Joint Beamforming and Segmentation Optimization for Segmented RIS-Assisted Cell-Free mMIMO Systems Under Perfect and Imperfect CSI
The integration of reconfigurable intelligent surface (RIS) technology with cell-free massive MIMO (CF mMIMO) enhances wireless network sum-rate performance. This paper proposes a novel segmented RIS-assisted CF mMIMO architecture for downlink transmission, where RIS elements within each segment share a common reflecti...