First built models of Remotely Piloted Air System (RPAS) communication channels based
on Wideband Code Division Multiple Access (WCDMA) 3GPP Standard were designed. Base Station (BS) transmission
within the Radio Line of Sight (RLoS) and through the satellite using Beyond Radio Line of Sight (BRLoS) was
considered. The dependencies of the Bit Error Rate (BER) on the signal-noise ratio for different RPAS velocities
and WCDMA сhannel models were obtained. The dependences of the BER on the signal-noise ratio for different levels
of satellite transponder nonlinearity were studied. The dependence of the BER on the BS antenna diameter in case
of the transponder nonlinearity was analysed. The dependencies for satellite channel characteristics, first
obtained taking into account the motion of the RPAS, make it possible to predict the behavior of the communication
system in critical conditions.
MIMO Channel Characteristics in Line-of-Sight Environments
