engleski

THE IMPACT OF THE NOISE IN THE FIBERS TO VESSEL’S COMMUNICATIONS

Optical communications are widely spread in computer and integrated networks, LANs, WLANs, and Internet. These networks are present also aboard vessels of various types, from bulk carriers through cruisers to war ships. Although ships appear relatively small in length, considering e.g. losses per length of cables, actual length of all cables aboard is much longer. Hence, it would be interesting to see how AWGN and Rayleigh fading influence BER of ship’s communications. This paper presents such research with simulation results obtained in Simulink. A model of fiber optic communication channel has been developed in Simulink environment. Change of Doppler shift in range from 10 to 10000 results in BER change of 0.0082 or 0.85%. Change of SNR from 1 to 1000 results in change of BER of about 0.0011 or 0.11%. We can conclude that optical communication channel is very robust to noise in the communication channel in case of fiber optic cables.

Optical link; communication channel; BER; Rayleigh fading; AWGN

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