References: [1] Bouchet, Oliver., Sizum, Herve., Boisrobert, Christian., Foruel, Frederique de. (2010). Free-Space Optics: Propagation and Communications, John Wiley&Sons. [2] Roberto, Ramirez-Iniguez., Idrus, Sevia M., Sun, Ziran. (2008). Optical Wireless Communications - IR for Wireless Connectivity, CRC Press, An Auerbach book. [3] Nadeem, F., Javornik, T., Leitgeb, E., Kvicera, V., Kandus, G. (2010). Continental fog attenuation empirical relationship from measured visibility data, Radioengineering, 19, 596- 600, December. [4] Willebrand, Heinz, A., Ghuman, Baksheesh S. (2002). Free-Space Optics: Enabling Optical Connectivity in Today’s Networks, Indianapolis, Sams Publishing. [5] Kim, I., McArthur, B., Korevaar, E. (2001). Comparison of l aser beam propagation at 785 nm and 1550 nm in fog and haze for optical wireless communications, In: Proceedings of SPIE, 4214, 26-37. [6] Fischer, K., Witiw, M., Eisenberg, E. (2008). Optical attenuation in fog at a wavelength of 1.55 micrometers, Atmospheric Research, 87, 252-258, March. [7] Gebhart, J., M. Leitgeb, E. Bregenzer. (2003). Atmospheric effects on optical wireless links, in 7-th International Conference on Telecommunication, volume 2, p 395-401, Zagreb, 2003. [8] Al Naboulsi, M., Sizun, H. & de Fornel, F. (2004) Fog attenuation prediction for optical and infrared waves, Journal of SPIE. Optical Engineering, 43, 319–329 [DOI: 10.1117/1.1637611]. [9] Ijaz, M., Ghassemlooy, Z., Pesek, J., Fiser, O., Le Minh, H., Bentley, E. (2013) Modeling of fog and smoke attenuation in free space optical communications link under controlled laboratory conditions. Journal of Lightwave Technology, 31, 1720–1726 [DOI: 10.1109/JLT.2013.2257683]. [10] Khan, M., Awan, M., Leitgeb, E., Nadeem, F. & Hussain, I. (2009) Selecting a distribution function for optical attenuation in dense continental fog conditions, International Conference on Emerging Technologies, p 142–147. [11] Mitsev, Tsvetan., Dimitrov, Kalin, Ivanov, H. & Kolev, N. (2012). Optimum divergence of laser radiation in FSO systems, 7th International Conference on Communications, Electromagnetics and medical Applications (CEMA’12). Athens, pp. 42–45. [12] Mitsev, Ts., N. Kolev, Hr. Ivanov, K. Dimitrov, Optimum divergence of the transmitter optical radiation in FSO systems. Communication and Energy Systems and Technol. (ICEST 2012). Internal Scientific conference on Inform, Vol. XLVII. Veliko Tarnovo, Bulgaria, pp. 55–58. [13] Kovachev, Y. & Tsvetan Mitsev, F.S.O. (2014). Availability depending on the meteorological conditions, 9th International Conference on Communications, Electromagnetics and Medical Applications (CEMA’14). Sofia, 19–23. [14] Mitsev, T. & Kolev, N. (2014). Optimal Divergence of Laser Beam in Optical Wireless Communication Systems, Elektrotechnica & Elektronica, Vol. 49, pp. 15–20. [15] Mitsev, T. Kovachev, Y. (2015) Availability of MFSO using optimal system parameters. Proceedings of the 14th Conference on Microwave Techniques ‘Comite 2015’, April 22–23, Pardubice, Czech Republic,, 131–134, ISBN 978-1- 4799-8121-2. [16] Ferdinandov, E. & Pachedjieva, B. (2005). (in Bulgarian). Probabilistic and Statistical Methods in Communications – Part I. Siela: Sofia. [17] Ferdinandov, E. (1981). (in Bulgarian) Laser radiation in Radio-technics, Sofia. Technical Series. |