Abstract
An important link in the analysis of communication systems is the communication channel modeling, especially in the two frequency bands of VHF and UHF. In this paper, based on the existing measured data, we have established a channel model that can be widely used in terrestrial scenarios in both VHF and UHF frequency bands. We set up this model to solve the problem that the channel model under a single scenario cannot meet the actual environmental requirements. Meanwhile, we improved and modified the Okumura-Hata model to be suitable for scenarios where the BS antenna height is less than 30 meters. In our analysis, we mainly discuss the large-scale fading and small-scale fading under the four scenarios of cities, mountains, jungles, and low altitude. The results show that the channel models under different scenarios greatly increase the universality and authenticity. The modeling results and experimental data are well-fitted and can be widely applied in engineering practice.
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