Research on multi-color visible light communication system using RZ-4PAM signals with 67% duty cycleLinfang Yi, Yufeng Shao, Anrong Wang, Zhuang Wang, Jie Yang, Qiming Yang, Qing Tian, Ni Yu, Shuanfan Liu, Renjie Zuo, Jie Yuan, Yanlin Li, Peng Chen and Chong LiITM Web Conf., 45 (2022) 02003DOI: https://doi.org/10.1051/itmconf/20224502003