1 research outputs found
Efficient Flicker-Free FEC Codes using Knuth's Balancing Algorithm for VLC
Visible light communication (VLC) provides a short-range optical wireless
communication through light-emitting diode (LED) lighting. Light beam
flickering and dimming are among the challenges to be addressed in VLC.
Conventional methods for generating flicker-free codes in VLC are based on
run-length limited codes that have poor error correction performance, use
lookup tables which are memory consuming, and have low transmission rates. In
this paper, we propose an efficient construction of flicker-free forward error
correction codes to tackle the issue of flickering in VLC. Our simulation
results show that by using polar codes and at a dimming ratio of 50%, the
proposed system generates flicker-free codes without using lookup tables, while
having lower complexity and higher transmission rates than the standard VLC
methods. For an information block length of 256, the error correction
performance of the proposed scheme is dB and dB better than that of
the regular schemes at the bit error rate of for a rate of 0.44 and
0.23, respectively.Comment: 6 pages, 8 figures, conferenc