Table 1 ARIMA models adjusted for the input series

Received signal strength (dBm)

$Y_t=Y_{t-1}-\underset{\left(p<0.0001\right)}{0.534}{a}_{t-2}+a_{3t}$

Distance to the RBS (m)

$\left(1-\underset{\left(p<0.0001\right)}{0.967}B\right)\left(1-B\right)X_{1t}=\left(1-\underset{\left(p<0.0001\right)}{0.309}B-\underset{\left(p<0.0001\right)}{0.420}{B}^2\right)a_{1t}$

Distance between Buildings (m)

$\left(1-\underset{\left(p<0.0001\right)}{0.478}B\right)\left(1-B\right)X_{2t}=\left(1+\underset{\left(p<0.0001\right)}{0.916}B+=\underset{\left(p<0.0001\right)}{0.551}{B}^2\right)a_{2t}$

Height of the buildings (m)

$X_{3t}=\underset{\left(p<0.0001\right)}{5.382}+\underset{\left(p<0.0001\right)}{0.893}{a}_{3t-1}+a_{3t}$