer Security (PLS) offers a promising solution.

Purpose of the Study:

  • To investigate physical layer security (PLS) in a relay-aided MIMO-PLC system.
  • To address secure signal transmission against multiple colluding and non-colluding eavesdroppers.
  • To maximize the secrecy rate of the communication system.

Main Methods:

  • A two-phase jamming scheme using a full-duplex (FD) amplify-and-forward (AF) relay.
  • Optimization of jamming and transmitting precoding matrices at source and relay.
  • Application of a block coordinate descent (BCD) algorithm for efficient problem-solving.

Main Results:

  • The proposed block coordinate descent (BCD) algorithm effectively solves the optimization problem.
  • Simulation results validate the convergence and performance of the algorithm.
  • The jamming scheme significantly improves secrecy rates compared to non-jamming methods.

Conclusions:

  • The proposed approach guarantees secure communications in realistic MIMO-PLC channel models.
  • The two-phase jamming scheme is effective against both colluding and non-colluding eavesdroppers.
  • This research contributes to enhanced information security in PLC systems.