| 深空通信中LDPC码的编码算法及FPGA实现 |
| |
| 引用本文： | 李忠亮,夏国江.深空通信中LDPC码的编码算法及FPGA实现[J].计算机测量与控制,2011,19(5). |
| |
| 作者姓名： | 李忠亮 夏国江 |
| |
| 作者单位： | 1. 西北工业大学,航天学院,陕西,西安,710072;北京机电工程研究所,北京,100074
2. 北京机电工程研究所,北京,100074 |
| |
| 摘 要： | 研究了美国喷气推进实验室向CCSDS建议的最新标准中关于深空通信的LDPC码编码技术;首先对编码算法进行了讨论,利用矩阵环与多项式环的同构关系,以及扩展的欧几里德算法,得到了计算准循环生成矩阵的方法;其次,针对准循环矩阵的特点,提出了一种新的基于反馈移位寄存器的编码电路;最后,利用XC4V LX40 FPGA,分别实现了资源优化的全串行编码电路和速度优化的并行编码电路。
|
| 关 键 词： | 深空通信 LDPC码 准循环 反馈移位寄存器 |
Algorithms and FPGA Implementation of LDPC Encoder for Deep Space Communication |
| |
| Li Zhongliang,Xia Guojiang.Algorithms and FPGA Implementation of LDPC Encoder for Deep Space Communication[J].Computer Measurement & Control,2011,19(5). |
| |
| Authors: | Li Zhongliang Xia Guojiang |
| |
| Affiliation: | Li Zhongliang1,2,Xia Guojiang2(1.College of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China,(2.Beijing Electro-Mechanical Engineering Research Institute,Beijing 100074,China) |
| |
| Abstract: | Low-density-parity-check(LDPC) codes which were proposed by JPL in the latest CCSDS standard for deep space communication is investigated.Firstly,the encoding algorithm is studied.The method for computing quasi-cyclic generator matrix is derived from isomorphism between matrix ring and polynomial ring and extended Euclid's algorithm.Secondly,according to the characteristics of quasi-cyclic matrix,a new encoding circuit using feedback shift registers is proposed.Last,sequential encoding circuit with resourse... |
| |
| Keywords: | deep space communication LDPC code quasi-cyclic feedback shift register |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
