1. Maccartney, G. R., T. S. Rappaport, S. Sun, and S. Deng, "Indoor office wideband millimeter-wave propagation measurements and channel models at 28 and 73 GHz for ultra-dense 5G wireless networks," IEEE Access, Vol. 3, 2388-2424, 2015, doi: 10.1109/ACCESS.2015.2486778. Google Scholar
2. Ndip, I., T. H. Le, O. Schwanitz, and K.-D. Lang, "A comparative analysis of 5G mmWave antenna arrays on different substrate technologies," 22nd International Microwave and Radar Conference (MIKON) 2018, 222-225, 2018. Google Scholar
3. Mao, C.-X., S. Gao, and Y. Wang, "Broadband high-gain beam-scanning antenna array for millimeter-wave applications," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 9, 4864-4868, 2017. Google Scholar
4. AL-Saif, H., M. Usman, M. T. Chughtai, and J. Nasir, "Compact ultra-wide band MIMO antenna system for lower 5G bands," Wireless Communications and Mobile Computing, Vol. 2018, Article ID 2396873, 6 pages, 2018, https://doi.org/10.1155/2018/2396873. Google Scholar
5. Matinmikko, M., M. Latva-aho, P. Ahokangas, and V. Seppänen, "On regulations for 5G: Micro licensing for locally operated networks," Telecommunications Policy, Vol. 42, No. 8, 622-635, 2018, ISSN 0308-5961, https://doi.org/10.1016/j.telpol.2017.09.004. Google Scholar
6. Marsden, R. and H.-M. Ihle, "Mechanisms to incentivise shared-use of spectrum," Telecommunications Policy, Vol. 42, No. 4, 315-322, 2018, ISSN 0308-5961, https://doi.org/10.1016/j.telpol.2017.07.001. Google Scholar
7. Dighriri, M., G. M. Lee, and T. Baker, "Measurement and classification of smart systems data traffic over 5G mobile networks," Technology for Smart Futures, M. Dastbaz, H. Arabnia, and B. Akhgar (eds.), Publisher Springer, Cham, 2018, ISBN 978-3-319-60136-6, https://doi.org/10.1007/978-3-319-60137-3_9. Google Scholar
8. Li, S., D. Xu, and S. Zhao, "5G internet of things: A survey," Journal of Industrial Information Integration, Vol. 10, 1-9, 2018, ISSN 2452-414X, https://doi.org/10.1016/j.jii.2018.01.005. Google Scholar
9. Wu, Y., K. Ding, B. Zhang, J. Li, D. Wu, and K. Wang, "Design of a compact UWB MIMO antenna without decoupling structure," International Journal of Antennas and Propagation, Vol. 2018, Article ID 9685029, 7 pages, 2018, https://doi.org/10.1155/2018/9685029. Google Scholar
10. Wang, F., Z. Duan, S. Li, Z.-L. Wang, and Y.-B. Gong, "Compact UWB MIMO antenna with metamaterial-inspired isolator," Progress In Electromagnetics Research C, Vol. 84, 61-74, 2018. Google Scholar
11. Wu, L., Y. Xia, X. Cao, and Z. Xu, "A miniaturized UWB-MIMO antenna with quadruple band-notched characteristics," International Journal of Microwave and Wireless Technologies, 1-8, 2018, doi:10.1017/S1759078718000508. Google Scholar
12. Usman, M., et al. "New compact dual polarised dipole antenna for MIMO communications," 2010 International ITG Workshop on Smart Antennas (WSA), 326-330, Bremen, 2010, doi: 10.1109/WSA.2010.5456429. Google Scholar
13. Malviya, L., R. Panigrahi, and M. Kartikeyan, "MIMO antennas with diversity and mutual coupling reduction techniques: A review," International Journal of Microwave and Wireless Technologies, Vol. 9, No. 8, 1763-1780, 2017, doi:10.1017/S1759078717000538. Google Scholar
14. Usman, M., R. A. Abd-Alhameed, and P. S. Excell, "Design considerations of MIMO antennas for mobile phones," PIERS Online, Vol. 4, No. 1, 121-125, 2008. Google Scholar
