Journal
OPTIK
Volume 248, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.168129
Keywords
Atmospheric turbulence; Bit error rate; Free space optical communication; Signal to noise ratio; Gaussian Minimum shift keying modulation
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This paper investigates a free space optical communication system using a hybrid modulation technique in weak turbulence conditions. It derives the analytical average bit error rate and closed form expression of the hybrid modulation scheme, showing excellent agreement with simulation results.
In this paper, free space optical communication system (FSO) employing a hybrid modulation technique called pulse position modulation-Gaussian minimum shift keying (PPM-GMSK) technique, is investigated by considering log-normal as the channel fading statistics under weak turbulence. The analytical average bit error rate (ABER) and closed form expression of the proposed hybrid modulation scheme are derived. Simulation results depict the excellent agreement of the derived closed form expression with those obtained using Gauss-Hermite approximation and with the Monte Carlo simulations.
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