| 构造短码长不规则LDPC码 |
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| 引用本文： | 敬龙江,林竟力,成先涛,朱维乐.构造短码长不规则LDPC码[J].信号处理,2006,22(4):589-591. |
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| 作者姓名： | 敬龙江 林竟力 成先涛 朱维乐 |
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| 作者单位： | 电子科技大学电子工程学院1603教研室,四川,成都,610054 |
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| 摘 要： | 在给定长度和度数分布对情况下,不规则短码长LDPC码的性能差别很大。本文给出了一种低复杂度的基于树的贪婪搜索算法(GTS),此算法通过调整校验矩阵中环的分布情况,尽量减少短长度环,获得最大的平均最小环,从而构造性能很好的短码长不规则LDPC码。
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| 关 键 词： | 不规则LDPC码 短码长 最小环 搜索法 |
| 修稿时间： | 2004年12月6日 |
Construction of Short Block Length Irregular Low-Density Parity-Check Codes |
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| Jing Longjiang,Lin Jingli,Cheng XianTao,Zhu Weile.Construction of Short Block Length Irregular Low-Density Parity-Check Codes[J].Signal Processing,2006,22(4):589-591. |
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| Authors: | Jing Longjiang Lin Jingli Cheng XianTao Zhu Weile |
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| Abstract: | For a given block length and given degree sequences,the ensemble of short irregular low-density parity-check codes can have considerable variation in performance.A low-complexity greedy search algorithm based on tree is propesed.This algorithm can be used to get the maximum average girth by adjusting the cycle distribution of check matrix and deceasing the short length cycles,thus resulting in good short block length irregular LDPC codes. |
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| Keywords: | irregular LDPC codes short block length girth search algorithm |
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