| 基于校验式可信度的比特翻转LDPC译码算法 |
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| 引用本文： | 吴祖辉,熊磊,陈霞. 基于校验式可信度的比特翻转LDPC译码算法[J]. 北京交通大学学报(自然科学版), 2008, 32(2): 76-80 |
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| 作者姓名： | 吴祖辉 熊磊 陈霞 |
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| 作者单位： | 北京交通大学轨道交通控制与安全国家重点实验室 北京100044 |
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| 摘 要： | 提出一种基于校验式可信度的比特翻转(CR-BF)低密度奇偶校验(LDPC)译码算法,及其改进.该算法利用校验式的可信度作为比特翻转准则,并参考校验式的错误个数,每次迭代翻转多个比特.仿真结果表明,与加权比特翻转(WBF)算法相比,该算法加快了迭代收敛速度,改善了误码性能.
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| 关 键 词： | 低密度奇偶校验码 迭代译码 加权比特翻转算法 |
| 文章编号： | 1673-0291(2008)02-0076-04 |
| 修稿时间： | 2007-06-04 |
Check of Reliability-Based Bit-Flipping Decoding Algorithm for LDPC Codes |
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| WU Zuhui,XIONG Lei,CHEN Xia. Check of Reliability-Based Bit-Flipping Decoding Algorithm for LDPC Codes[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2008, 32(2): 76-80 |
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| Authors: | WU Zuhui XIONG Lei CHEN Xia |
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| Abstract: | In this paper,a check of reliability-based bit-flipping(Check Reliability-based Bit Flipping,CR-BF) decoding algorithm for Low Density Parity Check(LDPC) Code is proposed.The CR-BF algorithm flips bits based on the reliability of parity-check equations.Then the number of error parity-check equations is considered to flip more than 1 bit in each iteration.Simulation results show that the proposed algorithms converge faster and achieve better performance. |
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| Keywords: | low-density parity-check(LDPC) code iteration decoding weighted bit-flipping(WBF) algorithm |
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