Research on Differences of Prediction Models Related to Land Mobile Communication

When the model of land mobile communication is used to predict the propagation loss, there are many models which can be applied to the same frequency band, How to determine the model closest to the actual propagation conditions is a problem that must be solved. In this paper, through the actual test of propagation loss, the comparison verifies several propagation models such as okumura-hata, ITU-R P.529-3, ITU-R P. 1546, etc., and obtains the optimal model applicable to the prediction of transmission loss in the measured region.