Frequency range extension of path loss prediction formula for over-rooftops propagation in microwave band

This paper presents a frequency range extended path loss prediction formula based on the measurement results using multiple frequency bands from 0.8 to 8 GHz, where the BS antenna height is lower than the surrounding buildings. Although the lower and narrower frequency bands are assigned to the current cellular/mobile systems, the higher and wider frequency bands should be allocated to the future mobile systems for providing broadband multimedia wireless communications services. And the future mobile systems are assumed to be the multi-mode systems including the existing systems in the lower band. The proposed path loss prediction formula should be applicable to wider frequency range (from 0.8 to 8 GHz) and will be able to contribute to the cell design for the future mobile systems