Abstract
Average Bit Error Rate at Signal Transmission with OOK Modulation Scheme in Different FSO Channels
Highlights
Continuous development of various wireless telecommunication system services leads to the need to study and improve their performance
The Average Bit Error Rate (ABER) analytical expressions for digital input signals, modulated with the On-Off Keying (OOK) modulation scheme, propagating in the Free Space Optical (FSO) channel modelled with Gamma-Gamma, Log-Normal, K, and I-K distributions are derived
Based on the obtained numerical results, it can be concluded for which lengths of the FSO link and level of atmospheric turbulence which distribution model provides the best results in terms of the signal transmission with the OOK modulation scheme applied
Summary
Continuous development of various wireless telecommunication system services leads to the need to study and improve their performance. The basic requirements that are present in the process of improving the performance of wireless telecommunication systems are: providing high transmission speeds, large channel capacity and as greater connection range as possible with the lowest possible bit error rate. It is resistant to electromagnetic perturbation and interference with adjacent channels, due to a well defined narrow signal beam without power attenuation. It provides a high level of safety [1, 3]. The atmospheric conditions impact on FSO systems is noticeable through phenomena such as: the beam spread, intensity fluctuation and signal phase, scintillation [4]. Some of them are: Gamma-Gamma, Log-Normal, Negative Exponential, K distribution, I-K distribution, IG distribution, DoubleWeibull, Exponentiated Weibull, and Double Generalized distribution [5]
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