@misc{dreifuerst2023massive,
  title={Massive MIMO in 5G: How Beamforming, Codebooks, and Feedback Enable Larger Arrays},
  author={Ryan M. Dreifuerst and Robert W. Heath Jr},
  year={2023},
  eprint={2301.13390},
  archivePrefix={arXiv},
  primaryClass={eess.SP},
  url={https://arxiv.org/abs/2301.13390}
}