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An Improved UTD Based Model for the Multiple Building Diffraction of Plane Waves in Urban Environments by Using Higher Order Diffraction Coefficients

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Abstract

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.

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Notes

  1. One explanation for long computation times when the number of edges turns out to be large is that the series in (3) will engage an enormous number of complex multiplications. The computation plan in [13] will reduce the number of complex multiplications significantly.

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Authors and Affiliations

  1. Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

    Ali Tajvidy, Mohammad Ali Pourmina, Mohammad Naser-Moghadasi & Afrooz Haghbin

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  1. Ali Tajvidy
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  2. Mohammad Ali Pourmina
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  3. Mohammad Naser-Moghadasi
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  4. Afrooz Haghbin
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Correspondence to Ali Tajvidy.

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Tajvidy, A., Pourmina, M.A., Naser-Moghadasi, M. et al. An Improved UTD Based Model for the Multiple Building Diffraction of Plane Waves in Urban Environments by Using Higher Order Diffraction Coefficients. Wireless Pers Commun 72, 2577–2586 (2013). https://doi.org/10.1007/s11277-013-1167-z

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