The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels
Wide-band wireless communication in tunnels and long corridors faces challenges due to multipath interferences and delay spread. Wall reflections induce dispersion, causing amplitude and phase distortions in the received signal, with the extent of distortion determined by multiple factors. Accurate...
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10838561/ |
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| author | Yehuda Taragin Niv Elkayam Gad A. Pinhasi Yosef Pinhasi |
| author_facet | Yehuda Taragin Niv Elkayam Gad A. Pinhasi Yosef Pinhasi |
| author_sort | Yehuda Taragin |
| collection | DOAJ |
| description | Wide-band wireless communication in tunnels and long corridors faces challenges due to multipath interferences and delay spread. Wall reflections induce dispersion, causing amplitude and phase distortions in the received signal, with the extent of distortion determined by multiple factors. Accurate modeling of space-frequency effects is essential for designing reliable indoor wireless links. This study presents an experimentally validated, precise, and versatile model for the propagation of modulated wireless signals in tunnels. Quasi-optical, multi-ray model is employed to derive the transfer function, describing the indoor propagation in the frequency domain. The model enables analysis of the impact of changes among other in modulations, frequencies, and different bandwidths. The results include a comprehensive comparison of various cases for Bit Error Rate (BER), Error Vector Magnitude (EVM), constellations, and facilitating a thorough examination of the tunnel effects in each scenario. Several representative results are presented in the paper. Notably, a significant correlation is observed between the bandwidth used and an increase in BER. Furthermore, the comparison between Orthogonal Frequency Division Multiplexing (OFDM) and Quadrature Amplitude Modulation (QAM) reveals a distinct preference for OFDM due to its ability to overcome the frequency-selective fading nature of the tunnel. |
| format | Article |
| id | doaj-art-7bfcb7cf8dfa461bb386b2ea7140121c |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-7bfcb7cf8dfa461bb386b2ea7140121c2025-01-21T00:02:26ZengIEEEIEEE Access2169-35362025-01-011399951000810.1109/ACCESS.2025.352864510838561The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in TunnelsYehuda Taragin0https://orcid.org/0000-0002-5322-8864Niv Elkayam1Gad A. Pinhasi2https://orcid.org/0000-0003-3112-6776Yosef Pinhasi3https://orcid.org/0000-0001-6887-8571Department of Electrical and Electronics Engineering, Ariel University, Ariel, IsraelDepartment of Electrical and Electronics Engineering, Ariel University, Ariel, IsraelDepartment of Chemical Engineering, Ariel University, Ariel, IsraelDepartment of Electrical and Electronics Engineering, Ariel University, Ariel, IsraelWide-band wireless communication in tunnels and long corridors faces challenges due to multipath interferences and delay spread. Wall reflections induce dispersion, causing amplitude and phase distortions in the received signal, with the extent of distortion determined by multiple factors. Accurate modeling of space-frequency effects is essential for designing reliable indoor wireless links. This study presents an experimentally validated, precise, and versatile model for the propagation of modulated wireless signals in tunnels. Quasi-optical, multi-ray model is employed to derive the transfer function, describing the indoor propagation in the frequency domain. The model enables analysis of the impact of changes among other in modulations, frequencies, and different bandwidths. The results include a comprehensive comparison of various cases for Bit Error Rate (BER), Error Vector Magnitude (EVM), constellations, and facilitating a thorough examination of the tunnel effects in each scenario. Several representative results are presented in the paper. Notably, a significant correlation is observed between the bandwidth used and an increase in BER. Furthermore, the comparison between Orthogonal Frequency Division Multiplexing (OFDM) and Quadrature Amplitude Modulation (QAM) reveals a distinct preference for OFDM due to its ability to overcome the frequency-selective fading nature of the tunnel.https://ieeexplore.ieee.org/document/10838561/BERexperimentindoor propagationmodulationsOFDMray tracing |
| spellingShingle | Yehuda Taragin Niv Elkayam Gad A. Pinhasi Yosef Pinhasi The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels IEEE Access BER experiment indoor propagation modulations OFDM ray tracing |
| title | The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels |
| title_full | The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels |
| title_fullStr | The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels |
| title_full_unstemmed | The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels |
| title_short | The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels |
| title_sort | effects of multipath on the performance of high rate digital qam and ofdm wireless link operating in tunnels |
| topic | BER experiment indoor propagation modulations OFDM ray tracing |
| url | https://ieeexplore.ieee.org/document/10838561/ |
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