Abstract
Enhancing information security has become increasingly significant in the digital age. This paper investigates the concept of physical layer security (PLS) within a relay-aided power line communication (PLC) system operating over a multiple-input multiple-output (MIMO) channel based on MK model. Specifically, we examine the transmission of confidential signals between a source and a distant destination while accounting for the presence of multiple eavesdroppers, both colluding and non-colluding. We propose a two-phase jamming scheme that leverages a full-duplex (FD) amplify-and-forward (AF) relay to address this challenge. Our primary objective is to maximize the secrecy rate, which necessitates the optimization of the jamming precoding and transmitting precoding matrices at both the source and the relay while adhering to transmit power constraints. We present a formulation of this problem and demonstrate that it can be efficiently solved using an effective block coordinate descent (BCD) algorithm. Simulation results are conducted to validate the convergence and performance of the proposed algorithm. These findings confirm the effectiveness of our approach. Furthermore, the numerical analysis reveals that our proposed algorithm surpasses traditional schemes that lack jamming to achieve higher secrecy rates. As a result, the proposed algorithm offers the benefit of guaranteeing secure communications in a realistic channel model, even in scenarios involving colluding eavesdroppers.
Document Type
Journal Article
Date of Publication
12-1-2024
Volume
14
Issue
1
PubMed ID
38594318
Publication Title
Scientific Reports
Publisher
Nature
School
School of Science
RAS ID
70026
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Kong, Z., Cui, J., Ding, L., Huang, T., & Yan, S. (2024). Jamming precoding in AF relay-aided PLC systems with multiple eavessdroppers. Scientific Reports, 14, article 8335. https://doi.org/10.1038/s41598-024-58735-y