naa a22 4500 510798675 CHVBK 20180411083345.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1167-z doi (NATIONALLICENCE)springer-10.1007/s11277-013-1167-z An Improved UTD Based Model for the Multiple Building Diffraction of Plane Waves in Urban Environments by Using Higher Order Diffraction Coefficients [Elektronische Daten] [Ali Tajvidy, Mohammad Pourmina, Mohammad Naser-Moghadasi, Afrooz Haghbin] This paper describes an improved model for multiple building diffraction modeling based on the uniform theory of diffraction. A well-known problem in conventional uniform theory of diffraction (CUTD) is multiple edge transition zone diffraction. Here, higher order diffracted fields are used in order to improve the result. Hence, we use higher order diffraction coefficients to improve a hybrid physical optics (PO)-CUTD model, the results show that the new model can correct errors of the PO-CUTD model. Therefore, the proposed model can find application in the development of theoretical models to predict more realistic path loss in urban environments, when multiple building diffraction is considered. Springer Science+Business Media New York, 2013 Higher order diffraction coefficient nationallicence Multiple edge Diffraction nationallicence PO nationallicence UTD nationallicence Tajvidy Ali Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Pourmina Mohammad Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Naser-Moghadasi Mohammad Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Haghbin Afrooz Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2577-2586 0929-6212 72:4<2577 2013 72 11277 https://doi.org/10.1007/s11277-013-1167-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1167-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tajvidy Ali Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 700 1- Pourmina Mohammad Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 700 1- Naser-Moghadasi Mohammad Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 700 1- Haghbin Afrooz Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2577-2586 0929-6212 72:4<2577 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer