Estimation of Electromagnetic Background Created by Equipment of Cellular Radio Networks in Urban Areas with High Spatial Density of Subscribers

The estimation of electromagnetic background level created by mobile and base stations of cellular communication networks on urban areas with high terrestrial density of subscribers (in places of their gathering) are made. Analysis was executed by behavior simulation of GSM cellular radio network fragment with use of three-dimensional multibeam model of radio wave propagation (X3D Ray model) and three-dimensional topological model of typical urban area fragment with buildings height of 6-20 m at mobile stations allocation inside and out of buildings. Results have been performed for different terrestrial density of subscribers and base stations antenna height. It is concluded that in places of cellular communications subscribers gathering mobile stations electromagnetic radiation can make essential contribution to the total electromagnetic background level created by cellular communication equipment and other electromagnetic radiation sources on business hours. In conditions of shading places of people gathering by buildings and at high level of intranetwork interference (poor intranetwork EMC) the electromagnetic background level created by mobile equipment can exceed maximum permissible level.