Comparative BER Analysis of Free Space Optical System Using Wavelength Diversity over Exponentiated Weibull Channel

• Autorzy: Shah Dhaval , Joshi Hardik , Kothari Dilipkumar

Identyfikatory

DOI

10.24425/ijet.2021.137860

• Języki publikacji: EN

Abstrakty

EN

Atmospheric turbulence is considered as major threat to Free Space Optical (FSO) communication as it causes irradiance and phase fluctuations of the transmitted signal which degrade the performance of FSO system. Wavelength diversity is one of the techniques to mitigate these effects. In this paper, the wavelength diversity technique is applied to FSO system to improve the performance under different turbulence conditions which are modeled using Exponentiated Weibull (EW) channel. In this technique, the data was communicated through 1.55 µm, 1.31 µm, and 0.85 µm carrier wavelengths. Optimal Combining (OC) scheme has been considered to receive the signals at receiver. Mathematical equation for average BER is derived for wavelength diversity based FSO system. Results are obtained for the different link length under different turbulence conditions. The obtained average BER results for different turbulence conditions characterized by EW channel is compared with the published result of average BER for different turbulence which is presented by classical channel model. A comparative BER analysis shows that maximum advantage of wavelength diversity technique is obtained when different turbulence conditions are modeled by EW channel.

Słowa kluczowe

EN

bit error rate; exponentiated weibull distribution; free space optics; FSO; wavelingth diversity; optimal combining

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2021
• Tom: Vol. 67, No. 4
• Strony: 665--672
• Opis fizyczny: Bibliogr. 27 poz., tab., wykr.

Twórcy

autor

Shah Dhaval

• Faculty of Electronics and Communication Engineering, Institute of Technology, Nirma University, Ahmedabad, India

autor

Joshi Hardik

• Faculty of Electronics and Communication Engineering, Institute of Technology, Nirma University, Ahmedabad, India

autor

Kothari Dilipkumar

• Faculty of Electronics and Communication Engineering, Institute of Technology, Nirma University, Ahmedabad, India

