| 基于DVB—S2标准LDPC码译码器的设计 |
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| 引用本文： | 祁中洋,林基明.基于DVB—S2标准LDPC码译码器的设计[J].桂林电子科技大学学报,2009,29(3):203-207. |
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| 作者姓名： | 祁中洋 林基明 |
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| 作者单位： | 桂林电子科技大学信息与通信学院,广西桂林,541004 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，广西自然科学基金 |
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| 摘 要： | 在分析SMP消息传递算法和MSA消息传递算法特点的基础之上,采用了一种改进的消息传递算法,使校验节点更新与变量节点后验概率更新能同时进行,不但可以提高译码器的吞吐量,而且能有效降低了译码时延.文中通过第二代卫星数字视频广播标准(DVB-S2)标准中LDPC码为例,介绍了FPGA实现过程中各模块的结构和功能,FPGA硬件仿真表明,最高译码速率可以达到60 Mbps.
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| 关 键 词： | 译码器 |
Design of LDPC Decoder Based on DVB-S2 Standard |
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| QI Zhong-yang,LIN Ji-ming.Design of LDPC Decoder Based on DVB-S2 Standard[J].Journal of Guilin Institute of Electronic Technology,2009,29(3):203-207. |
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| Authors: | QI Zhong-yang LIN Ji-ming |
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| Affiliation: | School of Information and Communication Engineering;Guilin Electronic University Of Technology;Guilin 541004;China |
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| Abstract: | An improved message scheduling algorithm is proposed based on the study of the features of the SMP message scheduling algorithm and MSA message scheduling algorithm.It enables the synchronization of check node update and the posterior probability of variable node update,and thus not only improves the throughput of the decoder but also reduces the time-delay in decoder.The second-generation satellite digital video broadcasting standard(DVB-S2) LDPC code is used as an example to illustrate the structure and f... |
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| Keywords: | DVB-S2 LDPC |
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