Ray-optical modeling of simulcast radio propagation channels in tunnels
Simulcast radio propagation channel characteristics inside tunnels are considered in this paper. Based on the image theory of ray optics, a simulcast radio propagation channel in a rectangular tunnel is exactly formulated. As only the field components...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/100936 http://hdl.handle.net/10220/6313 |
| _version_ | 1811687140064493568 |
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| author | Hong, H. J. Zhang, Yue Ping |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Hong, H. J. Zhang, Yue Ping |
| author_sort | Hong, H. J. |
| collection | NTU |
| description | Simulcast radio propagation channel characteristics
inside tunnels are considered in this paper. Based on the image
theory of ray optics, a simulcast radio propagation channel in a
rectangular tunnel is exactly formulated. As only the field components
of horizontal and vertical polarization are of interest in real
implementation, the exact formulation is approximated to facilitate
the numerical computation. The calculated simulcast radio
propagation channels are comparable fairly to measurements
at 900 MHz and 2.0 GHz. The validated ray-optical modeling
approach is then applied to simulate simulcast radio propagation
channel characteristics at 900 MHz and 2.0 GHz to gain deeper insight
and better understanding of this type of channels in tunnels.
Results show that large fluctuations occur in the capture regions
of the distributed antennas for both 900 MHz and 2.0 GHz. The
fluctuations in the simulcast regions are larger at 2.0 GHz than at
900 MHz. The root-mean-squared (rms) delay spread is greater in
the simulcast regions than in the capture regions of the distributed
antennas. This larger delay spread is mainly due to the delay
introduced by the transmission medium. Large values of the rms
delay spread can be avoided by a careful design of the distance
between the distributed antennas. |
| first_indexed | 2024-10-01T05:11:34Z |
| format | Journal Article |
| id | ntu-10356/100936 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:11:34Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/1009362020-03-07T14:00:32Z Ray-optical modeling of simulcast radio propagation channels in tunnels Hong, H. J. Zhang, Yue Ping School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Simulcast radio propagation channel characteristics inside tunnels are considered in this paper. Based on the image theory of ray optics, a simulcast radio propagation channel in a rectangular tunnel is exactly formulated. As only the field components of horizontal and vertical polarization are of interest in real implementation, the exact formulation is approximated to facilitate the numerical computation. The calculated simulcast radio propagation channels are comparable fairly to measurements at 900 MHz and 2.0 GHz. The validated ray-optical modeling approach is then applied to simulate simulcast radio propagation channel characteristics at 900 MHz and 2.0 GHz to gain deeper insight and better understanding of this type of channels in tunnels. Results show that large fluctuations occur in the capture regions of the distributed antennas for both 900 MHz and 2.0 GHz. The fluctuations in the simulcast regions are larger at 2.0 GHz than at 900 MHz. The root-mean-squared (rms) delay spread is greater in the simulcast regions than in the capture regions of the distributed antennas. This larger delay spread is mainly due to the delay introduced by the transmission medium. Large values of the rms delay spread can be avoided by a careful design of the distance between the distributed antennas. Published version 2010-08-17T07:49:47Z 2019-12-06T20:31:05Z 2010-08-17T07:49:47Z 2019-12-06T20:31:05Z 2004 2004 Journal Article Zhang, Y. P., & Hong, H. J. (2004). Ray-optical modeling of simulcast radio propagation channels in tunnels. IEEE Transactions on Vehicular Technology. 53(6), 1800-1808. 0018-9545 https://hdl.handle.net/10356/100936 http://hdl.handle.net/10220/6313 10.1109/TVT.2004.836920 en IEEE transactions on vehicular technology © 2004 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 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. 9 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Hong, H. J. Zhang, Yue Ping Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title | Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title_full | Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title_fullStr | Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title_full_unstemmed | Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title_short | Ray-optical modeling of simulcast radio propagation channels in tunnels |
| title_sort | ray optical modeling of simulcast radio propagation channels in tunnels |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics |
| url | https://hdl.handle.net/10356/100936 http://hdl.handle.net/10220/6313 |
| work_keys_str_mv | AT honghj rayopticalmodelingofsimulcastradiopropagationchannelsintunnels AT zhangyueping rayopticalmodelingofsimulcastradiopropagationchannelsintunnels |