聊城大学学报（自然科学版）2026，Vol.39Issue(2)：217-223,7.DOI:10.19728/j.issn1672-6634.2025070002
RIS辅助反向散射通信信道估计与相移优化算法
Channel estimation and phase-shift optimization for RIS-assisted backscatter communication
摘要
Abstract
Backscatter communication(BackCom),as a potential key technology for next-generation low-power Internet of Things(IoT)networks,has garnered significant attention due to low-power wireless in-formation and power transfer.The performance enhancement of BackCom is limited by the dual-channel fading effects.To this end,this paper proposes a linear minimum mean square error-based channel estima-tion and phase-shift optimization algorithm.Then,the channel models of both direct links and the casca-ded links are established,where a closed-form estimator is designed by utilizing channel statistical charac-teristics.Meanwhile,the phase shift matrix of RIS is optimized in a low computational complexity way.Simulation results validate the superiority of the proposed scheme in the channel estimation accuracy com-pared to the benchmark schemes.关键词
反向散射通信/智能反射面/信道估计Key words
backscatter communication/reconfigurable reflecting surface/channel estimation分类
信息技术与安全科学引用本文复制引用
邱友静,徐勇军,唐鹏..RIS辅助反向散射通信信道估计与相移优化算法[J].聊城大学学报（自然科学版）,2026,39(2):217-223,7.基金项目
国家自然科学基金项目(62271094)资助 （62271094）
