Abstract
In this paper an attempt is made to extend Hata's method for estimating path loss to cm and mm wave lengths using adaptive propagation techniques. Three adaptive propagation models are proposed applicable to urban and rural areas. The measurements reported in the literature at 9.6, 28.8 and 57.6 GHz are utilized to deduce the coefficients in the adaptive propagation models. Predicted results using the derived coefficients compare well with the experimental data. The results indicate adaptive propagation prediction technique can be used even up to mmw frequencies.
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