A Diffraction Ray Tracing Method Based on Curved Surface Ray Tube for Complex Environment
Keywords:
CSRT model, four-ray tube, radio wave propagation, ray tracingAbstract
A self-adaptive ray tracing method for predicting radio propagation based on the curved surface ray tube (CSRT) model is proposed in this paper. The CSRT model is implemented in the ray tracing method to reduce the unnecessary consume compared with the four-ray tube model in complex environments. Both the theoretical calculation and the practical simulation were applied to verify the high efficiency of the CSRT model. The radio wave propagation in a complex scene was calculated by the CSRT model and the four-ray tube model, and the theoretical analytical result demonstrated that the CSRT model achieved a speed up of 4 times compared to the four-ray tube model. Moreover, the wave propagations in several different environments were simulated with our developed software based on the CSRT and four-ray tube tracing method, and the comparisons of the simulation time spent by the two methods proved the high efficiency of the CSRT model. In addition, the correct prediction of the propagation paths and E-field also validates the accuracy of the CSRT model.
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H.-W. Son and N.-H. Myung, “A deterministic ray tube method for microcellular wave propagation prediction model,” IEEE Trans. Antennas Propagat., vol. 47, no. 8, pp. 1344-1350, 1999.
S. Y. Tan, M. Y. Tan, and H. S. Tan, “Multipath delay measurements and modeling for interfloor wireless communications,” IEEE Trans. Veh. Technol., vol. 49, no. 4, pp. 1334-1341, 2000.
C. Oestges, B. Clerckx, L. Raynaud, and D. Vanhoenacker-Janvier, “Deterministic channel modeling and performance simulation of microcellular wide-band communication systems,” IEEE Trans. Veh. Technol., vol. 51, no. 6, pp. 1422-1430, 2002.
G. Carluccio and M. Albani, “An efficient ray tracing algorithm for multiple straight wedge diffraction,” IEEE Trans. Antennas Propagat., vol. 56, no. 11, pp. 3534-3542, 2008.
C. Saeidi, A. Fard, and F. Hodjatkashani, “Full three-dimensional radio wave propagation preiction model,” IEEE Trans. Antennas Propagat., vol. 60, no. 5, pp. 2462-2471, 2012.
C. Saeidi, F. Hodjatkashani, and A. Fard, “New tube-based shooting and bouncing ray tracing method,” Proc. IEEE ATC, Hai Phong, Vietnam, pp. 269-273, Oct. 12-14, 2009.
S.-H. Chen and S.-K. Jeng, “SBR image approach for radio wave propagation in tunnels with and without traffic,” IEEE Trans. Veh. Technol., vol. 45, no. 3, pp. 570-578, 1996.
S.-H. Chen and S.-K. Jeng, “An SBR/image approach for radio wave propagation in indoor environments with metallic furniture,” IEEE Trans. Antennas Propagat., vol. 45, no. 1, pp. 98-106, 1997.
Y. B. Tao, H. Lin, and H. J. Bao, “Adaptive aperture partition in shooting and bouncing ray method,” IEEE Trans. Antennas Propagat., vol. 59, no. 9, pp. 3347-3357, 2011.
H. Ling, R. Chou, and S. Lee, “Shooting and bouncing rays: Calculating the RCS of an arbitrarily shaped cavity,” IEEE Trans. Antennas Propagat., vol. 37, pp. 194-205, 1989.
R. Burkholder and P. Pathak, “Computing the time domain EM scattering from large open-ended cavities using the SBR and GRE ray shooting methods,” in 9th Annual Review of Progress in Applied Computational Electromagnetics, pp. 602- 617, 1993.
J. M. Baden and V. K. Tripp, “Ray reversal in SBR RCS calculations,” in 31st International Review of Progress in Applied Computational Electromagnetics, pp. 1-2, 2015.
S. Y. Seidel and T. S. Rappaport, “Site-specific propagation prediction for wireless in-building personal communication system design,” IEEE Trans. Veh. Technol., vol. 43, pp. 879-891, Nov. 1994.
C.-F. Yang, B.-C. Wu, and C.-J. Ko, “A ray-tracing method for modeling indoor wave propagation and penetration,” IEEE Trans. Antennas Propagat., vol. 46, no. 6, pp. 907-919, 1998.
G. Liang and H. L. Bertoni, “A new approach to 3- D ray tracing for propagation prediction in cities,” IEEE Trans. Antennas Propagat., vol. 46, no. 6, pp. 853-863, 1998.
P. Bernardi, R. Cicchetti, and O. Testa, “An accurate UTD model for the analysis of complex indoor radio environments in microwave WLAN systems,” IEEE Trans. Antennas Propagat., vol. 52, no. 6, pp. 1509-1520, 2004.
