南京邮电大学学报（自然科学版）2025，Vol.45Issue(5)：23-30,8.DOI:10.14132/j.cnki.1673-5439.2025.05.003
子连接有源RIS辅助通信系统的波束成形设计
Beamforming design for sub-connected active RIS-assisted communication systems
摘要
Abstract
This paper proposes a precisely optimized sub-connected architecture to address the high power consumption and feedback-type self-interference issues in active fully-connected reconfigurable in-telligent surface(RIS)systems.In this architecture,multiple RIS elements share power amplifiers,and beamforming design is carried out using techniques such as fractional programming and alternating direc-tion method of multipliers.These can reduce the number of power amplifiers and lower power consumption.Further,a self-interference suppression mechanism is incorporated,and the optimization problem is sub-sequently solved using the sequential unconstrained minimization technique,which improves the system's stability and signal quality.Simulations show a 25.0%-33.3%energy efficiency gain with a 6.7%-7.4%rate reduction compared to the fully-connected architecture.Compared to existing sub-connected architec-tures,it achieves an 11.1%-14.2%improvement in energy efficiency and significantly reduces the im-pact of feedback-type self-interference,thereby validating its advantages in both energy efficiency and in-terference suppression.关键词
可重构智能表面/有源RIS/子连接架构/自干扰抑制Key words
reconfigurable intelligent surface(RIS)/active reconfigurable intelligent surface/sub-connected architecture/self-interference suppression分类
信息技术与安全科学引用本文复制引用
王丹,肖卓婷..子连接有源RIS辅助通信系统的波束成形设计[J].南京邮电大学学报（自然科学版）,2025,45(5):23-30,8.基金项目
重庆市自然科学基金创新发展联合基金(中国星网)(CSTB2023NSCQ-LZX0114)资助项目 （中国星网）
