Characterisation of radio transmissions into and within buildings

Previously reported measurements of radio propagation into and within buildings at 900, 1800 and 2300 MHz, have established that the Rayleigh-plus-log-normal model can describe successfully the statistical distribution of the received signal within buildings. A multiple regression analysis method is used to predict the signal path loss encountered by radio transmissions into and within buildings at these frequencies. Statistical methods have also been used in order to determine the reliability of the prediction