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基于分组Turbo码(BTC)提出光通信系统中一种新颖前向纠错(FEC)码型,即RS(63,60)×RS(63,60)码。仿真表明,在误码率为10-12时,迭代8次的该BTC与ITU-T G.975.1中迭代3次的RS(255,239)+CSOC(k0/n0=6/7,J=8)相比,其净编码增益要相应增加0.34dB。分析表明该BTC具有分量码短、编/译码速度快的特点,不仅减小了软/硬件实现的复杂度,而且减小了编/译码带来的时延。因而该新BTC能较好地适用于光通信系统。
A new forward error correction (FEC) pattern in optical communication system is proposed based on packet Turbo code (BTC), namely RS (63,60) × RS (63,60). The simulation shows that the BTC iterated 8 times and RS (255,239) + CSOC (k0 / n0 = 6/7, J = 8) iterated three times in ITU-T G.975.1 at bit error rate of 10-12, Compared to its net coding gain to be increased by 0.34dB. The analysis shows that the BTC is characterized by short component code and fast encoding / decoding, which not only reduces the complexity of software / hardware implementation but also reduces the delay caused by coding / decoding. Therefore, the new BTC can be suitably applied to an optical communication system.