In the present study, the performance of Over-Roof-Top (ORT) propagation models in dense urban environment is investigated. Based on a standard model for multiple knife-edge diffraction, several modifications aiming at improving its prediction capability are checked vs. measurements performed in the city of San Francisco in strongly non-line-of-sight (NLOS) locations where ORT is expected to be the dominant propagation mechanism. Results show that the standard ORT model generally overestimates attenuation, while a mean prediction error close to 0 dB and an error standard deviation of about 10 dB can be achieved including some modifications, even without modeling propagation off the vertical plane.
Vitucci, E., Fuschini, F., Barbiroli, M., Zoli, M., Degli-Esposti, V. (2018). A study on the performance of over-roof-top propagation models in dense urban environment. IET Conference Publications [10.1049/cp.2018.1259].
A study on the performance of over-roof-top propagation models in dense urban environment
Vitucci, E. M.
;Fuschini, F.;Barbiroli, M.;Zoli, M.;Degli-Esposti, V.
2018
Abstract
In the present study, the performance of Over-Roof-Top (ORT) propagation models in dense urban environment is investigated. Based on a standard model for multiple knife-edge diffraction, several modifications aiming at improving its prediction capability are checked vs. measurements performed in the city of San Francisco in strongly non-line-of-sight (NLOS) locations where ORT is expected to be the dominant propagation mechanism. Results show that the standard ORT model generally overestimates attenuation, while a mean prediction error close to 0 dB and an error standard deviation of about 10 dB can be achieved including some modifications, even without modeling propagation off the vertical plane.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
