Authors: Petković, Milica
Đorđević, Goran T.
Makal, Jarosław
Marjanović, Zvezdan
Milovanović, Gradimir
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: Error Probability of a Coherent M-ary PSK FSO System Influenced by Phase Noise
Journal: Mathematics
Volume: 11
Issue: 1
First page: 121
Issue Date: 2023
Rank: ~M21a
ISSN: 2227-7390
DOI: 10.3390/math11010121
In this paper, we aim to develop an analytical framework for design and analysis of new generation mobile networks fronthaul/backhaul links based on the application of free-space optical (FSO) technology. Taking the receiver hardware imperfections into account, we present an efficient analytical approach in analyzing average symbol error probability (SEP) of the coherent FSO system employing M-ary phase-shift keying (PSK). Optical signal transmission is influenced by pointing errors and atmospheric turbulence. The signal intensity fluctuations caused by atmospheric turbulence are modeled by general Málaga ((Formula presented.)) distribution, which takes into account the effect of multiple scattered components. We estimate the range of the signal-to-noise ratio at which the SEP floor appears, as well as the value of this non-removable error floor. The results illustrate that the effect of imperfect phase error compensation on the SEP is more critical under weaker turbulence conditions and for higher order modulation formats. Based on the analytical tools presented here, it is possible to estimate tolerable value of standard deviation of phase noise for the given value of SEP. This value of standard deviation is an important parameter in designing the phase-locked loop filter in the receiver.
Keywords: atmospheric turbulence | error probability | free-space optics | phase noise | phase-shift keying
Publisher: MDPI

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