Space diversity – essential factor for the security of 5-th generation communications

  • 1 Faculty of Communications – Technical University - Sofia, Bulgaria


5-th generation mobile networks aim higher capacity than current 4G, allowing higher number of mobile broadband users per area unit, and allowing consumption of higher or unlimited data quantities in gigabyte per month and user. 5G research and development is extremely important for the security of the human society. 5 G will have applications not only in the army and the police, but in the public transport, video monitoring, Internet of Things (IoT) etc. aiming at lower cost, lower battery consumption and lower latency at GHz frequency bands (millimeter waves). The use of directional antennas and space diversity at these extremely high frequency bands will improve the secure work of such systems. SCP-RPSC (Spatial Correlation Processing – Random Phase Spread Coding) is an entirely new approach in the field of microwave antenna theory, developed by the author one decade before. Its applications in the future terrestrial, High Altitude Platform Systems and satellite 5 G communications is considered in the report. Block schemes and advantages of the proposals are given too.



  1. Niu Y., Y. Li, D. Jin, L. Su and A. Vasilakos, A Survey of Millimeter Wave Communications for 5 G – Opportunities and Challenges, Internet, N 150207228, 25.02.2015.
  2. Wikipedia, Antenna Diversity.
  3. Demirev, V., Spatial Correlated Radiocommunication Technologies – The Bulgarian Contribution for a Better World, Science. Business. Society, N 1, Issue 1, 2016, pp.18-21.
  4. Демирев В., Технологията SCP-RPSC в сканиращите антенни системи за спътникови комуникации, Трудове на Национална конференция “Телеком,16”, София, 27-28 Октомври 2016.
  5. Demirev, V., Application of SCP Technology in Global Navigation Satellite Systems, CEMA,12, Athens, Greece, 2012, pp.61-63.
  6. Demirev, V., Recent trends and future developments of SCP-RPSC High Altitude Platform Systems, Elektrotechnica & Elektronica E+E, № 1-2, 2015, pp.30-36.
  7. Demirev, V., SCP-RPSC WiMAX systems – the new approach for the next generation microwave access strategies, Caspian Telecoms,08, Istanbul, Turkey, 2008.

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