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Original research APPLICATION PHYSICAL LAYER SECURITY TECHNIQUES FOR ENHANCEMENT OF COOPERATIVE NOMAPages 141-150
Abstract
Over the past decades, wireless communications have proliferated, and the growing demand for wireless applications and the number of connected users have led to the advancing commercialization of 5G technology and the predicted development of 6G technologies. Physical layer security is one of the technologies that keep pace with the advancement of generations. This progress offers significant advantages to users and requires strong security. Data transmission in wireless communications suffers from serious threats. To protect users from eavesdropping attacks, two PLS techniques are applied: Artificial Noise (AN) and Cooperative Jamming (CJ). These techniques aim to degrade the reception quality of potential eavesdroppers without affecting users. Several metrics are applied to maintain information confidentiality, including SR, SC, SOP, and SEE for SNR. This practical analysis was conducted in MATLAB (Monte Carlo) on the application of AN and CJ techniques on the AF relay. The results showed that the artificial noise technique achieves better results in providing high security to users. The main characteristic of artificial noise is its ability to generate a specific interference signal based on channel characteristics. Future work indicates the application of other PLS techniques on the relay.
Keywords: Artificial Noise, Cooperative Jamming, Physical Layer Security, Non-Orthogonal Multiple Access, Raley.
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Jouana H. Hassan, 
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