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Weather effects on hybrid FSO/RF communication link

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6 Author(s)
Nadeem, F. ; Inst. for Broadband Commun., Graz Univ. of Technol., Graz, Austria ; Kvicera, V. ; Awan, M.S. ; Leitgeb, E.
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Free space optics (FSO) or optical wireless systems provide high data rate solution for bandwidth hungry communication applications. Carrier class availability is a necessity for wide scale acceptability which is extremely difficult to achieve in the case of optical wireless links. FSO links are highly weather-dependent and different weather effects reduce the link availability. Employing a hybrid network consisting of an FSO link and a back up link in the GHz frequency range renders high availability besides providing comparable data rates. In this paper effects of fog, rain and snow on FSO/GHz hybrid network are studied so that GHz frequencies with best complementary behaviour can be selected as a back up link. As a prime conclusion of the article, it is suggested that free space optical links can be supplemented with 40 GHz RF links to achieve near carrier class availability.

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Selected Areas in Communications, IEEE Journal on  (Volume:27 ,  Issue: 9 )