15. Hong, J.-K., "Performance analysis of dual-polarized massive MIMO system with human-care IoT devices for cellular networks," Journal of Sensors, Vol. 2018, Article ID 3604520, 8 pages, 2018, https://doi.org/10.1155/2018/3604520. Google Scholar
16. Jo, O., J. Kim, J. Yoon, D. Choi, and W. Hong, "Exploitation of dual-polarization diversity for 5G millimeter-wave MIMO beam-forming systems," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 12, 6646-6655, Dec. 2017, doi: 10.1109/TAP.2017.2761979. Google Scholar
17. Gao, C., X. Q. Li, W. J. Lu, and K. L. Wong, "Conceptual design and implementation of a four-element MIMO antenna system packaged within a metallic handset," Microw. Opt. Technol. Lett., Vol. 60, 436-444, 2018, https://doi.org/10.1002/mop.30978. Google Scholar
18. Al-Hadi, A. A., J. Ilvonen, R. Valkonen, and V. Viikari, "Eight-element antenna array for diversity and MIMO mobile terminal in LTE 3500 MHz band," Microw. Opt. Technol. Lett., Vol. 56, 1323-1327, 2014, doi:10.1002/mop.28316. Google Scholar
19. Li, Y., C. Sim, Y. Luo, and G. Yang, "12-port 5G massive MIMO antenna array in sub-6 GHz mobile handset for LTE bands 42/43/46 applications," IEEE Access, Vol. 6, 344-354, 2018, doi: 10.1109/ACCESS.2017.2763161. Google Scholar
20. Li, M., et al. "Eight-port orthogonally dual-polarized antenna array for 5G smartphone applications," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 9, 3820-3830, Sep. 2016, doi: 10.1109/TAP.2016.2583501. Google Scholar
21. Thomas, K. G. and M. Sreenivasan, "A simple ultrawideband planar rectangular printed antenna with band dispensation," IEEE Transactions on Antennas and Propagation, Vol. 58, 27-34, 2010. Google Scholar
22. Chandel, R., A. K. Gautam, and K. Rambabu, "Tapered fed compact UWB MIMO-diversity antenna with dual band-notched characteristics," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 4, 1677-1684, Apr. 2018, doi: 10.1109/TAP.2018.2803134. Google Scholar
23. "CST: Microwave Studio based on the finite integration technique,". Google Scholar
24. Zhang, S., K. Zhao, Z. Ying, and S. He, "Adaptive quad-element multi-wideband antenna array for user-effective LTE MIMO mobile terminals," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 8, 4275-4283, Aug. 2013, doi: 10.1109/TAP.2013.2260714. Google Scholar
25. Rasilainen, K., A. Lehtovuori, A. Boussada, and V. Viikari, "Carrier aggregation compatible MIMO antenna for LTE handset," Progress In Electromagnetics Research C, Vol. 78, 1-10, 2017. Google Scholar
26. Vaughan, R. G. and J. B. Andersen, "Antenna diversity in mobile communications," IEEE Transactions on Vehicular Technology, Vol. 36, 149-172, 1987. Google Scholar
27. Nasir, J., M. H. Jamaluddin, M. Khalily, M. R. Kamarudin, I. Ullah, and R. Selvaraju, "A reduced size dual port MIMO DRA with high isolation for 4G applications," International Journal of RF and Microwave Computer Aided Engineering, Vol. 25, 495-501, 2015. Google Scholar
28. Lee, W. C., Mobile Communications Engineering, McGraw-Hill Professional, 1982.
29. Rosengren, K. and P.-S. Kildal, "Radiation efficiency, correlation, diversity gain and capacity of a six-monopole antenna array for a MIMO system: Theory, simulation and measurement in reverberation chamber," IEE Proceedings-Microwaves, Antennas and Propagation, Vol. 152, 7-16, 2005. Google Scholar