Adjusting the Level of Detail in 3D Models for Wireless Channel Generation using Ray-Tracing

The usage of ray-tracing techniques alongside 3D models of the real-world environment offer one of the most accurate forms of communication channel modeling. However, as a downside, the complexity of the 3D environment can significantly impact the time consumption of channel modeling simulations. We investigate the trade-off between 3D simplification versus channel accuracy and time consumption by comparing the data obtained in experiments with three different simplified versions of the 3D scenario. This work uses the open-source software NVIDIA Sionna and the Normalized Mean Square Error (NMSE) for the channel modeling and the channel comparison, respectively.