**Chapter 2**

*Cyberspace*

01 January 2020]

ems/02\_anatomy

25 December 2019]

[19] Rajiv. What are small cells in 5G technology. RF Page [Online]. 2018. Available from: https://www.rfpage.com/

what-are-small-cells-in-5g-technology/

[21] Ahmed I, Khammari H, Shahid A, Musa A, Kim KS, Poorter ED, et al. A survey on hybrid beamforming techniques in 5G: Architecture and system model perspectives. IEEE Communication Surveys and Tutorials.

[22] Ahmed I, Khammari H, Shahid A. Resource allocation for transmit hybrid beamforming in decoupled millimeter wave multiuser-MIMO downlink. IEEE

2018;**20**(4):3060-3097

Access. 2017;**5**:170-182

[23] Ali E, Ismail M, Nordin R, Abdulah N. Beamforming techniques

[20] Ericsson. Beamforming, from cell-centric to user-centric. Ericsson [Online]. 2019. Available from: https:// www.ericsson.com/en/networks/ trending/hot-topics/5g-radio-access/ beamforming [Accessed: 25 December

[16] Bushell-Embling D. 32 countries agree on 5G security guidelines. telecomasia.net [Online]. 2019. Available from: https://www.

for massive MIMO systems in 5G: Overview, classification, and trends for future research. Frontiers of Information Technology & Electronic Engineering. 2017;**18**(6):753-772

[24] Clement J. Worldwide mobile app revenues in 2014 to 2023 (in billion U.S. dollars). Statista [Online]. 2019. Available from: https://www.statista. com/statistics/269025/worldwidemobile-app-revenue-forecast/

[25] SK Telecom Continues to Protect its 5G Network with Quantum Cryptography Technologies, IDQ [Online]. 2019. Available from: https://www.idquantique.com/

sk-telecom-continues-to-protect-its-5gnetwork-with-quantum-cryptographytechnologies/ [Accessed: 01 January

2020]

telecomasia.net/content/32-countriesagree-5g-security-guidelines [Accessed:

[17] Science Mission Directorate. Anatomy of an Electromagnetic Wave. National Aeronautics and Space Administration [Online]. 2010. Available from: http://science.nasa.gov/

[18] Nordrum A, Clark K. Everything You Need to Know About 5G. IEEE Spectrum [Online]. 2017. Available from: https://spectrum.ieee.org/video/ telecom/wireless/everything-youneed-to-know-about-5g [Accessed:

**12**

2019]
