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高速数据传输中的LDPC码译码算法研究 被引量:12

Research on LDPC Codes Decoding Algorithm for High Data Rate Transmission
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摘要 在对LDPC码(低密度奇偶校验码)不同译码算法的原理进行深入研究的基础上,提出了一种改进型的最小和译码算法。通过分析不同译码算法的计算复杂度,验证不同算法的译码性能,表明改进最小和译码算法降低了运算复杂度,减少了平均迭代次数,改善了算法的收敛特性,是一种低运算量高性能的译码算法,有利于提高吞吐量,在高速数据传输上具有很大应用价值。 This paper analyzes the complexity and capability of different decoding algorithms for LDPC code based on in-depth study of the theory of decoding algorithms.An improved min-sum decoding algorithm is proposed.The simulation results demonstrate that the proposed algorithm reduces the computation complexity,decreases the average iterations and improves the convergence property.Therefore,this modified decoding algorithm is highly valuable for hardware implementation.
出处 《无线电工程》 2011年第3期20-22,共3页 Radio Engineering
关键词 LDPC LLR-BP 最小和算法 改进最小和译码算法 LDPC LLR-BP modified decoding algorithm min-sum algorithm
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