Implementation of C-PolSK Modulation in FSO Network and Analysis of its Atmospheric Performance

• Autorzy: Chattopadhyay Diptangshu , Bharti Manisha

Identyfikatory

DOI

10.26636/jtit.2019.136619

• Języki publikacji: EN

Abstrakty

EN

Free Space Optical (FSO) communication is a quickly developing technology that is designed to handle high data rates while maintaining a good quality factor (Q-factor). Many novel techniques have been implemented to cope with atmospheric attenuating factors, such as fog and rain. Here, we have introduced circular polarization shift keying (C-PolSK) modulation to produce a stable and uniform light beam. The plane of polarized light keeps rotating along with the propagation vector, which helps reduce phase variations and cross-channel effects. C-PolSK provides higher penetrating power and attenuation resistance over linear polarization shift keying (L-PolSK). Two different C-PolSK models have been proposed and graphical comparisons, relying on such parameters as Q-factor, transmission distance and inputoutput power, have been made. The cases of moderate fog and rain attenuation are taken to verify the model’s efficiency. Polarized light is split into two orthogonal components and then modulated using the Mach-Zehnder modulator. One of the models also employs the principle of orthogonal differential phase shifting. Eye diagrams have been provided to verify the bit error rate (BER). The orthogonal differential phase shifted C-PolSK model proves to be the most suitable implementation prototype.

Słowa kluczowe

EN

attenuation; bit error rate; circular polarization shift keying; quality factor

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2019
• Tom: nr 4
• Strony: 43--49
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Chattopadhyay Diptangshu

• Department of Electronics and Communication Engineering, Jalpaiguri Government Engineering College, Danguajhar, Jalpaiguri 735102, India

autor

Bharti Manisha

• Department of Electronics and Communication Engineering, National Institute of Technology Delhi, Sector A-7 Institutional Area, Narela, Delhi - 110040, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).