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Investigation of the range of signal under different atmospheric conditions in FSO communication employing spatial diversity

ANIL KUMAR RAO1, GAGANPREET KAUR2,* , HARDEEP SINGH3, RAVI KUMAR3

Affiliation

  1. Student of Engineeringin M.E (E.C.E) at Thapar Institute of Engineering and Technology, Patiala
  2. Assistant Professor E.C.E Deptt, Thapar Institute of Engineering and Technology, Patiala
  3. AssociateProfessor, E.C.E Deptt., Thapar Institute of Engineering and Technology, Patiala

Abstract

Transmission speed of free space optical communication (FSO) is in Giga bits per second with low complexity of the system. As these links depends on the atmospheric conditions only, so the signals get suffered from weather conditions. Moreover, when fading of the signal increases under weather conditions, then the efficiency gets reduced. In this work FSO communication under different atmospheric situations has been investigated using spatial diversity for communicating multi channels on FSO. Maximum communication ranges with 10dB/km, 20dB/km, 40dB/km, and 70dB/km attenuation of signal at 1550nm wavelength having data rate 10Gbps has been investigated at high input power of order of 10 W. We have analyzed the results in terms of Q-factor, BER and eye diagram. Results obtained indicate high Q-factor, minimum BER and clear eye diagrams. Results indicate at 1550 nm wavelength, the fading of signal is less through the atmospheric channel. In addition, absorption and scattering, the two main factors responsible for fading of signal, have been mitigated using the spatial diversity technique..

Keywords

FSO, Fading, Atmospheric conditions, Spatial diversity.

Submitted at: Aug. 4, 2022
Accepted at: June 9, 2023

Citation

ANIL KUMAR RAO, GAGANPREET KAUR, HARDEEP SINGH, RAVI KUMAR, Investigation of the range of signal under different atmospheric conditions in FSO communication employing spatial diversity, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 5-6, pp. 241-247 (2023)