Securing Information Transmission in RIS-enabled NOMA Network Through Control Jamming

The goal of this paper is to examine the secrecy of a new control-jammer (CJ) aided RIS enabled NOMA network. Through RIS, a source transmits a combined signal to NOMA users in the considered system model. Additionally, a jamming node transmits interference signals to prevent eavesdropping on the confidential information of users. The major focus is to improve the secrecy rate of NOMA users through the use of a CJ. Further, this study examines the physical layer security, especially secrecy rates investigation under CJ conditions, and how they compare to other strategies. Additionally, this work analyzes the previously unexplored performance gap regarding security between CJ and other jamming methods. Based on simulation results, CJ significantly enhances the network's confidentiality, which makes it an excellent choice for protecting confidential data in NOMA networks aided by RIS. Finally, this work underscores CJ as a novel approach for safeguarding sensitive information in such networks.