重庆邮电大学学报（自然科学版）2026，Vol.38Issue(1)：39-48,10.DOI:10.3979/j.issn.1673-825X.202501140016
自持续IRS辅助速率拆分多址系统的资源分配方案
Resource allocation scheme for self-sustainable IRS-assisted rate-splitting multiple access systems
摘要
Abstract
To enhance the deployment flexibility of intelligent reflecting surfaces(IRSs)in rate-splitting multiple access(RSMA)systems and improve the energy efficiency of RSMA,a self-sustainable IRS-assisted RSMA downlink system model is established.With the objective of maximizing system energy efficiency,a joint optimization problem involving rate allocation,beamforming,mode selection,and discrete phase shifts is formulated under energy harvesting constraints and discrete phase-shift constraints.The original problem is decomposed into two subproblems,which are solved alternately in an iterative manner until convergence.For the rate allocation and beamforming subproblem,semidefinite relaxation(SDR),successive convex approximation(SCA),and the Dinkelbach algorithm are employed.For the mode selection and discrete phase-shift subproblem,the SCA algorithm and the penalty function method are adopted.Simulation results demon-strate that,compared with baseline schemes,the proposed optimization scheme achieves superior performance.关键词
智能反射面/速率拆分多址/离散相移/自持续智能反射面Key words
intelligent reflecting surface/rate-splitting multiple access/discrete phase shift/self-sustainable IRS分类
信息技术与安全科学引用本文复制引用
赵新宇,唐菁敏,宋耀莲..自持续IRS辅助速率拆分多址系统的资源分配方案[J].重庆邮电大学学报（自然科学版）,2026,38(1):39-48,10.基金项目
国家自然科学基金项目(62261056) National Natural Science Foundation of China(62261056) （62261056）
