| 一种码长变化灵活的重复累加码构造方法 |
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| 引用本文： | 刘焕兵,陈翔,姜晖.一种码长变化灵活的重复累加码构造方法[J].电视技术,2012,36(1):80-82,117. |
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| 作者姓名： | 刘焕兵 陈翔 姜晖 |
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| 作者单位： | 合肥电子工程学院,安徽合肥,230037 |
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| 摘 要： | 在一类非规则重复累加码优越的次数分布对基础上,利用准循环码原理设计了基校验矩阵,并进行了去四环优化,利用算法构建优化的低密度奇偶校验码,码长变化灵活,性能比优化前有明显提高,十分接近IEEE 802.16e标准规定的LDPC码性能,非常适合电视信号的传输。
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| 关 键 词： | 低密度奇偶校验码 非规则重复累积码 准循环码 |
Construction Scheme of IRA Code with Flexible Code Length |
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| LIU Huanbing,CHEN Xiang,JIANG Hui.Construction Scheme of IRA Code with Flexible Code Length[J].Tv Engineering,2012,36(1):80-82,117. |
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| Authors: | LIU Huanbing CHEN Xiang JIANG Hui |
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| Affiliation: | (Hefei Electronic Engineering Institute,Hefei 230037,China) |
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| Abstract: | Based on the good degree distribution of a kind of irregular repeat accumulate(IRA) code,the base check matrix is designed according to quasi-cyclic method,and the length-4 short circle are eliminated.The obtained IRA code has flexible code length between 150 to 6 000,with link-level performance close to the LDPC code specified by IEEE 802.16e standard.The proposed IRA code family is suitable for television signal transmission. |
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| Keywords: | LDPC code IRA code QC code |
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