A further important driver for VLC systems
comes from the flood of wireless applications.
According to the Federal Communications Commission
(FCC), a “spectrum deficit” (i.e., lack of
usable radio frequencies for new wireless applications)
was already expected for this year (2013)
due to exponential growth in demand for wireless
transmission capacity [5]. While the response of
radio technology is a further increase in spatial
reuse (e.g., by using more antennas and smaller
cells), optical frequencies remain unregulated