Research Article
Narrow-Band Radio Propagation Prediction Based on a Highly Accurate Three-Dimensional Railway Environment Model
Table 6
The MSE and MAE comparison of the results including and excluding the 2nd-order components.
| | | RMSE (dB) | MAE (dB) |
| Curve A | 2nd order included | 3.41 | 2.91 | 2nd order excluded | 3.41 | 2.91 |
| Curve B | 2nd order included | 3.79 | 3.16 | 2nd order excluded | 3.79 | 3.16 |
| Curve C | 2nd order included | 4.14 | 3.31 | 2nd order excluded | 4.15 | 3.34 |
| Curve D | 2nd order included | 4.76 | 4.05 | 2nd order excluded | 4.75 | 4.04 |
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