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作 者:袁建国[1] 蒋泽[2] 毛幼菊[2] 叶文伟[2]
机构地区:[1]重庆大学光电工程学院,重庆400044 [2]重庆邮电大学光纤通信研究所,重庆400065
出 处:《系统仿真学报》2007年第5期1067-1071,共5页Journal of System Simulation
基 金:国家高技术发展计划(863)重大专项(2005AA123730);信息产业部科技发展计划资助项目(01XK511003);重庆邮电大学自然科学基金项目(A2006-53)
摘 要:提出光通信系统中一种基于分组Turbo码(BTC)的新颖超强前向纠错(Super-FEC)码型即:BCH(64,57)×BCH(64,57)BTC码型。仿真表明在BER=10-12时,迭代六次的该BTC码与ITU-TG.975.1中迭代三次的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码具有分量码短、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码可用于超高速、超大容量和超长距离的光通信系统中。最后还探讨了该BTC码的设计与实现。A new Super Forward Error Correction (Super-FEC) code type (viz: BCH(64,57) ×BCH(64,57) code type) in optical communication systems, based on Block Turbo Code (BTC), was proposed. The simulation results show that the Net Coding Gain (NCG) of BCH(64,57) ×BCH(64,57) code at the sixth iteration is 0.34dB more than that of RS (255,239)+CSOC(k0/n0 =6/7, J=8) code in 1TU-T G.975.1 at the third iteration for a BER of 10^-12. The analysis results show that the new BTC has the advantageous characteristics such as the shorter component code and the rapid encoding/decoding speed, thus, it reduces not only the complexity for implementing the software/hardware but also the time delay for the encoding/decoding. Therefore, the new BTC code type can be used in super high-speed, super large-capacity and ultra long-haul optical communication systems. Finally, the design and implementation of the new BTC were also discussed.
关 键 词:分组TURBO码 光通信系统 超强前向纠错 净编码增益
分 类 号:TN929.11[电子电信—通信与信息系统]
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