Mobile Satellite Propagation Channels at Ka band for railway and highway environnement

The design and assessment of air interfaces for modern Land Mobile satellite systems between 1 and 20 GHz require the use of reference generative propagation channel models. The ITU-R Rec. P.681, based on the enhanced 2-state MIMO model, has been developed and validated thanks to several experimental datasets collected from 2 to 20 GHz in different environments and for various elevation angles. In [1], new measurements at 20 GHz have been performed, especially in railway and highway environments. This paper will present the results of the processing of the data collected in [1], and in particular the improvement of the ITU-R Rec. P.681 which will now handle railway and highway environments. Moreover, a discussion is done on the wideband behavior of satellite channel for such frequency.