Characterization of propagation in an outdoor-to-indoor scenario at 780 MHz

In this paper, the results of outdoor-to-indoor multiple-input multiple-output (MIMO) channel measurements at 780 MHz are presented. The motivation for these measurements was to provide actual measurement data needed to extend the International Mobile Telecommunications -Advanced (IMT-A) channel models to the frequencies around 400 - 900 MHz. There are publications reporting measurement results for these frequencies, but the results for the outdoor-to-indoor propagation scenario are basically non-existing. The measurement results presented in this paper include path loss, shadow fading, delay spread, Ricean K-factor and angular spread. The cross-correlations between large scale parameters are also given. The path loss results were compared to two modified versions of COST 231 path loss model for building penetration loss. The comparison showed that the COST 231 path loss model with modified indoor and outdoor loss sections can be applied also to frequencies around 800 MHz with suitable parameter values.