Link-Level Performance Comparison of Measurements and Indoor Channel Models at 26GHz

Abstract

In this paper, we compare the link-level performance of measurement-based channel models and existing channel models for indoor scenarios at 26 GHz. Path loss and power delay profile (PDP) measurements were used to create the measurement-based channel models. The comparison is based on the results of simulations that use the tapped delay line (TDL)-based channel models. We found that the existing models yield good approximations for simpler scenarios, such as a line-of-sight (LOS) transmission along a hallway or a transmission with an obstacle between the transmitter (Tx) and the receiver (Rx), However, the models fail to adequately predict the channel performance when a more complex scenario, i. e., another Tx in adjacent room, is considered. Furthermore, the difference between co-and cross-polarization is highlighted, with co-polarization demonstrating favorable channel characteristics. Our results demonstrate the need for more advanced channel models that consider the polarization and can accurately account for the additional losses incurred by the indoor environment, e. g., the additional attenuation of transmission through the walls.