Bibliografia

• [1] V. W. S. Chan, “Free-Space Optical Communications,” J. Light. Technol., vol. 24, no. 12, pp. 4750–4762, dec 2006, doi: 10.1109/JLT.2006.885252
• [2] R. S. Lawrence and J. W. Strohbehn, “A survey of clear-air propagation effects relevant to optical communications,” Proc. IEEE, vol. 58, no. 10, pp. 1523–1545, 1970, doi: 10.1109/PROC.1970.7977
• [3] J. Schuster, “Free space optics technology overview,” a Present., 2002.
• [4] H. A. Fadhil, A. Amphawan, H. A. B. Shamsuddin, T. H. Abd, H. M. R. Al-Khafaji, S. A. Aljunid, and N. Ahmed, “Optimization of free space optics parameters: An optimum solution for bad weather conditions,” Opt. J. Light Electron Opt., vol. 124, no. 19, pp. 3969–3973, 2013, doi: 10.1016/j.ijleo.2012.11.059
• [5] E. Wainright, H. H. Refai, and J. J. Sluss Jr, “Wavelength diversity in free-space optics to alleviate fog effects,” in Free. Laser Commun. Technol. XVII, vol. 5712. International Society for Optics and Photonics, 2005, pp. 110–118, doi: 10.1117/12.591193
• [6] L. C. Andrews, R. L. Phillips, C. Y. Hopen, and M. A. Al-Habash, “Theory of optical scintillation,” JOSA A, vol. 16, no. 6, pp. 1417–1429, 1999, doi: 10.1364/JOSAA.16.001417
• [7] H. Henniger and O. Wilfert, “An Introduction to Free-space Optical Communications.” Radioengineering, vol. 19, no. 2, 2010.
• [8] H. Moradi, M. Falahpour, H. H. Refai, P. G. LoPresti, and M. Atiquzzaman, “BER analysis of optical wireless signals through lognormal fading channels with perfect CSI,” in 2010 17th Int. Conf. Telecommun. IEEE, 2010, pp. 493–497, doi: 10.1109/ICTEL.2010.5478870
• [9] M. Uysal and J. Li, “Error rate performance of coded free-space optical links over gamma-gamma turbulence,” in 2004 IEEE Int. Conf. Commun. (IEEE Cat. No. 04CH37577), vol. 6. IEEE, 2004, pp. 3331–3335, doi: 10.1109/ICC.2004.1313162
• [10] H. E. Nistazakis, V. D. Assimakopoulos, and G. S. Tombras, “Performance estimation of free space optical links over negative exponential atmospheric turbulence channels,” Opt. J. Light Electron Opt., vol. 122, no. 24, pp. 2191–2194, 2011, doi: https://doi.org/10.1016/j.ijleo.2011.01.013
• [11] M. Uysal, S. M. Navidpour, and J. Li, “Error rate performance of coded free-space optical links over strong turbulence channels,” IEEE Commun. Lett., vol. 8, no. 10, pp. 635–637, 2004, doi: 10.1109/LCOMM.2004.835306
• [12] R. Barrios and F. Dios, “Exponentiated weibull distribution family under aperture averaging for gaussian beam waves,” Optics express, vol. 20, no. 12, pp. 13 055–13 064, 2012, doi: 10.1364/OE.20.013055
• [13] L. M. Wasiczko and C. C. Davis, “Aperture averaging of optical scintillations in the atmosphere: experimental results,” in Atmos. Propag. II, vol. 5793. International Society for Optics and Photonics, 2005, pp. 197–208, doi: 10.1117/12.606020
• [14] P. R. Barbier, D. W. Rush, M. L. Plett, and P. Polak-Dingels, “Performance improvement of a laser communication link incorporating adaptive optics,” in Artif. Turbul. Imaging Wave Propag., vol. 3432. International Society for Optics and Photonics, 1998, pp. 93–102, doi: 10.1117/12.327974
• [15] J. A. Anguita, I. B. Djordjevic, M. A. Neifeld, and B. V. Vasic, “High-rate error-correction codes for the optical atmospheric channel,” in Free. Laser Commun. V, vol. 5892. International Society for Optics and Photonics, 2005, p. 58920V, doi: 10.1117/12.615760
• [16] S. S. Muhammad, T. Javornik, I. Jelovcan, E. Leitgeb, and O. Koudelka, “Reed solomon coded PPM for terrestrial FSO links,” in 2007 Int. Conf. Electr. Eng. IEEE, 2007, pp. 1–5, doi: 10.1109/ICEE.2007.4287281
• [17] D. Shah and D. K. Kothari, “BER Performance of FSO link under strong turbulence with different Coding Techniques,” IJCSC, vol. 8, pp. 4–9, 2015, doi: 10.031206/IJCSC.2016.002
• [18] H. E. Nistazakis and G. S. Tombras, “On the use of wavelength and time diversity in optical wireless communication systems over gamma– gamma turbulence channels,” Optics & laser technology, vol. 44, no. 7, pp. 2088–2094, 2012, doi: 10.1016/j.optlastec.2012.03.021
• [19] D. Shah, D. K. Kothari, and A. K. Ghosh, “Bit error rate analysis of the K channel using wavelength diversity,” Opt. Eng., vol. 56, no. 5, p. 56106, 2017, doi: 10.1117/1.OE.56.5.056106
• [20] T. A. Tsiftsis, H. G. Sandalidis, G. K. Karagiannidis, and M. Uysal, “Optical wireless links with spatial diversity over strong atmospheric turbulence channels,” IEEE Trans. Wirel. Commun., vol. 8, no. 2, pp. 951–957, 2009, doi: 10.1109/TWC.2009.071318
• [21] D. Giggenbach, B. L. Wilkerson, H. Henniger, and N. Perlot, “Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel,” in Free. Laser Commun. VI, vol. 6304. International Society for Optics and Photonics, 2006, p. 63041H, doi: 10.1117/12.680924
• [22] M. M. Ibrahim and A. M. Ibrahim, “Performance analysis of optical receivers with space diversity reception,” IEE Proceedings-Communications, vol. 143, no. 6, pp. 369–372, 1996, doi: ip-com: 19960885
• [23] K. P. Peppas, F. Lazarakis, A. Alexandridis, and K. Dangakis, “Simple, accurate formula for the average bit error probability of multiple-input multiple-output free-space optical links over negative exponential turbulence channels,” Opt. Lett., vol. 37, no. 15, pp. 3243–3245, 2012, doi: 10.1364/OL.37.003243
• [24] R. R. Parenti and R. J. Sasiela, “Distribution models for optical scintillation due to atmospheric turbulence,” MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB, Tech. Rep., 2005.
• [25] S. Nadarajah and A. K. Gupta, “On the moments of the exponentiated Weibull distribution,” Commun. Stat. Methods, vol. 34, no. 2, pp. 253–256, 2005, doi: 10.1080/03610920509342418
• [26] M. Abramowitz and I. A. Stegun, “Handbook of Mathematical Functions 10th Printing with Corrections,” Natl. Bur. Stand. Appl. Math. Ser., vol. 55, 1972.
• [27] A. Goldsmith, Wireless communications. Cambridge university press, 2005.