Polar Codes with Local-Global Decoding
Polar Codes with Local-Global Decoding
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DOI：
10.1109/ieeeconf56349.2022.10051996
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Ziyuan Zhu;W. Wu;P. Siegel
中科院分区：
文献类型：
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作者：
Ziyuan Zhu;W. Wu;P. Siegel
在本文中，我们研究了一种支持本地和全局解码的耦合极性码架构。这种局部-全局构造是由数据存储和传输中的实际应用推动的，其中需要减少编码信息子块的延迟恢复。本地解码允许随机访问完整代码块的子块。当局部解码性能不足时，全局解码可提高数据可靠性。该耦合方案结合了系统的外部极性码和外部码字到内部极性码的半极化比特通道的分区映射。给出了 2 个和 4 个子块的错误率模拟结果。还讨论了影响本地和全局解码性能之间权衡的设计问题。
In this paper, we investigate a coupled polar code architecture that supports both local and global decoding. This local-global construction is motivated by practical applications in data storage and transmission where reduced-latency recovery of sub-blocks of the coded information is required. Local decoding allows random access to sub-blocks of the full code block. When local decoding performance is insufficient, global decoding provides improved data reliability. The coupling scheme incorporates a systematic outer polar code and a partitioned mapping of the outer codeword to semipolarized bit-channels of the inner polar codes. Error rate simulation results are presented for 2 and 4 sub-blocks. Design issues affecting the trade-off between local and global decoding performance are also discussed.