From Jan. 2019 to Dec. 2019, Dr Xi Chen worked at University of Bristol as a visiting student. Xi Chen was a Ph. D student at the Huazhong University of Science and Technology, China. His research mainly focused on the adaptive modulation and coding for short-reach multicarrier systems, such as orthogonal frequency division multiplexing (OFDM) and filter bank multicarrier (FBMC). Based on various flexible modulation and coding techniques including probabilistic shaping, time-domain hybrid QAM, FEC and precoding, he proposed several adaptive loading algorithms to enhance the capacity and flexibility of the transmission link, supporting the development of elastic optical networks. Now Dr Xi Chen is working in Huawei, China.