@article{deeplearningbasedrischannelextrapolation,
  title = {Deep Learning Based RIS Channel Extrapolation with Element-grouping},
  author = {Shunbo Zhang and Shun Zhang and Feifei Gao and Jianpeng Ma and Octavia A. Dobre},
  year = {2021},
  eprint = {2105.06850},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.06850v1},
}