Chen Chang, Qiu Qi, Su Jun, et al. Research on Super-FEC technology for high-rate optical communications[J]. 2012,(5):5-7. DOI: 10.13756/j.gtxyj.2012.05.013.
In line with the requirements of high-rate optical communication systems for Optical Signal-to-Noise-Ratio(OSNR)
this paper proposes a Super-FEC scheme based on an irregular Low-Density Parity-Check(LDPC) long code.This scheme uses the BCH code in different systems as the outer code and the LDPC code as the concatenated way of the inner code.In view of the needs of the systems for different bit rates
it designs different concatenated structural forms.In the simulation
the net coding gains of these Super-FEC schemes are in the range of 6.18
7
.63 dB
which are higher than those of the traditional schemes.