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arXiv 1505.02111cs.ITmath.IT
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Reed-Solomon码在Johnson半径范围内的功率译码

Power Decoding Reed--Solomon Codes Up to the Johnson Radius

Johan Rosenkilde

摘要:

功率解码或“使用虚拟交织的解码”是用于解码高达苏丹半径的里德-所罗门码的技术。自该方法诞生以来,它一直是一个悬而未决的问题,如果它是可能使用这种方法来解码到约翰逊半径-古鲁斯瓦米-苏丹算法的解码半径。在本文中,我们表明,这可以通过将一个概念的多重性。作为原来的电源解码,该算法是一个一次通过算法:解码后立即从解决移位寄存器类型的方程,我们可以在准线性时间内完成。这是一个“部分有界距离解码算法”,因为它将无法返回一个码字的一些错误模式在其解码半径内,我们调查其失败的行为理论上,以及模拟结果。这是一个扩展版本,我们还展示了如何使用重新编码技术或综合征制定的方法可以更快。

英文摘要:

Power decoding, or "decoding using virtual interleaving" is a technique for decoding Reed--Solomon codes up to the Sudan radius. Since the method's inception, it has been an open question if it is possible to use this approach to decode up to the Johnson radius -- the decoding radius of the Guruswami--Sudan algorithm. In this paper we show that this can be done by incorporating a notion of multiplicities. As the original Power decoding, the proposed algorithm is a one-pass algorithm: decoding follows immediately from solving a shift-register type equation, which we show can be done in quasi-linear time. It is a "partial bounded-distance decoding algorithm" since it will fail to return a codeword for a few error patterns within its decoding radius; we investigate its failure behaviour theoretically as well as give simulation results. This is an extended version where we also show how the method can be made faster using the re-encoding technique or a syndrome formulation.

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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