Integrated Optimization Algorithm for Secrecy Rate Improvement in UAV-RIS enabled System

Unmanned aerial vehicles(UAVs) and reconfigurable intelligent surfaces (RISs) have recently received considerable research attention in the fields of 5G and 6G wireless commumication owing to their high flexibility and low hardware costs. Therefore, we introduce a penalty-based successive convex approximation algorithm and a minorization-maximization algorithm to optimize the transmission beamforming vector, RIS beamforming vector, and VAV-RIS trajectory with the aim of improving the physical layer security performance of wireless communication systems using VA Vs and RISs. As a result of performance analysis through simulation, the superiority of the proposed algorithm was confirmed in terms of system security performance.