| BCH+turbo码在军用光通信系统应用中的性能分析 |
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| 引用本文： | 向小梅,张晓晖,饶炯辉.BCH+turbo码在军用光通信系统应用中的性能分析[J].海军工程大学学报,2004,16(1):103-106. |
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| 作者姓名： | 向小梅 张晓晖 饶炯辉 |
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| 作者单位： | 海军工程大学,兵器工程系,湖北,武汉,430033 |
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| 摘 要： | 对应用于光通信系统的原始turbo码提出了改进方案:用BCH码做外码、turbo码做内码组成一种新的串行级联卷积码(SCCC).提出了相应的全面迭代最大后验概率(MAP)译码算法.推导了级联码的不可检测错误概率.对SCCC码的误码率进行了仿真,仿真结果表明,SCCC码在高信噪比时降低了通信系统的误码率,可适用于军用光通信系统.
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| 关 键 词： | 光通信 串行级联卷积码 前向纠错码 MAP算法 误码率 |
| 文章编号： | 1009-3486(2004)01-0103-04 |
| 修稿时间： | 2003年9月4日 |
Performance analysis of SCCCbased on BCHand turbo codes in military optical communication system |
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| XIANG Xiao-mei,ZHANG Xiao-hui,RAO Jiong-hui.Performance analysis of SCCCbased on BCHand turbo codes in military optical communication system[J].Journal of Naval University of Engineering,2004,16(1):103-106. |
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| Authors: | XIANG Xiao-mei ZHANG Xiao-hui RAO Jiong-hui |
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| Abstract: | A serial concatenated convolutional code (SCCC) that consists of the BCH code and turbo code is proposed as an improvement on turbo code applied in the military optical communication. The BCH code serves as the outer code while the turbo code serves as the inner code. A corresponding (over-all MAP) decoding algorithm is put forward. A formula of undetectable error probability is (deduced.) A simulation of bit error rate (BER) of (SCCC) is done. The result of simulation shows that SCCC reduces the bit error rate (BER) on the high signal-to-noise ratio (SNR), and it can be used for the military optical communication system. |
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| Keywords: | optical communication SCCC forward error-correcting codes MAP algorithm BER |
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