Efficient three-dimensional ray tracing and electromagnetic field intensity estimation algorithm for WLAN

The algorithm of three-dimensional ray tracing based on the principles of geometric optics, mirror image and geometric theory of diffraction is proposed. The algorithm is intended for analysis of electromagnetic waves propagation indoors. The distribution of WLAN signal intensity indoors is simulated using the proposed ways of calculation of the coverage area with account of direct, reflected and diffraction rays. It is shown that the use of the proposed algorithm is appropriate for the totality of the accuracy of obtained results and the required costs of computational resources.