International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Review

Performance comparison of diversity techniques with Addictive White Gaussian Channel (AWGC) in free space optical communication (FSO) under atmospheric turbulence scenario

Ayeni O. O
  • Ayeni O. O
  • Department of Physics, Federal University of Technology Akure, Ondo State, Nigeria.
  • Search for this author on:
  • Google Scholar
Ojo J. S
  • Ojo J. S
  • Department of Physics, Federal University of Technology Akure, Ondo State, Nigeria.
  • Search for this author on:
  • Google Scholar
Owolawi P. A
  • Owolawi P. A
  • Department of Computer Systems Engineering, Tshwane University of Technology, Pretoria South Africa.
  • Search for this author on:
  • Google Scholar
Ajewole M. O
  • Ajewole M. O
  • Department of Physics, Federal University of Technology Akure, Ondo State, Nigeria.
  • Search for this author on:
  • Google Scholar


  •  Received: 17 June 2020
  •  Accepted: 21 January 2022
  •  Published: 31 January 2023

Abstract

The spatial diversity techniques are broken down and explained systematically along with its combination which includes Maximum Ratio Combining (MRC), Equal Gain Combining (EGC) and Simple Selection Combining (SC) under the influence of atmospheric-induced turbulence fading in Free Space Optical (FSO) communication. Diversity is a technique used to prevent or reduce multipath. Multipath is a phenomenon describing propagation that results in the signals reaching the antenna by two or more paths. There is an extreme difficulty for a transmitted signal to be detected by a receiver in a case of increased turbulence. This research provides a forum for the receiver with some forms of diversity. The validation of the recommended simulation is through Additive White Gaussian Channel without combiner of the same process. The results display that Maximum Ratio Combining (MRC) has the greatest mitigation level of fading in comparison with others. Consequently, where fading is more dominant like on a terrestrial FSO link, Maximum Ratio Combining (MRC) can be used. Overall, the findings suggest the capability of the model in mitigating atmospheric turbulence especially for the 5G wireless networks in the terrestrial link.

Key words: Free Space Optical Communication (FSO), Atmospheric Turbulence, Additive White Gaussian Channel (AWGC), Maximum Ratio Combining (MRC), Equal Gain Combining (EGC), Selection Combining (SC) and Additive White Gaussian Noise (AWGN).

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

Back to Vol. 18 No. 1
Back to articles
SUBSCRIBE TO RSS
SUBMIT MANUSCRIPT
CONFERENCES