TY - JOUR T1 - AI-Driven Channel State Information (CSI) Extrapolation for 6G: Current Situations, Challenges and Future Research JO - IEEE Communications Surveys & Tutorials UR - https://doi.org/10.1109/comst.2026.3652799 PY - 2026/01/01 AU - Gao Y AU - Lu Z AU - Wu X AU - Yu W AU - Liu S AU - Du J AU - Jin Y AU - Zhang S AU - Chu X AU - Xu S ED - DO - DOI: 10.1109/comst.2026.3652799 PB - Institute of Electrical and Electronics Engineers (IEEE) SP - 1 EP - 1 Y2 - 2026/01/24 ER -