A novel joint optimization of downlink transmission using physical layer security in cooperative 5G wireless networks

Abstract

Privacy and perspective are attracting more and more attention from worldwide users, so security in wireless communication system has become popular in recent researches, especially the physical layer security in 5G systems. In this article, we discuss the physical layer security in 5G downlink transmission systems; we propose the joint optimization of subcarrier, power, and artificial noise to achieve the higher security rate, our proposed method could approach to the upper bound of the security rate rather than the other methods, respectively. Then, in the simulation part, we present the theoretical and system-level simulation, and the results indicate that our proposed method could effectively increase the security rate without losing the system transmission speed.

Physical layer security in cognitive NOMA sensor networks with full-duplex technique

“…To improve the security issue, physical layer security (PLS) has been proposed as an alternative method to ensure the confidential information from eavesdropping, which has been widely investigated by scholars. [10][11][12] In this regard, we will primarily focus on the secrecy performance of physical layer in the context of an underlay CS-NOMA networks.…”