A MIMO-Enabled Free Space Optical Link under Log-Normal Fading/Gamma-Gamma Channel: Exploring an Optimal Modulation Scheme

The technology of free-space optical communication (FSOC) systems has some distinctive merits compared to other technologies. Its use is extremely beneficial meet the exigencies telecommunications and wireless networks (OTWNs). However, since OTWNs transport a lot data, choice reliable modulation scheme highly crucial. To this end, focus paper an in-depth study Point-to-Point Optical Link (P2P-OL) system under FSOC-Multiple-Input Multiple-Output (MIMO) channel using optimal scheme. Furthermore, atmospheric turbulence (AT) effects over FSOC-MIMO are incorporated in proposed obtain substantial results. performance analysis test high-rate P2P-OL validated case that decreases significantly when AT gets strong regimes. Finally, uses Non-Return Zero Pulse Generator-Mach-Zehnder Modulator ((NRZPG-MZM)) scheme, which displays acceptable levels dust-fog meteorological environment LNF FSOC-9 × 9 with attenuation value 59.66 dB/km (i.e., max OSNR = 24.9 dB, min BER 1e − 09, Q-factor 6), whereas same G-G channel, 58.55 24.67 6).