2006
DOI: 10.5194/ars-4-345-2006
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Propagation models for high sites in urban areas

Abstract: Abstract. Analyses of results from commonly used propagation models applied to UMTS Ultra High Sites in urban environments are presented. Differences between predicted and measured values for a site in Nuernberg are calculated as a function of the distance between base station and mobile station and as a function of the angle of incidence. An assessment of the validity range of the different propagation models is done. Furthermore, an analysis of the accuracy of the classification of building data is presented. Show more

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Cited by 7 publications
(2 citation statements)
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“…11 demonstrates how GUPL model's accuracy compares against that of certain well-known cellular radio path loss models (not applicable to ground-to-ground communications) based on their reported accuracies. Note that the cumulative mean errors for the Okumura-Hata [28], COST-231 [28], Maciel-Xia-Bertoni [28], and Flatedge [28] models are derived from [28, Fig. 9] by averaging absolute values of mean errors across all of the settlement classes.…”
Section: Gupl Model's Parametersmentioning
confidence: 99%
“…11 demonstrates how GUPL model's accuracy compares against that of certain well-known cellular radio path loss models (not applicable to ground-to-ground communications) based on their reported accuracies. Note that the cumulative mean errors for the Okumura-Hata [28], COST-231 [28], Maciel-Xia-Bertoni [28], and Flatedge [28] models are derived from [28, Fig. 9] by averaging absolute values of mean errors across all of the settlement classes.…”
Section: Gupl Model's Parametersmentioning
confidence: 99%
“…Τα μοντέλα αυτά πολλές φορές συναντώνται στη βιβλιογραφία και ως ημιεμπειρικά, καθώς δέχονται ως δεδομένα, εκτός από τη συχνότητα, την απόσταση της ραδιοζεύξης, τα ύψη των κεραιών, την απόσταση και το ύψος του τελευταίου κτιρίου που απαιτούνται και στα καθαρά εμπειρικά μοντέλα, και την απόσταση από το πρώτο κτίριο, το μέσο ύψος του συνόλου των κτιρίων, τη μέση απόσταση μεταξύ τους και το πλάτος των δρόμων, προσομοιώνοντας υποτυπωδώς το κανάλι διάδοσης. Τα παραπάνω μοντέλα διάδοσης σε αστικό περιβάλλον έχουν συγκριθεί με μετρήσεις ως προς την ακρίβεια πρόβλεψής τους ενώ ο συνδυασμός τους μπορεί να οδηγήσει σε ακριβέστερα υβριδικά μοντέλα [Kuerner et al, 1996], [Hecker et al, 2006].…”
Section: βιβλιογραφική αναφοράunclassified