On the Modeling of Time Correlation Functions for Mobile-to-Mobile Fading Channels in Indoor Environments

This letter studies time correlation functions of mobile-to-mobile (M2M) fading channels, based on a measurement campaign carried out in an indoor environment at 2.48 GHz. The time correlation properties are characterized for different mobility patterns. In order to depict the time correlation properties, a general model for the time correlation function is given assuming a typical M2M propagation scenario, where some local scatterers are moving with random velocities and in random directions. Subsequently, for each measured type of mobility pattern, an analytical autocorrelation function is derived and successfully compared to the measurement data.