Analysis of the Characteristics of Wave Propagation by Indoor Wireless Communication

Abstract

In this paper the analysis of features of propagation of waves in wireless communication systems in the internal area of the premises. In the experiment, was considered the process of propagation of electromagnetic waves through a concrete and brick barriers (ceilings and floors). This recommendations for the approximation of the obtained data based on the method of least squares. The degree of the polynomial was chosen not more than 10, with an error of no more than 10 %. Was conducted changing the settings, signal levels and transmission speeds when I change the power of the broadcast data against the 100 %, 50 %, 25 % of the power transmission de-vice, the transmission speed has not changed. For conditions, when radio waves propagate over barriers in the internal area of the premises in the course of the experiment were carried out considering these options: access point and laptop are separated by a plaster wall, the access point and laptop are separated by a plaster wall and wooden wardrobe, access point and laptop are separated by two brick and one plaster wall, and wooden wardrobe. On the basis of the relevant wave propagation through obstacles at varying values of the variables involving optimization techniques were determined the values of the indexes of refraction of the materials. The offered structure of subsystem of information processing in the study of radio wave propagation in the room. As input sizes are internal areas of the premises, the values of dielectric and magnetic materials fields. The results can be useful in the design of wireless communication systems, determining the areas within the premises, which achieves a high signal value.