Fade Dynamics Investigation applying Statistics of Fade Duration and Level Crossing Rate.pdf

PROCEEDINGS OF WORLD ACADEMY OF SCIENCE, ENGINEERING AND TECHNOLOGY VOLUME 7 AUGUST 2005 ISSN 1307-6884 Fade Dynamics Investigation applying Statistics of Fade Duration and Level Crossing Rate Balázs Héder, Róbert Singliar, and János Bitó Abstract—The impact of rain attenuation on wireless TABLE I PARAMETERS OF THE INVESTIGATED LINK communication signals is predominant because of the used high frequency (above 10 GHz). The knowledge of statistics of Links Site name Freq. Pol. Length Azimuth attenuation is very important for planning point-to-point microwave [GHz] [km] [deg] links operating in high frequency band. Describing the statistics of HU11 Kondorosi út 38 H 1.5 238.3 attenuation is possible for instance with fade duration or level crossing rate. In our examination we determine these statistics from II. FADE DURATION AND LEVEL CROSSING RATE one year measured data for a given microwave link, and we are going to make an attempt to transform the level crossing rate statistic to Fade duration and level crossing rate (LCR) are used to fade duration statistic. present dynamic, time-varying characteristics of the propagation channel [1]. Keywords—Rain Attenuation