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Performance Analysis of a DPSK-based High-Speed Spectral-Efficient FSO System under Different Weather Conditions

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Title Performance Analysis of a DPSK-based High-Speed Spectral-Efficient FSO System under Different Weather Conditions
 
Creator Sinha, Shivaji
Kumar, Chakresh
 
Subject Atmospheric attenuation
Bit error rate (BER)
Dense wavelength division multiplexing (DWDM)
Differential phase shift keying (DPSK), Quality factor (Q)
 
Description 629-641
The Free-Space Optical (FSO) communication system has proven its capability to enhance spectral efficiency and
support high data rates owing to its large available bandwidth compared to other communication techniques. However, the
FSO-transmission link is highly sensitive to dynamic conditions such as atmospheric turbulence and weather conditions,
therefore, channel attenuation arises and the received optical signal is degraded and distorted at the receiver end. In this
paper, Dense Wavelength Division Multiplexing (DWDM) based (40 􀵈 10) Gb/s FSO system performance is demonstrated
over a maximum transmission link of 50–70 km with quality factor of Q = 16-4 in clear sky, condition whereas it is 0.1 km
to 4 km in fog to rain weather conditions for the BER range of 10􀬿􀬹 to 10􀬿􀬻. The novelty in this work is to achieve the
optimum link distance with acceptable BER using a spectrally efficient (DWDM channel spacing of 0.6 nm), high speed
advanced NRZ-DPSK (10 Gb/s) modulation format under very dense fog and rain weather conditions. Furthermore, an
EDFA pre-amplifier with a gain of 20 dB has been incorporated at the transmitter side to mitigate the impact of atmospheric
attenuation to achieve maximum transmission range of 70 km in clear sky conditions.
 
Date 2023-06-06T10:38:05Z
2023-06-06T10:38:05Z
2023-06
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/62010
https://doi.org/10.56042/jsir.v82i06.1796
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source JSIR Vol.82(06) [June 2023]