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Vegetation significantly affects radio signal attenuation, influenced by factors such as signal frequency, plant species, and foliage density. Existing attenuation models typically address specific scenarios, like single trees, rows of trees, or green spaces, with the ITU-R P.833 recommendation being a widely recognized standard. Most assessments f...
Contexts in source publication
Context 1
... analyze the scenario involving a single deciduous tree -a willow (Salix caprea) -which stands 4.3 m tall with a diameter of 3 m. Figure 1 illustrates the relative positions of the TX and RX during the measurements, highlighting the angles and distances between them, as well as the distances from both the TX and RX to the tree. The measurement testbed consisted of Xilinx Zynq UltraScale+ RFSoC ZCU111 boards, which transmitted the baseband signal and acquired the I and Q components. ...
Context 2
... FSPL is the free space path loss (FSPL(dB) = 20 log 10 (í µí±) + 20 log 10 (í µí±) + 20 log 10 ( 4í µí¼ í µí± )), where í µí± represents the distance between the TX and RX antennas, í µí± is the center frequency, and í µí± is the speed of light. í µí± í µí»¼≠21° = 15.61m, í µí± í µí»¼=21° = 13.80m (see Fig. ...
Context 3
... this paper, we analyze the selected measurement subscenario described in [22], i.e., for a tree with foliage. In this case, for each analyzed receiver position illustrated in Fig. 1, 1000 measurements of the channel impulse response (CIR) were performed. Based on them, we determined the received signal spectra and calculated their powers. The empirical cumulative distribution functions (ECDFs) of the relative received power for the individual receiver positions and maximum bandwidth (i.e., 1960 MHz) are shown in ...
