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Lookup NU author(s): Dr Paul HaighORCiD
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In this letter, we experimentally demonstrate the discrete multitone (DMT) modulation scheme for organic light emitting diode-based visible light communications (OLED-VLC). DMT is based upon quadrature modulation of orthogonally spaced frequencies, meaning the scheme is extremely spectrally efficient. With this technique, we set a new world record data rate of 1.4 Mb/s, which is far in excess of the previous record of 550 kb/s. We achieve this using a 32-level quadrature amplitude modulation (32-QAM) in conjunction with 1024 subcarriers. We show that it is possible to recover signals up to 1.4 Mb/s with an OLED of bandwidth less than 100 kHz, which is an increase of over 14 times. © 1989-2012 IEEE.
Author(s): Haigh PA, Ghassemlooy Z, Papakonstantinou I
Publication type: Article
Publication status: Published
Journal: IEEE Photonics Technology Letters
Print publication date: 15/03/2013
Online publication date: 01/02/2013
ISSN (print): 1041-1135
ISSN (electronic): 1941-0174
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