Distance distribution of binary codes and the error probability of decoding

Alexander Barg; Andrew McGregor

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arXiv · cs/0407011

Distance distribution of binary codes and the error probability of decoding

Alexander Barg·Andrew McGregor

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Abstract

We address the problem of bounding below the probability of error under maximum likelihood decoding of a binary code with a known distance distribution used on a binary symmetric channel. An improved upper bound is given for the maximum attainable exponent of this probability (the reliability function of the channel). In particular, we prove that the ``random coding exponent'' is the true value of the channel reliability for code rate $R$ in some interval immediately below the critical rate of the channel. An analogous result is obtained for the Gaussian channel.

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Alexander Barg, Andrew McGregor. 2005-07-29. Distance distribution of binary codes and the error probability of decoding. https://arxiv.org/abs/cs/0407011

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