A modified UTD model for indoor propagation prediction

In this paper, a modified UTD model to predict the propagation channel parameters in indoor scenarios is presented. The model is based on the blueprint of the rooms for a transmitter and receiver located at the same room. It employs two plane views reference to the transmitter and the receiver, respectively and a new criteria adopting vector´s dot product to construct the visibility graph. To verify the model, comparisons between the simulation results and measurements available in literature are given. The numerical results show that the modified ray tracing model will be applied in complex indoor propagation environment and find all propagation paths from a transmitter to a receiver in a high degree of accuracy without redundant computation time