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中文摘要：
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。
英文摘要：
Based on block turbo code（BTC）, a novel forward error correction（FEC） code of RS（63,60）× RS（63,60） code is proposed for optical communication systems. The simulation results show that the net coding gain（NCG） of RS（63,60）× RS（63,60） code at the eighth iteration is 0.34 dB more than that of RS（255,239）＋CSOC（k0/no=6/7,J=8） code in ITU-T G. 975.1 at the third iteration for the bit error rate（BER） of 10-12. The analysis shows that the novel BTC has the characteristics of shorter component code and rapid encoding/decoding speed, not only reducing the complexity for implementing the software/hardware implementation but also the time delay for the encoding/decoding. As a result, the novel BTC code can better suitable for optical communication systems.
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