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arXiv 1602.05620cs.ITmath.IT
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Golay码在硬判决译码下的性能优于扩展Golay码

The Golay Code Outperforms the Extended Golay Code Under Hard-Decision Decoding

Jon Hamkins

摘要:

我们发现,二进制Golay码是稍微更有效的功率比扩展的二进制Golay码下的最大似然(ML),硬判决解码。事实上,如果来自扩展码的码字被发送,则与简单地忽略第24个符号并对前23个符号上的非扩展码使用ML解码器相比,不能实现更高的正确解码概率。这是如此,尽管使用最后一个符号有时会允许使用权重4纠正错误模式。据我们所知,扩展Golay代码的性能更差之前还没有被注意到,但值得注意的是,它是代码的扩展版本,在许多部署中一直是首选。

英文摘要:

We show that the binary Golay code is slightly more power efficient than the extended binary Golay code under maximum-likelihood (ML), hard-decision decoding. In fact, if a codeword from the extended code is transmitted, one cannot achieve a higher probability of correct decoding than by simply ignoring the 24th symbol and using an ML decoder for the non-extended code on the first 23 symbols. This is so, despite the fact that using that last symbol would allow one to sometimes correct error patterns with weight four. To our knowledge the worse performance of the extended Golay code has not been previously noted, but it is noteworthy considering that it is the extended version of the code that has been preferred in many deployments.

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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