Joint Beamforming and RIS Optimization

Measurements obtained from RIS-assisted CF-MIMO experiments at the TUBS testbed. The setup integrates six RIS panels (16×16 elements, 5.8 GHz) controlled via Raspberry Pis and optimized jointly with distributed beamforming strategies. The data
include SINR, CQI, and throughput metrics, enabling performance evaluation of RIS-assisted and cascaded RIS configurations. The experiments aim to quantify coverage uniformity, signal quality gains, and the feasibility of chained RIS setups.