1. [1] J.M. Kahn and J.R. Barry: “Wireless infrared communications,” Proc. IEEE 85 (1997) 265 (DOI: 10.1109/5.554222).
2. [2] H.S. Chung, et al.: “Optical access technologies for 5G mobile communication networks,” 2017 IEEE Photonics Society Summer Topical Meeting Series (SUM) (2017) 39 (DOI: 10.1109/PHOSST.2017.8012640).
3. [3] K. Kim, et al.: “High speed and low latency passive optical network for 5G wireless systems,” J. Lightw. Technol. 37 (2019) 2873 (DOI: 10.1109/JLT.2018.2866805).
4. [4] J.P. Turkiewicz: “Optical transmission technologies for 5G networks,” 2019 21st International Conference on Transparent Optical Networks (ICTON) (2019) 1 (DOI: 10.1109/ICTON.2019.8840559).
5. [5] W. Boubakri, et al.: “An optical wireless communication based 5G architecture to enable smart city applications,” 2018 20th International Conference on Transparent Optical Networks (ICTON) (2018) 1 (DOI: 10.1109/ICTON.2018.8473657).