Spatio–Temporal Rain Attenuation Model for Application to Fade Mitigation Techniques

Modelling And Detection of Rain Attenuation For MF-TDMA Satellite Networks Utilizing Fade Mitigation Techniques

Whilst the ability to characterise the on-average monthly or yearly performance of systems without countermeasures is well determined, such methods are not efficient at Ka-band and above. Optimal fade mitigation technique design requires statistically and dynamically correct attenuation time-series. Optimal allocation of communication resources requires consideration of the channel statistics a...

Statistical Analysis of Rain Fade Slope

An analysis is made of the measured distributions of the fade slope of rain attenuation, conditional for attenuation values, measured at Eindhoven University of Technology from the satellite Olympus. It is found that the distribution is similar for positive and negative fade slopes and independent of frequency in the range from 12 to 30 GHz. A distribution model for the conditional distribution...

A LABORATORY SYSTEM FOR THE INVESTIGATION OF RAIN FADE COMPENSATION TECHNIQUES FOR Ka-BAND SATELLITES

The design and performance of a rain fade simulation! counteraction system on a laboratory simulated 30/20 GHz, time division multiple access (IDMA) satellite communications testbed is evaluated. Severe rain attenuation of electromagnetic radiation at 30/20 GHz occurs due to the carrier wavelength approaching the water droplet size. Rain in the downlink path lowers the signal power present at t...

Statistical Analysis of Rain Fade Slope

The fade slope is a stochastic parameter and varies with time. The probability distribution of fade slope can depend on attenuation, on the drop size distribution and therefore on the type of rain, and on the wind velocity perpendicular to the path. Furthermore, if several rain cells and/or different kinds of rain may be present, the fade slope is likely to decrease with path length, and theref...

Study to Assess the Impact of Fade Mitigation Techniques in Bands Above Around 20GHz – Final Report