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Low-Complexity Syndrome-Based Linear Programming Decoding of Quantum LDPC Codes

delete2026-01-01
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PRE
AI
S
Sana Javed *
S
Sergio Colet
F
Francisco García-Herrero
O
O. Ruano
J
Juan Antonio Maestro
B
Bane Vasić
M
Mark F. Flanagan
DOI:10.1109/TQE.2025.3640361delete
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摘要

摘要

En 中文
本文提出了一种新颖的低复杂度基于校验子线性规划(SB-LP)译码算法,用于量子低密度奇偶校验码的译码。在码容量模型下,SB-LP译码器可作为独立译码器使用;然而,在作为SB最小和(SB-MS)译码的后处理步骤时,其表现尤为强大。在后一种情况下,所提出的译码器被证明能够显著降低SB-MS译码器在洪水式和分层式SB-MS调度下的错误平层。此外,引入了一种早期停止准则,用于决定何时激活SB-LP算法,避免为SB-MS译码器执行预定义的最大迭代次数。仿真结果表明,对于一些示例超图和广义自行车(GB)码,所提出的译码器在相同总译码迭代次数下,可将错误平层降低一到三个数量级。此外,对于GB码类,研究表明随着码的最小距离增加,所提出译码器提供的逻辑误码率也随之改善,表明该方案具有可扩展性。在电路级噪声模型下,研究表明,当洪水式SB-MS用作初步步骤时,SB-LP译码器虽然不能完全取代有序统计译码(OSD)的需求,但能减少对OSD后处理器的调用次数,这直接影响了整体延迟。此外,该方法提供了一种校验子匹配译码器,并改进了双变量自行车码(距离6至18)的逻辑误码率精度,尤其是在低误码率下,相比信念传播+OSD基准有所提升。
Keyword:
Decoding
Codes
Iterative decoding
Qubit
Floors
Error analysis
Noise
Linear programming
Error correction codes
Benchmark testing
Linear programming-based decoding
quantum low-density parity-check (LDPC) codes
quantum error correction

期刊

I
IEEE Transactions on Quantum Engineering
IF:
4.6
论文数:
52
被引数:
0

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