Enhance the Performance of Free Space Optical (FSO) Communication due to Atmospheric Turbulence via the Dual Diffuser Modulation (DDM)

Abstract

This paper focus on mitigating the atmospheric turbulence effect in free space optical communication using dual diffuser modulation (DDM) technique. Phase screen diffuser located on transmitter create 'new' beam wave to propagate through turbulence more efficiently. This technique uses two transmitter and differential mode detection at the receiver. The numerical result show that the DDM produce better performance compare to conventional FSO that using intensity modulation/direct detection (IM/DD) for On-Off Keying Modulation (OOK). The reduction in the scintillation level also improve in DDM compare to conventional technique that using a perfectly coherence beam.

Analysis of the effect of BER and Q-factor on free space optical communication system using diverse wavelength technique

“…Nonetheless, FSO has various benefits to be shown. They are no licensing requirements for link utilization, absence of radio frequency radiation hazards, no need of road digging as in the case of optical fiber, wider bandwidths, and low power consumption [6][7][8]. FSO is affected by attenuation of the atmosphere caused by the unsteady weather conditions such as haze, rain, and fog.…”

Optimization FSO Performance Under Strong Turbulence Effect By Enhanced New Carrier Data Transmission Technique

“…The combination of all these effect will cause both the spatial and temporal experience random fluctuations in refractive index of the variability of element factor such as temperature, pressure and wind variations along the optical propagation path through the channel [2][3][4][5][6][7][8][9].…”