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Multipath effects due to rain at 30-50 GHz frequency communication links

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2 Author(s)
de Wolf, D.A. ; Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Ligthart, L.P.

This study makes predictions about signal degradation along terrestrial radio links, operated at wide bandwidth and 30-50-GHz frequencies, caused by inhomogeneities in fairly severe rain storms. While the line-of-sight path may experience moderate to severe attenuation, the real problem at hand is to estimate the effect of multipath via scatterings from rain drops on side paths. These longer-path contributions can cause pulse distortions and related high-bandwidth effects which are deleterious to the information content, even upon successful reception of attenuated signals. The results show that significant degradation of high-bandwidth signals accompanying attenuations of more than ~40 dB are possible under intermittent rainfall conditions

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Antennas and Propagation, IEEE Transactions on  (Volume:41 ,  Issue: 8 )