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arXiv 2610.15420cs.ITmath.IT
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正码率下带删除译码的未检测错误指数的上界

An Upper Bound to the Undetected Error Exponent with Erasure Decoding at Positive Rates

University of Cambridge(剑桥大学);University of Brescia(布雷西亚大学);Universitat Politècnica de Catalunya(加泰罗尼亚理工大学)

Seyed AmirPouya Moeini, Marco Dalai, Albert Guillén i Fàbregas

AI总结:

该研究针对离散无记忆信道带删除译码的未检测错误指数问题,采用Somekh-Baruch的带助手辅助论证推导正码率下的上界,可恢复Telatar的紧码率零 converse,数值示例显示其对直线界的改进严格。

摘要:

我们研究离散无记忆信道在带删除译码下的未检测错误指数。假设未检测错误概率和删除概率均趋于零,我们推导了正码率下未检测错误指数的一个上界。该上界采用Somekh-Baruch的带助手辅助论证,其中辅助输出为译码器提供码字列表;它可恢复Telatar的紧码率零 converse,且至少与直线界一样紧。数值示例表明,其对直线界的改进可以是严格的。

英文摘要:

We study the undetected-error exponent of discrete memoryless channels with erasure decoding. Assuming that the undetected-error and erasure probabilities vanish, we derive an upper bound on the undetected-error exponent at positive rates. The bound uses Somekh-Baruch's genie-aided argument where an auxiliary output provides the decoder with a list of codewords. It recovers Telatar's tight rate-zero converse and is at least as tight as the straight-line bound. A numerical example shows that the improvement over the straight-line bound can be strict.

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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