Lookup NU author(s): Dr Paul Haigh
This is the final published version of an article that has been published in its final definitive form by Optical Society of America, 2013.
For re-use rights please refer to the publisher's terms and conditions.
© 2013 Chinese Laser Press. This paper presents an experimental demonstration of a visible light communications link with an light emitting diode and a low-bandwidth organic photodetector as transmitter and receiver, respectively, that achieves sub 4 Mbits/s speeds. An artificial neural network (ANN) equalizer is required in order to achieve such high data rates because of the influence of intersymbol interference. The digital modulation formats tested in this paper are nonreturn-to-zero on–off keying (OOK), and fourth-order pulse position modulation (4-PPM). Without equalization, data rates of 200 and 300 kbits/s can be achieved for 4-PPM and OOK, respectively. With ANN equalization, data rates of 2.8 and 3.75 Mbits/s can be achieved for the first time for OOK and 4-PPM, respectively.
Author(s): Ghassemlooy Z, Haigh PA, Arca F, Tedde SF, Hayden O, Papakonstantinou I, Rajbhandari S
Publication type: Article
Publication status: Published
Journal: Photonics Research
Print publication date: 01/08/2013
Online publication date: 19/07/2013
Date deposited: 08/03/2019
ISSN (electronic): 2327-9125
Publisher: Optical Society of America
Altmetrics provided by Altmetric