可见光通信信道编码中卷积与RS级联码分析

为解译平衡码的复杂性与纠错能力, 提出一种机联码。该级联码将短码组成长码, 可满足信道在纠错过程中对码长的需求, 得到与长码相同的纠错能力, 且实现简单, 复杂度低。使用卷积码与RS码形成级联码。经仿真计算测试, 该方法与传统的卷积码相比, 在误码率超过10^-4时, 可提高编码增益1.5 dB以上, 纠错能力有较大提升。该级联码更适合可见光通信的实际应用。

Analysis of Cascaded Codes Using Convolution Code and RS Code of Visible Light Communication Channel Coding

As a means of anti interference, the channel coding has important research significance in many technical problems which can be resolved in thevisible 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 thesame 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.