@article{structuredmassiveaccessforscalablecell,
  title = {Structured Massive Access for Scalable Cell-Free Massive MIMO Systems},
  author = {Shuaifei Chen and Jiayi Zhang and Emil Björnson and Jing Zhang and Bo Ai},
  year = {2020},
  eprint = {2006.10275},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2006.10275v1},
}