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arXiv · 2602.01657

Decoding Golay Codes and their Related Lattices: A PAC Code Perspective

Yujun Ji·Ling Liu·Shanxiang Lyu·Chao Chen·Tao Dai·Baoming Bai
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Abstract

In this work, we propose a decoding method of Golay codes from the perspective of Polarization Adjusted Convolutional (PAC) codes. By invoking Forney's cubing construction of Golay codes and their generators $G^*(8,7)/(8,4)$, we found different construction methods of Golay codes from PAC codes, which result in an efficient parallel list decoding algorithm with near-maximum likelihood performance. Compared with existing methods, our method can get rid of index permutation and codeword puncturing. Using the new decoding method, some related lattices, such as Leech lattice $\Lambda_{24}$ and its principal sublattice $H_{24}$, can be also decoded efficiently.

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Yujun Ji, Ling Liu, Shanxiang Lyu, Chao Chen, Tao Dai, Baoming Bai. 2026-02-02. Decoding Golay Codes and their Related Lattices: A PAC Code Perspective. https://arxiv.org/abs/2602.01657

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