Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS), capable of transmitting and reflecting incident signals, is an emerging technology for satellite communication (SatCom) systems to improve network capacity and support $360^{\circ}$ full-space coverage. This article studies the joint optimization of user scheduling and phase shift for multicast services in STAR-RIS-assisted SatCom systems. We establish a stochastic optimization problem with the objective of maximizing the average data rate with constraints for ensuring target quality-of-service (QoS). To solve the problem, an algorithm is developed that jointly finds the optimal user set, phase shift values, and energy splitting ratios based on a dual approach. From the simulation results, it is observed that the proposed algorithm substantially enhances system performance while satisfying the target QoS requirement.
Joint User Scheduling and Phase Shift Optimization for STAR-RIS-Assisted Multicast Satellite Communications
IEEE Transactions on Aerospace and Electronic Systems ; 60 , 5 ; 7466-7474
2024-10-01
1191215 byte
Article (Journal)
Electronic Resource
English
British Library Conference Proceedings | 2002
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