CICT Mobile has long been committed to the research and exploration of
engineering applications of 6G key technologies, and has made significant
progress in massive MIMO transmission technology based on RIS. The
millimeter-wave multi-stream massive MIMO transmitter platform based on RIS,
jointly developed by CICT Mobile and Peking University, utilizes RIS to form a
large-scale antenna array with flexible beam forming capability, which can
realize efficient data transmission with hybrid digital and analog multi-stream
beamforming.