Improving FSO Link Performance using PolSK Modulation

Douatia Kone *

Mathematics Physics Chemistry, Universite Peleforo Gon Coulibaly, Korhogo, Cˆote d’Ivoire and Research and Technological Innovation Department, Ecole Sup´ erieure Africaine des Technologies de l’Information et de la Communication, Abidjan, Cˆote d’Ivoire.

Koffi Arnaud Kamenan

Mathematics Physics Chemistry, Universite Peleforo Gon Coulibaly, Korhogo, Cˆote d’Ivoire.

Aladji Kamagate

Mathematics Physics Chemistry, Universite Peleforo Gon Coulibaly, Korhogo, Cˆote d’Ivoire and Numerics and Mathematics Department, Agence Nationale de la Recherche, Paris, France.

*Author to whom correspondence should be addressed.


Abstract

Free Space Optical (FSO) communication systems are based on the use of infrared light to transmit information at high speed through the atmospheric channel. Their performance is therefore affected by the characteristics of the atmospheric channel. One of the most widely used methods of compensating for the effects of atmospheric factors is modulation.
The main aim of this research is to demonstrate the improvement in FSO link performance using PolSK modulation in a subtropical environment such as Cˆote d’Ivoire. The performance indicators considered are bit error rate, channel capacity, outage probability and energy efficiency. The mathematical expression of the evolution of each of these indicators as a function of the atmospheric parameters of our environment was determined using the gamma-gamma model. A numerical evaluation of the results obtained was carried out using Matlab software.

The results show that PolSK modulation offers the best results in terms of BER reduction, with a BER of the order of 10-11 for an SNR of 50dB, compared with BERs of 10-4 and 10-2 for BPSK and OOK modulations respectively. We obtain a probability of interruption of the order of 10-3 for PolSK modulation compared with 10-2 for BPSK modulation and 10-1 for OOK modulation. As for the channel capacity, we obtain the same value (4:1458bit/s) for PolSK and BPSK modulation compared with 3:8181bit/s for OOK modulation. BPSK modulation, on the other hand, stands out for its excellent energy efficiency.

Keywords: Atmospheric turbulence, BER, BPSK, channel capacity, FSO, gamma-gamma, modulation, OOK, PolSK, outage probability, SNR


How to Cite

Kone, Douatia, Koffi Arnaud Kamenan, and Aladji Kamagate. 2024. “Improving FSO Link Performance Using PolSK Modulation”. Physical Science International Journal 28 (3):24-40. https://doi.org/10.9734/psij/2024/v28i3829.

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References

Agrawal, Rajeev, Chandramani Kishore Singh, Ayush Goyal, eds. Advances in smart communication and imaging systems: Select proceedings of MedCom 2020. Springer Singapore, Imprint: Springer; 2021.

Aboelala, Omar, It Ee Lee, Gwo Chin Chung. A survey of hybrid free space optics (FSO) communication networks to achieve 5G connectivity for backhauling. Entropy. 2022;24(11):1573.

Majumdar, Arun K. Advanced free space optics (FSO): A systems approach. Springer. 2014;186.

Agarwal, Nihal, et al. Photonic-Based Front-Mid-Backhaul Access for 5G. Sustainable Communication Networks and Application: Proceedings of ICSCN 2021. Singapore: Springer Nature Singapore. 2022;347-358.

Jahid, Abu, Mohammed H Alsharif, Trevor J Hall. A contemporary survey on free space optical communication: Potentials, technical challenges, recent advances and research direction. Journal of Network and Computer Applications. 2022;200:103311.

Milanizadeh, Maziyar, et al. Separating arbitrary free-space beams with an integrated photonic processor. Light: Science and Applications. 2022;11.1:197.

Kazanskiy, Nikolay L, Muhammad A Butt, Svetlana N Khonina. Optical computing: Status and perspectives. Nanomaterials. 2022;12.13:2171.

Ali, Ekbal H Ali, Assel J. Mohammed. Simulation Design of Compensation Technique in FSO Communication System for PSK and ASK Modulation using Phase Shift and Filter of Delay under Atmospheric Turbulences; 2023.

Yasir, Sultan Mahmood, et al. Investigation of optimum FSO communication link using different modulation techniques under fog conditions. Heliyon. 2022;8.12.

Sharoar Jahan Choyon AKM, Ruhin Chowdhury. Performance comparison of free-space optical (FSO) communication link under OOK, BPSK, DPSK, QPSK and 8-PSK modulation formats in the presence of strong atmospheric turbulence. Journal of Optical Communications. 2020;0.

Elsayed, Ebrahim E, Bedir B Yousif. Performance evaluation and enhancement of the modified OOK based IM/DD techniques for hybrid fiber/FSO communication over WDM-PON systems. Optical and Quantum Electronics. 2020;52.9:385.

Kon´ e, Douatia, Niangoran Medard Mene, Aladji Kamagat´ e. Characterization of link for freespace terrestrial optical communications in cˆote d’ivoire. Sciences des Structures et de la mati`ere. 2024;7.2.

Elsayed, Ebrahim Eld, Bedir B Yousif, Mahmoud M Alzalabani. Performance enhancement of the power penalty in DWDM FSO communication using DPPM and OOK modulation. Optical and Quantum Electronics. 2018;50:1-36.

Elsayed, Ebrahim E, Bedir B Yousif. Performance enhancement of hybrid diversity for M-ary modified pulse-position modulation and spatial modulation of MIMO-FSO systems under the atmospheric turbulence effects with geometric spreading. Optical and Quantum Electronics. 2020;52.12:508.

