Generation of propagation attenuation time series

Robert Watson (Inventor), Duncan Hodges (Inventor)

Research output: Patent


As congestion increases in the X and Ku frequency bands an increasing number of communication systems are being designed using Ka and V frequency bands. However, at these higher frequencies the propagation impairments caused by meteorological phenomena (such as cloud, rain etc) become significant. The high levels of attenuation mean that a static fade margin is not practical and dynamic fade mitigation techniques must be used.
Described herein is a method for the generation of radiowave propagation time series using estimates of the meteorological environment from Numerical Weather Prediction (NWP) systems. The resulting time series are shown to exhibit the correct first and second order characteristics, as well as the correct spatial correlation. The long term statistics are shown to compare well to the long term cumulative distribution functions produced using ITU-R recommendation P618-8.
Original languageEnglish
Patent numberEP1763154
IPCH04B 7/185
Publication statusPublished - 14 Mar 2007


  • propagation forecasting model
  • propagation modelling


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