Abstract
Visible light communication (VLC) is an emerging communication technology
for short-range applications, especially indoors. This technology uses light,
emitted from super-illuminating semiconductors for the primary purpose of
illumination, to carry information in addition. One of the major challenges
faced in implementing VLC technology is to find a way to achieve communication
without affecting the illumination. In this paper, we describe an inverse
pulse position modulation method that encapsulates communication data in the
time domain without affecting the illumination property, which is conveyed
in the amplitude domain. Due to the fact that this modulation method requires
accurate synchronization, we have studied the effect of clock time shift and
jitter on the system bit-error-rate performance and have derived models that
could be used to define the minimum requirements of the synchronization system.
© 2012 IEEE
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