Outdoor-to-Indoor and Indoor-to-Indoor Propagation Path Loss Modeling Using Smart 3D Ray Tracing Algorithm at 28 GHz mmWave

The goal of the article is to provide a radio propagation algorithm for an outdoor-to-indoor and indoor-to-indoor environment for 5G mmWave in a populated city. This work is done by simulating a smart 3D ray tracing algorithm in MATLAB. The research here is done by taking into account the 28 [GHz] operating frequency which is potential for 5G network. The received results are provided in form of path loss and received signal strength. The results obtained show that a moderate outdoor-to-indoor service can be provided at the above-mentioned frequency. Two indoor path loss models (WINNER II and ITU-R) are also compared here. The literature review provided here is sufficient enough to prove that there is still a huge gap between the conventional ray tracing methods. The proposed model here deals with radio propagations using speedy computations and efficient use of resources. The findings of this paper also include that the path loss is also dependent on the separation between transmitter and receiver, the structure of the building and number and type of the obstructions in the path of RF waves.