The document discusses the future of 5G communications, which presents both challenges and opportunities. Key points include: (1) 5G will utilize millimeter wave spectrum which provides huge amounts of available bandwidth but faces challenges like blockage and link budget issues; (2) massive MIMO and beamforming techniques can help overcome some of the mmWave challenges by providing improved capacity, reliability and interference resilience; and (3) open research questions remain around topics like interference management, spectrum utilization, and fundamental performance limits as 5G technologies continue to develop over the next few years.

1. The Future of 5G
Communications
challenging and promising
Mohamed Seif
Wireless Intelligent Network Center, Nile University
April 12, 2016

2. Motivation

3. Policy
• Please stop me if I go over the
time limit.
• Please stop me if I talk too fast.
• Please stop me if you have any
question.
3

4. 5G Technology from Samsung
Video
4

5. Usage Trends: 2005-2015
Applications are Hungry
5

6. Cooper's Law: Promising Foresight
”Capacity has doubled every 2.5 years for the
past 100 years”
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7. Why mmWave?
1
• Huge amount of spectrum available in
mmWave bands.
• Technology advances make mmWave
possible.
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8. Spectrum Chart: Sub 6 GHz Crowded
mmWave is Huge
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9. mmWave Applications
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10. mmWave Applications (cont'd)
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11. mmWave Applications (cont'd)
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12. mmWave Applications (cont'd)
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13. mmWave Applications (cont'd)
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14. 2020: The Future of Wireless Communications
Dense 14

15. 2020: The Future
Heterogeneous 15

16. Link Budget Analysis
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17. Link Budget Analysis
Problem!
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18. Blockage in mmWave
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19. Solution

20. 19

21. MIMO in Brief
MIMO provides more capacity, reliability,
and resilience to interference.
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22. MIMO in mmWave
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23. Proposed Architectures in 5G
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24. Channel Feedback for Digital Beamforming
Depends on the knowledge of channel
accurately and instantaneously
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25. Channel Feedback for Digital Beamforming
Depends on the knowledge of channel
accurately and instantaneously
Not always affordable!
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26. Analogor Directional Beamforming
Limited by the angle of resolution
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27. Sub 6 GHz vs mmWave
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28. Power Consumption
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29. Power Consumption (cont'd)
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30. Power Efficient Precoding Methods
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31. Power Efficient Precoding Methods (cont'd)
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32. Challenges

33. Data Traffic
Figure: Data Traffic Forecast by CISCO VNI
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34. Interference Barrier in Wireless
Figure: Interference in Heterogeneous Networks
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35. Spectrum Utility
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36. Spectrum Utility
Prediction
Our behavioral patterns are up to 93%
predictable - Google Instants
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37. Research Thrusts -- Big Picture
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38. Fundamental limit
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39. Research Leaders in 5G
Prof. Robert Heath
UT Austin
Prof. Jeffery Andrews
UT Austin
Prof. Giuseppe Caire
USC
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40. Thank You!

41. Questions?
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