Optical Beam Steerable and Flexible Data Rate Orthogonal Frequency Division Multiplexing Non-Orthogonal Multiple Access (OFDM-NOMA) Visible Light Communication. - Yin-He Jian; Chih-Chun Wang; Tzu-Chieh Wei; Ying-Kai Hong; Huang-Ming Chen; Chi-Wai Chow; Yang Liu 194; Chien-Hung Yeh (OFC, 2023)