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An accurate design of the fading margin in wireless communication networks requires good modeling of the relationship between the rain rate and the attenuation. In this paper, we discuss the effect of the wet antenna (WA) on the fading margin. We claim that this effect is not negligible in commercial $E$ -band (i.e., 60–90 GHz) technologies, where the microwave links are relatively short and the...
The results of a field trial conducted in Switzerland between September 2011 and June 2012 are presented. The goal of the trial was to investigate the benefit of adaptive modulation in a channel with strong frequency selective fading. It is found that the availability of the system using adaptive modulation follows the predictions of the ITU-R recommendations for a frequency selective channel. With...
This paper presents channel measurements and preliminary analyses from three 2x2 microwave Line-of-Sight Multi-Input Multi-Output (LOS-MIMO) outdoor test links, operating on 8 GHz and 32 GHz. The main focus is to study channel conditions and the effects of rain and clear-air fading. First, we address the diverse performance measures used in the trials. In particular we introduce the MIMO phase difference...
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