南京邮电大学学报（自然科学版）2024，Vol.44Issue(3)：8-16,9.DOI:10.14132/j.cnki.1673-5439.2024.03.002
毫米波通信系统中可重构智能表面辅助多用户信道估计方案
A reconfigurable intelligent surface assisted multi-user channel estimation scheme in millimeter wave communication systems
摘要
Abstract
In order to solve the channel estimation problem of cascade channels in multi-user millimeter wave communication systems assisted by reconfigurable intelligent surface(RIS),a new two-stage cascade channel estimation scheme based on compressed sensing(CS)is proposed.This scheme introduces the dual time scale property of cascade channel and row column sparse adjacent structure in the traditional compressed sensing channel estimation.Plus,the channel characteristics and the double structured orthogonal matching pursuit(DS-OMP)algorithm are used to save the pilot overhead and improve the accuracy and performance of the channel estimation.Through the simulation results,the influence of each parameter on the normalized mean square error(NMSE)of the proposed scheme is analyzed.Compared with the traditional channel estimation algorithm based on compressed sensing,the proposed scheme has better performance and less pilot overhead.关键词
可重构智能表面/信道估计/压缩感知/双时间尺度/行列稀疏邻近结构Key words
reconfigurable intelligent surface(RIS)/channel estimation/compressive sensing/two-timescale/row column sparse adjacent structure分类
信息技术与安全科学引用本文复制引用
陈发堂,蒋天宇,龚自豪..毫米波通信系统中可重构智能表面辅助多用户信道估计方案[J].南京邮电大学学报（自然科学版）,2024,44(3):8-16,9.基金项目
重庆市自然科学基金面上项目(cstc2021jcyj-msxmX0454)资助项目 （cstc2021jcyj-msxmX0454）
