Authors:
Peppino Fazio
1
;
2
;
Mauro Tropea
3
;
Miralem Mehic
2
;
4
;
Floriano De Rango
3
and
Miroslav Voznak
2
Affiliations:
1
Department of Molecular Sciences and Nanosystems, Ca’ Foscari University, Via Torino 155, 30172, Mestre (VE), Italy
;
2
VSB – Technical University of Ostrava, 17, Listopadu 2172/15, Ostrava, 70833, Czechia
;
3
Department DIMES, University of Calabria, via P. Bucci 39/C, Arcavacata di Rende (CS), 87036, Italy
;
4
Department of Telecommunications, Faculty of Electrical Engineering, University of Sarajevo, Zmaja od Bosne bb, Sarajevo, 71000, Bosnia and Herzegovina
Keyword(s):
Quantum Communications, FSO, Photon, SNR, BER, Laser, Optics, Channel Modeling.
Abstract:
Free Space Optics (FSO) represent a promising technology for secure communications in several types of architectures: from Quantum Key Distribution Networks (QKDNs) to satellite communications. In this paper, in particular, we take into account terrestrial point-to-point laser communications and evaluate the performance in terms of Signal-to-Noise Ratio (SNR) and Bit Error Rate (BER), taking into account different scenarios, that can reflect real situations in which long distances can be reached in a secure way, guaranteeing an acceptable level of BER. So, after a huge campaign of simulations, we would like to let the scientific community know which are the theoretical limits that such kind of communications can reach. We take into account standard telescopes parameters (available today in the market), while configuring several real situations, in function of, for example, bit-rate, visibility, link distance, etc. A brief survey of the existing works is given, then a clearer performa
nce evaluation of terrestrial FSO links is proposed.
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