Complex impulse response modeling for wideband channels

The foundations of a wideband site-specific radio propagation channel model is presented. The model consists in a combination of a deterministic and statistical parts. The deterministic part generates the channel profile taking into account the influence of the propagation environment and the antenna configuration once they have a strong impact on the channel impulse response while the statistical part is used to include the small scale variations of the amplitude and phase. The model is tapped-delay-line based and it is shown that the Rice distribution is adequate to model the fast variations of the amplitude of each tap being the respective parameters extracted from the deterministic modeling part. Moreover, a statistical phase distribution about the phase of the dominant multipath component in each time bin proves to be more appropriate than the uniform distribution. Due to the lack of experimental measurements, the results of the model are compared with results obtained with a ray-tracing tool, previously validated with measurements, and have shown the validity of the proposed model