Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications
One of the most critical challenges in vehicle-to-vehicle (V2V) visible light communications (VLCs) is the access capability of multi-users over the same channel. VLC links are known to be line of sight (LOS) and highly directional compared to the commonly used radio-frequency (RF) technologies, but...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/9/1454 |
| _version_ | 1797505155755671552 |
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| author | Emmanuel Plascencia Oyunchimeg Shagdar Hongyu Guan Olivier Barrois Luc Chassagne |
| author_facet | Emmanuel Plascencia Oyunchimeg Shagdar Hongyu Guan Olivier Barrois Luc Chassagne |
| author_sort | Emmanuel Plascencia |
| collection | DOAJ |
| description | One of the most critical challenges in vehicle-to-vehicle (V2V) visible light communications (VLCs) is the access capability of multi-users over the same channel. VLC links are known to be line of sight (LOS) and highly directional compared to the commonly used radio-frequency (RF) technologies, but multi-user interference can still be problematic. Consequently, it is necessary to develop a medium access control (MAC) protocol for VLC. In the present work, we propose a novel optical code division multiple access (OCDMA) protocol. The fundamentals of the VLC channel are presented, and the interference problem is discussed in more detail. We also explain the CDMA MAC protocol and its adaptation from optical fiber communications. The simulations with our OCDMA protocol based on pseudo-noise (PN) sequence codes are presented, and the results are compared with those obtained using a solution based on VLC and optical orthogonal codes (OOCs) from the OCDMA gold standard. Finally, the results show that PN sequence OCDMA can provide sufficiently high performance and is particularly attractive because there are no synchronization requirements between nodes in real V2V scenarios. |
| first_indexed | 2024-03-10T04:14:35Z |
| format | Article |
| id | doaj.art-f21c7f3c91fb4575a225e309a4e54b2b |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T04:14:35Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-f21c7f3c91fb4575a225e309a4e54b2b2023-11-23T08:03:50ZengMDPI AGElectronics2079-92922022-04-01119145410.3390/electronics11091454Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light CommunicationsEmmanuel Plascencia0Oyunchimeg Shagdar1Hongyu Guan2Olivier Barrois3Luc Chassagne4Institut VEDECOM, 23 bis Allée des Marronniers, 78000 Versailles, FranceInstitut VEDECOM, 23 bis Allée des Marronniers, 78000 Versailles, FranceLISV, UVSQ (Laboratoire d’Ingénierie des Systèmes de Versailles, Université de Versailles Saint-Quentin), Université Paris-Saclay, 78124 Vélizy-Villacoubay, FranceLISV, UVSQ (Laboratoire d’Ingénierie des Systèmes de Versailles, Université de Versailles Saint-Quentin), Université Paris-Saclay, 78124 Vélizy-Villacoubay, FranceLISV, UVSQ (Laboratoire d’Ingénierie des Systèmes de Versailles, Université de Versailles Saint-Quentin), Université Paris-Saclay, 78124 Vélizy-Villacoubay, FranceOne of the most critical challenges in vehicle-to-vehicle (V2V) visible light communications (VLCs) is the access capability of multi-users over the same channel. VLC links are known to be line of sight (LOS) and highly directional compared to the commonly used radio-frequency (RF) technologies, but multi-user interference can still be problematic. Consequently, it is necessary to develop a medium access control (MAC) protocol for VLC. In the present work, we propose a novel optical code division multiple access (OCDMA) protocol. The fundamentals of the VLC channel are presented, and the interference problem is discussed in more detail. We also explain the CDMA MAC protocol and its adaptation from optical fiber communications. The simulations with our OCDMA protocol based on pseudo-noise (PN) sequence codes are presented, and the results are compared with those obtained using a solution based on VLC and optical orthogonal codes (OOCs) from the OCDMA gold standard. Finally, the results show that PN sequence OCDMA can provide sufficiently high performance and is particularly attractive because there are no synchronization requirements between nodes in real V2V scenarios.https://www.mdpi.com/2079-9292/11/9/1454visible light communication (VLC)multi-user interference (MUI)vehicle-to-vehicle (V2V) communicationmedium access control (MAC)optical code division multiple access (OCDMA) |
| spellingShingle | Emmanuel Plascencia Oyunchimeg Shagdar Hongyu Guan Olivier Barrois Luc Chassagne Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications Electronics visible light communication (VLC) multi-user interference (MUI) vehicle-to-vehicle (V2V) communication medium access control (MAC) optical code division multiple access (OCDMA) |
| title | Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications |
| title_full | Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications |
| title_fullStr | Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications |
| title_full_unstemmed | Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications |
| title_short | Optical CDMA MAC Evaluation in Vehicle-to-Vehicle Visible Light Communications |
| title_sort | optical cdma mac evaluation in vehicle to vehicle visible light communications |
| topic | visible light communication (VLC) multi-user interference (MUI) vehicle-to-vehicle (V2V) communication medium access control (MAC) optical code division multiple access (OCDMA) |
| url | https://www.mdpi.com/2079-9292/11/9/1454 |
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