@article{reconfigurableintelligentsurfaceempowere,
  title = {Reconfigurable Intelligent Surface Empowered Over-the-Air Federated Edge Learning},
  author = {Hang Liu and Zehong Lin and Xiaojun Yuan and Ying-Jun Angela Zhang},
  year = {2021},
  eprint = {2109.02353},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.02353v2},
}