| DVB-S2标准LDPC码的算法研究和仿真 |
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| 引用本文： | 陈和香,苗东,陈武凡. DVB-S2标准LDPC码的算法研究和仿真[J]. 中国有线电视, 2007, 0(Z2) |
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| 作者姓名： | 陈和香 苗东 陈武凡 |
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| 作者单位： | 电子科技大学 四川成都610054(陈和香，陈武凡)，四川九洲电器集团公司技术研究部 四川绵阳621000(苗东) |
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| 摘 要： | 阐述了LDPC(Low Density Parity Check)码的基本原理,基于DVB-S2中LDPC码分析了该类码的构造、编码及译码原理,同时给出DVB-S2中LDPC码在码率为2/3、码长为16200bits时的仿真结果。仿真结果表明,在低信噪比情况下,该LDPC码仍然获得了令人满意的纠错效果,且在性能上的确优于其他码。随着技术的进步,相信LDPC编译码技术将在更多的领域得到应用。
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| 关 键 词： | DVB-S2标准 LDPC码 BP算法 |
Research and Simulation of LDPC Code in DVB-S2 Systems |
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| CHEN He-xiang,MIAO Dong,CHEN Wu-fan. Research and Simulation of LDPC Code in DVB-S2 Systems[J]. China Cable Television, 2007, 0(Z2) |
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| Authors: | CHEN He-xiang MIAO Dong CHEN Wu-fan |
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| Affiliation: | CHEN He-xiang1,MIAO Dong2,CHEN Wu-fan1 |
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| Abstract: | This paper introduces the basic principle of LDPC(Low Density Parity Check)code.Base on the analysis of LDPC used in DVB-S2 system,this paper depicts its construction and the principle of coding and decoding,and gives the result of the simulation at 2/3 rate and 16200 bits length.The result of simulation shows that the LDPC code can give a satisfied result on error correcting at low signal-to-noise ratios,and has the advantage of other codes in performance.With the developing of technology,the technology of coding and decoding of LDPC code can be used in more areas. |
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| Keywords: | DVB-S2 standard LDPC code BP algorithm |
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