| 改进的LDPC译码算法研究 |
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| 引用本文： | 陈旭灿,刘冬培.改进的LDPC译码算法研究[J].电子科技大学学报(社会科学版),2010(2). |
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| 作者姓名： | 陈旭灿 刘冬培 |
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| 作者单位： | 国防科技大学计算机学院; |
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| 基金项目： | 国家863高技术研究发展计划(2007AA01Z287) |
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| 摘 要： | 基于LDPC码的BP译码简化算法,结合RMP调度和Offset最小和算法,提出了一种改进的LDPC译码算法。在相同的前提下,改进的译码算法在计算复杂度方面,与Offset最小和算法相比,改善了算法的收敛特性;采用优化的存储方式,降低了存储需求,适合硬件实现。仿真结果表明,改进的译码算法降低了平均迭代次数,减少了量化实现占用的存储单元。
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| 关 键 词： | BP算法 LDPC码 改进的译码算法 Offset最小和算法 RMP |
Modified Decoding Algorithm of LDPC Codes |
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| CHEN Xu-can , LIU Dong-pei.Modified Decoding Algorithm of LDPC Codes[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2010(2). |
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| Authors: | CHEN Xu-can LIU Dong-pei |
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| Institution: | Computer School;National University of Defense Technology Changsha 410073 |
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| Abstract: | The simple algorithms based on belief propagation algorithm of LDPC codes are studied.A modified algorithm which integrates Row Message Passing schedule with Offset Min-Sum algorithm for decoding LDPC codes is proposed.The proposed algorithm facilitates hardware implementation because it improves the convergence property while its computation complexity is the same as Offset Min-Sum algorithm,and it reduces the storage for the optimized memory method.The simulation results demonstrate that the proposed algo... |
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| Keywords: | belief propagation algorithm LDPC codes modified decoding algorithm Offset min-sum algorithm row message passing |
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