Securing Communication Networks at the Physical Layer: A DRL and Phase Optimization Approach

Securing communication between multiple users efficiently while there are too many potential eavesdroppers has become an important issue with the rise of the Internet of Things (IoTs). This paper extends on earlier research, moving from a single‐user and single‐eavesdropper scenario to a complex mul...

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Published in:IET signal processing Vol. 2025; no. 1
Main Authors: Kamal, Mian Muhammad, Abideen, Syed Zain Ul, Sharafian, Amin, Ibrahim, Anwar Hassan, Islam, Muhammad, Habib, Shabana
Format: Journal Article
Language:English
Published: Stevenage John Wiley & Sons, Inc 01.01.2025
Wiley
Subjects:
Algorithms
Bit error rate
Communication
Communication networks
Cybersecurity
Data security
Deep learning
Eavesdropping
Energy consumption
Energy efficiency
Internet of Things
Optimization techniques
Power supply
Reconfigurable intelligent surfaces
Security software
Signal quality
Smart cities
ISSN:1751-9675, 1751-9683
Online Access:Get full text
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Summary:Securing communication between multiple users efficiently while there are too many potential eavesdroppers has become an important issue with the rise of the Internet of Things (IoTs). This paper extends on earlier research, moving from a single‐user and single‐eavesdropper scenario to a complex multiuser and multieavesdropper context, and incorporates an advanced physical layer security (PLS) technique for the first time. Using reconfigurable intelligent surfaces (RISs) enhances the strength and quality of signals for intended users, while those to the unintended users are suppressed. Real‐time control of the RIS phase shifts is enabled through a deep deterministic policy gradient (DDPG) algorithm and this control significantly changes the trade‐off between security and energy wastage. The simulation results demonstrate that the developed approach can scale up in densely populated urban centers, while increasing the bit error rate (BER) performance and the overall energy efficiency across different wireless mobile channels.
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ISSN:1751-9675
1751-9683
DOI:10.1049/sil2/6422115