| 基于循环检测的LDPC比特翻转译码算法研究 |
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| 引用本文： | 朱方强,王中训,刘丽,王娟.基于循环检测的LDPC比特翻转译码算法研究[J].电视技术,2011,35(13):79-82. |
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| 作者姓名： | 朱方强 王中训 刘丽 王娟 |
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| 作者单位： | 烟台大学光电信息科学技术学院,山东烟台,264005 |
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| 摘 要： | 提出一种基于循环检测的低密度奇偶校验码的比特翻转(BF)译码算法,采用对译码翻转比特的循环检测和对接受符号可靠性信息的软判决,使译码性能大大改善.理论分析表明,该译码运算复杂度低,仿真结果表明,改进的算法优于加权比特翻转译码LP-WBF算法约0.3 dB,误码性能改善明显.
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| 关 键 词： | LDPC码 加权比特翻转译码 循环检测 软判决 |
Research of LDPC BF Decoding Algorithm Based on Loop Detection |
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| ZHU Fangqiang,WANG Zhongxun,LIU Li,WANG Juan.Research of LDPC BF Decoding Algorithm Based on Loop Detection[J].Tv Engineering,2011,35(13):79-82. |
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| Authors: | ZHU Fangqiang WANG Zhongxun LIU Li WANG Juan |
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| Affiliation: | (Institute of Science and Technology for Opto-Electronics Information,Yantai University,Shandong Yantai 264005,China) |
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| Abstract: | In this paper,a new bit-flipping decoding algorithm for low-density parity check codes (LDPC) based on loop detection mechanism is proposed.This decoding algorithm’s performance is significantly improved by introducing a loop detection mechanism for the failed flipping bit and the soft decision about the reliablility measure of the received symbols.Theoretical analysis shows that this new decoding complexity is lower.The simulation results show that comparing with LP-WBF decoding algorithm for LDPC codes,our new algorithm can get the gain about 0.3 dB and significantly improved BER performance. |
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| Keywords: | LDPC codes weighted bit-flipping algorithm loop detection soft-decision |
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