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Content Provider | IET Digital Library |
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Author | Burton, Andrew Bentley, Edward Minh, Hoa Le Ghassemlooy, Zabih Aslam, Nauman Liaw, Shien Kuei |
Abstract | In this study, a compact design of a highly efficient, and a high luminosity light-emitting diode (LED)-based visible light communications system is presented, which is capable of providing standard room illumination levels and also wide-coverage Ethernet 10BASE-T optical wireless downlink communications over a distance of 2.3 m using commercial white light phosphor LEDs. The measured signal-to-noise ratio of the designed Ethernet system is >45 dB, thus allowing error-free communications with both on–off keying non-return zero and differential Manchester-coded modulation schemes at 10 Mbps. The uplink has been provided via a wireless infra-red link. A comparative study of a point-to-point wired local area network (LAN) and the optical wireless link confirms no discernible differences between them. The design of the transmitter is also shown to be scalable, with the frequency response for driving 25 LEDs being almost the same as driving a single LED. LED driving units are designed to match with the Ethernet sockets (RJ45) that conform to the existing LAN infrastructures (building and portable devices). |
Starting Page | 322 |
Ending Page | 330 |
Page Count | 9 |
ISSN | 1751858X |
Volume Number | 8 |
e-ISSN | 17518598 |
Issue Number | Issue 4, Jul (2014) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cds/8/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2013.0359 |
Journal | IET Circuits, Devices & Systems |
Publisher Date | 2014-03-28 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | 10BASE-T Ethernet Visible Light Communications System Amplitude Shift Keying Computer Communication Differential Manchester-coded Modulation Scheme Display Technology Error-free Communication Free Space Optical Link Frequency Response LAN InfraStructure Light Emitting Diode Modulation And Coding Method On–off Keying Nonreturn Zero Modulation Schemes Optical Communication Equipment Optical Link Optical Wireless Downlink Communication Phosphors Point-to-point Wired Local Area Network Radio Link And Equipment Signal to Noise Ratio White Phosphor Light-emitting Diode Wireless Infrared Link Wireless LAN |
Content Type | Text |
Resource Type | Article |
Subject | Control and Systems Engineering Electrical and Electronic Engineering |
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