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优化的通用化LDPC卷积代码
Li Deng1,2, Kai Tao3, Zhiping Shi1,2
1Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China.
Entropy (Basel, Switzerland)
|September 27, 2025
概括
针对一般化的LDPC卷积代码 (GLDPC-CCs) 的优化编码和解码方案提高了性能. 新的方法提高了纠错能力,显示了光通信系统的巨大潜力.
科学领域:
- 编码理论编码理论
- 信息理论 信息理论
- 数字通信数字通信
背景情况:
- 一般化的LDPC卷积代码 (GLDPC-CCs) 对于可靠的数据传输至关重要.
- 现有的GLDPC-CC编码和解码方案在性能和复杂性方面存在局限性.
- 光通信系统需要高效的错误纠正代码.
研究的目的:
- 为GLDPC-CCs提出新的优化编码和解码方案.
- 提高GLDPC-CCs的性能和降低其复杂性.
- 验证光通信应用所提议方案的有效性.
主要方法:
- 提出了一种灵活的兴奋剂方法,将单一平价检查 (SPC) 节点替换为通用检查 (GC) 节点 (例如,BCH代码).
- 引入了一种混合分层规范最小和 (HLNMS) 解码算法,将SPC节点的LNMS和GC节点的Chase-Pyndiah结合起来.
- 开发了GC节点的适应性重量因子和基于相互信息的早期停止解码策略.
主要成果:
- 拟议的灵活兴奋剂方法允许选择不同类型的BCH代码作为GC节点.
- 具有自适应加权和早期停止的HLNMS解码算法提高了解码性能并降低了复杂性.
- 模拟结果表明,拟议的GLDPC-CC方案比先前的技术优越.
结论:
- 开发的编码和解码方案为GLDPC-CCs提供了显著的改进.
- 提出的方法增强了错误纠正能力,使GLDPC-CC更适合苛刻的应用.
- 根据拟议方案的GLDPC-CC显示在光通信系统中具有很大的应用潜力.
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