A Novel Flexible LUT-Based Hierarchical Distribution Matcher for Rate Adaptable Probabilistic Constellation Shaping. - Zulin Liu 002; Yan Li 073; Jingwei Song; Kejia Xu; Yaning Sun; Jifang Qiu; Hongxiang Guo; Xiaobin Hong 001; Zhisheng Yang; Jian Wu 010 (OFC, 2025)