1. Cisco visual networking index: global mobile data traffic forecast update, 2017–2022. White paper, Cisco public, February 2019.
https://s3.amazonaws.com/media.mediapost.com/uploads/CiscoForecast.pdf
2. Marzetta, T.L.: Noncooperative cellular wireless with unlimited numbers of base station antennas. IEEE Trans. Wirel. Commun. 9(11), 3590–3600 (2010)
3. Riadi, A., Boulouird, M., Hassani, M.M.: An overview of massive-MIMO in 5G wireless communications. In: Colloque International TELECOM 2017 & 10èmes JFMMA, EMI - Rabat, Morocco, Mai, pp. 10–12 (2017)
4. Belhabib, A., Boulouird, M., Hassani, M.M.: Mitigation techniques of pilot contamination in massive MIMO systems for 5G wireless communications: an overview. In: Colloque International TELECOM 2019 & 11èmes JFMMA, Saidia, Morocco, 12–14 June 2019
5. Wang, M., Wang, D.: Sum-rate of multi-user MIMO systems with multi-cell pilot contamination in correlated Rayleigh fading channel. Entropy 21(6), 573 (2019)