Kaushal, Hemani VK Jain, Subrat Kar. Free space optical communication. New Delhi: Springer India; 2017.

Ghassemlooy, Zabih, Wasiu Popoola, Sujan Rajbhandari. Optical wireless communications: System and channel modelling with Matlab®. CRC press; 2019.

Andrews, Larry C, Ronald L Phillips. Laser beam propagation through random media. Laser Beam Propagation Through Random Media: Second Edition; 2005.

Bibi, Sannia, et al. A comprehensive survey of free-space optical communication–modulation schemes, advantages, challenges and mitigations. Journal of Optical Communications; 2023.

Kumar, Suresh, Payal Arora. Modeling C2 n by inclusion of rainfall parameter and validate modified log normal and gamma-gamma model on FSO communication link. Journal of Optical Communications. 2024;44.s1:s1803-s1809.

Alathwary, Wagdy A, Essam S. Altubaishi. Performance of coherent FSO systems with adaptive M-PSK modulation. Optics and Laser Technology. 2024;168:109990.15–18.

Liu Na, et al. Multi-aperture Coherent Digital Combining Based on Complex-valued MIMO 2N×2 Adaptive Equalizer for FSO Communication. Journal of Lightwave Technology; 2023.

Benbouzid, Amine Mohammed, Nabil Belghachem. Performance analysis of OOK and PPM modulation schemes in MIMO-FSO links under gamma-gamma atmospheric turbulence. Environmental Effects on Light Propagation and Adaptive Systems VI. SPIE 2023;12731.

Karpagarajesh G, et al. Investigation of digital video broadcasting application employing the modulation formats like QAM and PSK using OWC, FSO, and LOS-FSO channels. Alexandria Engineering Journal. 2022;61.1:647-657.

Jain, Piyush, et al. BER Analysis of PolSK Modulation for FSO communication system with generalized pointing error over double gg turbulence channel. International Conference on Advance Computing and Innovative Technologies in Engineering (ICACITE). IEEE; 2021.

Zhang, Jiliang, et al. Polarization shift keying (PolarSK): System scheme and performance analysis. IEEE Transactions on Vehicular Technology. 2017;66.11:10139-10155.

IS Gradstein, IM Ryzhik, Edition, Seventh. Table of Integrals, Series, and Prod- ucts; 2007.

The Wolfram Functions Site: Erfc functions. [Online] Available: http://functions.wolfram.com/PDF/Erfc.pdf, Last accessed 12 Aug 2023

The Wolfarm Functions Site: MeijerG functions. [Online] Available: http://functions.wolfram.com/PDF/MeijerG.pdf

Esmail MA, Fathallah H, Alouini MS. Outage probability analysis of FSO links over foggy channel. IEEE Photonics Journal. 2017 Feb 22;9(2):1-2.

Esmail MA, Fathallah H, Alouini MS. Outage probability analysis of FSO links over foggy channel. IEEE Photonics Journal. 2017;9(2):1-12.

Xu Z, Xu G, Zheng Z. BER and channel capacity performance of an FSO communication system over atmospheric turbulence with different types of noise. Sensors. 2021 May 15;21(10):3454.

Kon´ e, Douatia, Niangoran Medard M´en´ e, Aladji Kamagat´ e. FSO Transmission Link Performance Analysis for Enhancing Internet Infrastructure in Cˆote D’ivoire. Aficomm Synthese. 2023;1:24.

historique-m´ er ´eo. Available: https://www.historique-meteo.net/

Soro, Gneneyougo Emile, et al. Estimation des pluies journali `eres extr ˆemes sup´ erieures `a un seuil en climat tropical: Cas de la Cˆote d’Ivoire. Physio- G´eo. G´eographie physique et environnement. 2016;10:211-227.

Todorovi´c, Jelena, et al. Analysis of signal quality in FSO systems with PolSK modulation. Serbian Journal of Electrical Engineering. 2020;17.2:171- 186.

Pande, Tanuja, Shukla, Narendra Kumar. Comparison among OOK, BPSK, DPSK, and QPSK with turbulence in FSO links. Journal of Optical Communications; 2023. Available: https://doi.org/10.1515/joc-2021-0221

Sharma A, Kaur S. Performance evaluation and fog attenuation modelling of FSO link for hilly regions of India. Opt Quant Electron. 2021;53:697. Available:https://doi.org/10.1007/s11082-021- 03348-2

Prabu K, Cheepalli S, Kumar DS. Analysis of PolSK based FSO system using wavelength and time diversity over strong atmospheric turbulence with pointing errors. Optics Communications. 2014;324:318-323.

Wu, Hsiao-Wen, et al. A 448-Gb/s PAM4 FSO communication with polarization-multiplexing injection-locked VCSELs through 600 m freespace link. IEEE Access. 2020;8:28859-28866.

Yousif, Bedir Bedir, Ebrahim Eldesoky Elsayed. Performance enhancement of an orbital-angularmomentum- multiplexed free-space optical link under atmospheric turbulence effects using spatial-mode multiplexing and hybrid diversity based on adaptive MIMO equalization. IEEE access. 2019;7:84401-84412.

Elsayed EE, Kakati D, Singh M. et al. Design and analysis of a dense wavelength-division multiplexed integrated PON-FSO system using modified OOK/DPPM modulation schemes over atmospheric turbulences. Opt Quant Electron. 2022;54:768. Available: https://doi.org/10.1007/s11082-022- 04142-4

Brima, Abu Bakarr Sahr, Edwin Ataro, Aladji Kamagate. Performance enhancement of an FSO link using polarized quasi-diffuse transmitter. Heliyon. 2021;7.11.