An Efficient Ray Validation Technique for Ray-Tracing in Urban Microcellular Environments

Abstract

Ray-tracing propagation models for urban microcellular environments become time consuming as the validation of higher order of ray interactions presents a significant computational overhead. This letter presents a time efficient ray validation algorithm for ray-tracing models. The model presented in this letter uses a pre-computed database of building faces that are completely or partially visible to each face and vertical edge of all the buildings in the radio environment. This database is used to readily validate the ray-segments between the transmitter and receiver. The validation results show considerable time saving over previous models.

Path Clustering for Radio Propagation Prediction With Moving Object in Indoor Environment

“…However, because of the long computation time required for ray-tracing calculations, more efficient computation is required to predict propagation environments considering moving objects, as repeated simulations are necessary [10,11,12,13]. Some studies introduced methods for extracting data from a preprocessed database for ray-tracing acceleration [14,15,16]. 3GPP Technical Report Release 14 is a hybrid channel model that combines a stochastic model with a ray tracing model [17].…”