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Global System for Mobile Communications (GSM) is currently one of the most widely and most demanding telecommunication applications in the world. Researchers have reported that radiation from base stations may be dangerous to public health and that some human diseases are related to RF fleld exposure. Considering that in the past almost all the EM radiation assessments were focused on the Maximum transmission power of base station, and no statistical analyses have been performed on transmitted power's variation with the tra-c. An accurate method for predicting electromagnetic (EM) radiation from GSM base stations is proposed in this paper. It is based on the Poisson distribution of GSM-transmitted signals to calculate GSM transmitted power at difierent time periods. The theoretical calculation data flts well with the measurement data. Measurement results conflrm that electromagnetic radiation varies with changing tra-c and power density at difierent times with varying tra-c strength is more accurate than implementing only maximum power (20W) calculation. In some occasion, maximal power density is about 6"W/cm 2 for 15m in rush hours, but minimum power density is only 0.03"W/cm 2 for 15m in idle hours.

ACCURATE METHOD TO ESTIMATE EM RADIATION FROM A GSM BASE STATION