A Comparative Study of Coded and Uncoded Optical Frequency Domain Channel Equalizer in Visible Light Communications

This article recommends using channel encoders to develop the achievement of optical single carrier frequency domain equalizers (OSC-FDE) in multi-path optical channel environment, which is an alternative to OFDM waveform for visible light communication (VLC) systems. Reed Solomon (RS) and convolutional coding (CC) are used as channel encoders. Computer simulations are made to compare the encoded OSC-FDE method with the non-encoded OSC-FDE and VLC-OFDM methods over the bit error rate (BER) achievement criteria. From the acquired outcomes, it is perceived that 18 dB SNR development is achieved, especially with the convolutional coding.