# Comparison of Wave Propagation Results for Tx Height of 20m

The plots of the predicted received power for the transmitter height of 20m show the influence of the antenna pattern on the wave propagation computation. When comparing the different power plots, there are some differences visible concerning the main lobe and the side lobes.

Comparison | Polarization +45° | Polarization -45° | ||
---|---|---|---|---|

Measured 3D Pattern | Mean value [dB] | Standard deviation [dB] | Mean value [dB] | Standard deviation [dB] |

AM algorithm |
0.07 | 1.07 | 0.21 | 1.09 |

BI algorithm |
2.18 | 1.06 | 1.81 | 0.94 |

WBI algorithm |
0.55 | 0.91 | 0.68 | 0.98 |

HPI algorithm |
-0.51 | 0.85 | 0.51 | 0.93 |

The numerical evaluation of these differences is listed in the table above. According to this evaluation again the AM algorithm has the best performance (the smallest error with respect to the measured 3D antenna pattern). However, both the HPI and the WBI algorithm achieve nearly the same performance.