Abstract
This paper presents the use of equalization techniques in visible light
communication (VLC) systems in order to increase the data rate. Here we investigate
two VLC links a silicon (Si) light emitting diode (LED) and an organic photodetector
(OPD), and an organic LED (OLED) plus an Si photodetector (PD), together with
three equalization schemes of an RC high
pass equalizer, a fractionally spaced zero-forcing equalizer (ZF) and an artificial
neural network (ANN). In addition we utilize a pre-distortion scheme to enhance
the performance of the digital equalizers. For both systems the bit rate achieved
are 750 kb/s from a raw bandwidth (BW) of 30 kHz and 550 kb/s from a raw BW
of 93 kHz.
© 2012 Crown
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