数据采集与处理2026，Vol.41Issue(1)：259-271,13.DOI:10.16337/j.1004-9037.2026.01.018
有源RIS与DF中继协同辅助RSMA-MEC系统吞吐量最大化研究
Throughput Maximization of RSMA-MEC System Collaboratively Assisted by Ac-tive RIS and DF Relay
摘要
Abstract
To enhance the throughput of the mobile edge computing(MEC)system,this paper investigates a rate splitting multiple access(RSMA)-MEC system assisted by a collaborative combination of the active reconfigurable intelligent surface(RIS)and the decode-and-forward(DF)relay.In this system,the active RIS is deployed to improve the signal transmission condition,while the DF relay is employed to extend the communication range.Additionally,the RSMA protocol is utilized to enhance the spectrum efficiency in multi-user access scenario,and both the relay and the base station(BS)apply the successive interference cancellation technique to decode the transmitted signals.The interaction among these technological components requires a systematic approach to resource allocation and interference management.To fully exploit the potential gains of this composite architectural framework,an overall joint optimization across all key parameters is essential.To maximize the system throughput,the joint optimization problem involving the relay's decoding order and transmitting power,the BS's receiving beamforming and decoding order,the active RIS reflection coefficients,and the users'offloading strategies are investigated.An alternating optimization algorithm is proposed to obtain the suboptimal solution for the throughput maximization problem.Finally,numerical results validate that the collaborative assistance of the active RIS and the DF relay can effectively enhance the throughput performance of the RSMA-MEC system.关键词
可重构智能表面/解码转发中继/速率分割多址/移动边缘计算Key words
reconfigurable intelligent surface(RIS)/decode-and-forward(DF)relay/rate splitting multiple access(RSMA)/mobile edge computing(MEC)分类
信息技术与安全科学引用本文复制引用
李喆,吕斌,杨震..有源RIS与DF中继协同辅助RSMA-MEC系统吞吐量最大化研究[J].数据采集与处理,2026,41(1):259-271,13.基金项目
国家自然科学基金(62071242) （62071242）
江苏省研究生科研与实践创新计划(SJCX23_0258). National Natural Science Foundation of China(No.62071242) （SJCX23_0258）
Postgraduate Research&Practice Innovation Pro-gram of Jiangsu Province(No.SJCX23_0258). （No.SJCX23_0258）
