Active 3D double-RIS-aided multi-user communications: two-timescale-based separate channel estimation via Bayesian learning

• Main Authors: Yang, Songjie, Lyu, Wanting, Xiu, Yue, Zhang, Zhongpei, Yuen, Chau
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Electrical and electronic engineering; Active Double-Reconfigurable Intelligent Surface; Multi-User Two-timescale Channel Estimation
• Online Access: https://hdl.handle.net/10356/172075
• Institution: Nanyang Technological University

Double-reconfigurable intelligent surface (RIS) is a promising technique, achieving a substantial gain improvement compared to single-RIS techniques. However, in double-RIS-aided systems, accurate channel estimation is more challenging than in single-RIS-aided systems. This work solves the problem o...