Abstract:

As a means of antiinterference, the channel coding has important research significance in many technical problems which can be resolved in the visible light communication. Cascade code makes short code to long code, which can satisfy the channel of yards long in the error correction process to get the same ability of long code error correction, and easy to implement with low complexity. We use convolution code and RS code to generate cascaded codes of the visible light communication channel coding. Through simulation test, this method compared with traditional convolution code, when the bit error rate reaches more than 10^-4, it can improve the coding gain amounting to more than 1.5 dB. The ability of error correction has more promotion. So this cascade code is more suitable for visible light communication requirements in practical application.

Key words: visible light communication, channel coding, convolution code, RS code, cascaded codes