Research on the Rate of Devices-to-Devices Communication System based on Reconfigurable Intelligent Surface

Abstract

There are problems of interference between Devices-to-Devices (D2D) communication users and cellular users, mutual interference between D2D communication users, and environmental interference caused by the existence of environmental obstacles in the D2D communication system assisted by Reconfigurable Intelligent Surface (RIS). In order to solve the problems, an optimization algorithm aiming at maximizing the total rate of the system is proposed to maintain the high quality of services among cellular users and D2D communication. Simulation experiments show that the total system speed under the tabu search-successive convex approximation algorithm is improved by 56% compared with the phase shift optimization algorithm. The total system speed under the tabu search-successive convex approximation algorithm is improved by 21.2% compared with the power allocation algorithm.

Keywords

• d2d communication
• successive convex approximation algorithm
• phase shift optimization
• ris