| LDPC码快速编码器的DSP设计与实现 |
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| 引用本文： | 于佳,董淑福,张健.LDPC码快速编码器的DSP设计与实现[J].电视技术,2011,35(7):49-50,55. |
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| 作者姓名： | 于佳 董淑福 张健 |
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| 作者单位： | 空军工程大学电讯工程学院;中国人民解放军63618部队;总装备部南京军事代表局; |
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| 摘 要： | 对CCSDS131.1-0-2(Experimental Specification)中提出的一类准循环LDPC删余码进行研究,分析了该类码的特点,并仿真了其性能;结合其特点,对编码中的"贪婪算法"进行一定的改进,设计了快速编码算法.通过对TMS320C6416DSP平台的功能与运算技巧的结合,对编码算法代码进行合理优...
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| 关 键 词： | 低密度奇偶校验码 准循环 删余 编码器 数字信号处理器 |
Fast Encoding of LDPC Codes Based on DSP |
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| YU Jia,DONG Shufu,ZHANG Jian.Fast Encoding of LDPC Codes Based on DSP[J].Tv Engineering,2011,35(7):49-50,55. |
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| Authors: | YU Jia DONG Shufu ZHANG Jian |
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| Affiliation: | 1. Telecommunication Institute, Air Force Engineering University, Xi’an 710077, China;2. Troops 63618 of PLA, Xinjiang Korla 841000, China; 3. Nanjing Military Representative Bureau, General Armaments Department of PLA, Jiangsu Wuxi 214035, China) |
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| Abstract: | The punctured Quasi-Cyclic Low-Density Parity-Check (QC-LDPC) code proposed by CCSDS 131.1-O-2 (Experimental Specification) is investigated. First, the characteristics of the codes are analyzed, and its decoding performance is simulated. Then, the encoding method called "Greedy Algorithm" combining with the code’s character is improved, and a fast encoding method is proposed. At last, how to optimize the encoding method by taking good use of the functions afforded by the DSP TMS320C6416 platform and skills of operations is described. The encoding rate can achieve 30 Mbit/s based on DSP. |
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| Keywords: | LDPC codes quasi-cyclic puncture encoder DSP |
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