arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.09277cs.ITcs.LGmath.IT
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基于强化学习的极化码构造

Construction of Polar Codes with Reinforcement Learning

Stanford University(斯坦福大学)

Yun Liao, Seyyed Ali Hashemi, John Cioffi, Andrea Goldsmith

摘要:

本文将SCL解码器的极性码构造问题描述为一个迷宫穿越游戏,并利用强化学习技术进行求解。所提出的方法提供了一种新的技术,极化码的建设,不再依赖于排序和选择比特通道的可靠性。相反,该技术决定是否应以纯粹的顺序方式冻结输入位。在此技术下,优化SCL解码器的极化码构造和最大化穿越迷宫的期望奖励是等价的。仿真结果表明,标准的极化码结构,设计的连续消除解码器不再是最佳的SCL解码器的帧出错率。相比之下,模拟表明,通过合理的训练量,基于游戏的构造方法发现与标准构造相比,对于各种代码长度和解码器具有较低的帧出错率的代码构造。

英文摘要:

This paper formulates the polar-code construction problem for the successive-cancellation list (SCL) decoder as a maze-traversing game, which can be solved by reinforcement learning techniques. The proposed method provides a novel technique for polar-code construction that no longer depends on sorting and selecting bit-channels by reliability. Instead, this technique decides whether the input bits should be frozen in a purely sequential manner. The equivalence of optimizing the polar-code construction for the SCL decoder under this technique and maximizing the expected reward of traversing a maze is drawn. Simulation results show that the standard polar-code constructions that are designed for the successive-cancellation decoder are no longer optimal for the SCL decoder with respect to the frame error rate. In contrast, the simulations show that, with a reasonable amount of training, the game-based construction method finds code constructions that have lower frame-error rate for various code lengths and decoders compared to standard constructions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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