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低密度奇偶校验码 (LDPC)

LDPC码由Robert Gallager于1962年发明,并在20世纪90年代由MacKay重新发现,它是由稀疏奇偶校验矩阵定义的线性纠错码。通过迭代信念传播译码,其性能可接近香农极限0.4 dB,并已成为现代无线通信(WiFi-6、5G NR、数字视频广播)的标准。与Turbo码不同,LDPC码具有更优雅的图论结构和更成熟的理论分析。

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来源

  1. Gallager, R. G. (1962). Low-density parity-check codes. IRE Transactions on Information Theory, 8(1), 21-28. DOI: 10.1109/TIT.1962.1057683
  2. Richardson, T. J., & Urbanke, R. L. (2001). The capacity of low-density parity-check codes under message-passing decoding. IEEE Transactions on Information Theory, 47(2), 599-618. DOI: 10.1109/18.910577

如何引用本页

ScholarGate. (2026, June 3). Low-Density Parity-Check Codes. ScholarGate. https://scholargate.app/zh/telecommunications/ldpc-codes

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被引用于

ScholarGateLDPC Codes (Low-Density Parity-Check Codes). 于 2026-06-15 检索自 https://scholargate.app/zh/telecommunications/ldpc-codes · 数据集: https://doi.org/10.5281/zenodo.20539026