Indoor diffraction for metallic walls

Recently, the continuous increased demand of wireless communication has created a need for the efficient use of the spectrum band. This demands accurate knowledge of the physical interaction that degrades the signal in the channel. The precise knowledge of multipath propagation, reflections, transmissions, diffraction, scattering, etc. allows implementing effective diverse techniques that reduce the degradation of the signal. We calculate the receiving power of an omnidirectional antenna with linear polarization into a rectangular room with metallic walls. Diffraction, and multipath propagation effects are considered in the model. In order to calculate the degradation of the signal for these kinds of interactions, we apply a rigorous solution of Maxwell´s equations for the diffracted fields, and the fields from the multipath propagation. The diffracted wave is obtained using the Sommerfeld solution.