@article {1007,
	title = {A Hybrid Beamforming Design for Massive MIMO LEO Satellite Communications },
	journal = {Frontiers in Space Technologies},
	volume = {2},
	year = {2021},
	issn = {2673-5075},
	doi = {10.3389/frspt.2021.696464},
	url = {https://www.frontiersin.org/articles/10.3389/frspt.2021.696464/full},
	author = {Joan Palacios and Nuria Gonz{\'a}lez-Prelcic and Carlos Mosquera and Takayuki Shimizu and Chang-Heng Wang}
}
