Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link
To achieve higher visible light communication (VLC) traffic capacity, using the wide bandwidth light-emitting diode (LED) and spectral efficiency modulation signal, is currently the most commonly used method. In this demonstration, we apply the orthogonal frequency division multiplexing quadrature a...
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MDPI AG
2024-10-01
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| Online Access: | https://www.mdpi.com/2072-666X/15/11/1322 |
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| author | Yuan-Zeng Lin Chien-Hung Yeh Wen-Piao Lin Chi-Wai Chow |
| author_facet | Yuan-Zeng Lin Chien-Hung Yeh Wen-Piao Lin Chi-Wai Chow |
| author_sort | Yuan-Zeng Lin |
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| description | To achieve higher visible light communication (VLC) traffic capacity, using the wide bandwidth light-emitting diode (LED) and spectral efficiency modulation signal, is currently the most commonly used method. In this demonstration, we apply the orthogonal frequency division multiplexing quadrature amplitude modulation (OFDM-QAM) with bit- and power-loading algorithm on single blue LED to achieve >1 Gbit/s VLC capacity, when a 400 MHz bandwidth avalanche photodiode (APD)-based receiver (Rx) is exploited for decoding. Here, the higher sensitivity APD can be applied to compensate for the wireless VLC link length in the proposed LED VLC system, and due to the lower LED illumination (255 to 40 lux), is used for the indoor access network after passing the wireless link length of 1 to 4 m. As a result, using single blue LED can achieve 0.962 to 1.057 Gbit/s OFDM rate with available 400 MHz bandwidth APD in poorly illuminated condition indoors without applying analogy equalization. |
| format | Article |
| id | doaj-art-b5d8cf4de9644a67b8ac479f194e7f1f |
| institution | OA Journals |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Micromachines |
| spelling | doaj-art-b5d8cf4de9644a67b8ac479f194e7f1f2025-08-20T02:04:59ZengMDPI AGMicromachines2072-666X2024-10-011511132210.3390/mi15111322Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless LinkYuan-Zeng Lin0Chien-Hung Yeh1Wen-Piao Lin2Chi-Wai Chow3Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu 300093, TaiwanDepartment of Photonics, Feng Chia University, Taichung 407802, TaiwanDepartment of Electrical Engineering, Chang Gung University, Taoyuan 333323, TaiwanDepartment of Photonics, National Yang Ming Chiao Tung University, Hsinchu 300093, TaiwanTo achieve higher visible light communication (VLC) traffic capacity, using the wide bandwidth light-emitting diode (LED) and spectral efficiency modulation signal, is currently the most commonly used method. In this demonstration, we apply the orthogonal frequency division multiplexing quadrature amplitude modulation (OFDM-QAM) with bit- and power-loading algorithm on single blue LED to achieve >1 Gbit/s VLC capacity, when a 400 MHz bandwidth avalanche photodiode (APD)-based receiver (Rx) is exploited for decoding. Here, the higher sensitivity APD can be applied to compensate for the wireless VLC link length in the proposed LED VLC system, and due to the lower LED illumination (255 to 40 lux), is used for the indoor access network after passing the wireless link length of 1 to 4 m. As a result, using single blue LED can achieve 0.962 to 1.057 Gbit/s OFDM rate with available 400 MHz bandwidth APD in poorly illuminated condition indoors without applying analogy equalization.https://www.mdpi.com/2072-666X/15/11/1322visible light communication (VLC)OFDM-QAMblue LEDAPDequalization |
| spellingShingle | Yuan-Zeng Lin Chien-Hung Yeh Wen-Piao Lin Chi-Wai Chow Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link Micromachines visible light communication (VLC) OFDM-QAM blue LED APD equalization |
| title | Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link |
| title_full | Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link |
| title_fullStr | Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link |
| title_full_unstemmed | Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link |
| title_short | Utilization of Optical OFDM Modulation on Blue LED VLC Datacom Without Equalization for 4 m Wireless Link |
| title_sort | utilization of optical ofdm modulation on blue led vlc datacom without equalization for 4 m wireless link |
| topic | visible light communication (VLC) OFDM-QAM blue LED APD equalization |
| url | https://www.mdpi.com/2072-666X/15/11/1322 |
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