Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements
The uniform theory of diffraction (UTD) developed in Part 1 is used to predict narrow- and wide-band propagation characteristics in tunnels at 900- and 1800-MHz frequencies. Narrow-band propagation characteristics is shown in spatial domain and wide-band propagation in time domain. In empty straight...
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sg-ntu-dr.10356-914252020-03-07T14:02:40Z Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements Kouyoumjian, Robert G. Hwang, Y. Zhang, Yue Ping School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics The uniform theory of diffraction (UTD) developed in Part 1 is used to predict narrow- and wide-band propagation characteristics in tunnels at 900- and 1800-MHz frequencies. Narrow-band propagation characteristics is shown in spatial domain and wide-band propagation in time domain. In empty straight-tunnel environments, propagation exhibits a break-point phenomenon and has very short time delay spread. In empty curved or branched tunnel environments, propagation suffers higher loss. Vehicles cause additional propagation loss and larger varying time delay spread in tunnels. The measured results have validated the accuracy of the theoretical model and provided important information on narrow-band and wide-band propagation characteristics in empty, branched and obstructed tunnels. Published version 2009-07-31T04:56:44Z 2019-12-06T18:05:28Z 2009-07-31T04:56:44Z 2019-12-06T18:05:28Z 1998 1998 Journal Article Zhang, Y. P., Hwang, Y., & Kouyoumjian, R. G. (1998). Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2: Analysis and measurements. IEEE Transactions on Antennas and Propagation, 46(9), 1337-1345. 0018-926X https://hdl.handle.net/10356/91425 http://hdl.handle.net/10220/5945 10.1109/8.719977 en IEEE transactions on antennas and propagation IEEE Transactions on Antennas and Propagation © 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site. 9 p. application/pdf |
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DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Kouyoumjian, Robert G. Hwang, Y. Zhang, Yue Ping Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
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The uniform theory of diffraction (UTD) developed in Part 1 is used to predict narrow- and wide-band propagation characteristics in tunnels at 900- and 1800-MHz frequencies. Narrow-band propagation characteristics is shown in spatial domain and wide-band propagation in time domain. In empty straight-tunnel environments, propagation exhibits a break-point phenomenon and has very short time delay spread. In empty curved or branched tunnel environments, propagation suffers higher loss. Vehicles cause additional propagation loss and larger varying time delay spread in tunnels. The measured results have validated the accuracy of the theoretical model and provided important information on narrow-band and wide-band propagation characteristics in empty, branched and obstructed tunnels. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Kouyoumjian, Robert G. Hwang, Y. Zhang, Yue Ping |
| format |
Article |
| author |
Kouyoumjian, Robert G. Hwang, Y. Zhang, Yue Ping |
| author_sort |
Kouyoumjian, Robert G. |
| title |
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
| title_short |
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
| title_full |
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
| title_fullStr |
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
| title_full_unstemmed |
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments-Part 2 : analysis and measurements |
| title_sort |
ray-optical prediction of radio-wave propagation characteristics in tunnel environments-part 2 : analysis and measurements |
| publishDate |
2009 |
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https://hdl.handle.net/10356/91425 http://hdl.handle.net/10220/5945 |
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1681043589091557376 |