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Some Necessary Conditions for Codes to Be Good for Error Detection

机译:代码能够很好地进行错误检测的一些必要条件

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摘要

Codes for error detection on a q-ary symmetric channel are studied. Whether a code is good or not for error detection (in the technical sense) depends on the structure of the code. For some combinations of the main parameters length, size, and minimum distance, all code are good and for some other combinations all are ugly (stronger than not good). The purpose of this paper is to give bounds on the parameters for codes that are not good for error detection. In particular, it is shown that if the minimum distance is below some bound, which depends on the length and size of the code as well as a lower bound on the number of codewords of minimum distance, then the code is ugly and, hence, not good for error detection.
机译:研究了用于在q元对称信道上进行错误检测的代码。代码是否适合错误检测(从技术意义上来说)取决于代码的结构。对于一些主要参数的长度,大小和最小距离的组合,所有代码都不错,而对于某些其他组合,它们都很难看(强于不好)。本文的目的是为不利于错误检测的代码提供参数的界限。特别地,表明如果最小距离在某个界限以下,这取决于代码的长度和大小以及最小距离的代码字数的下限,则该代码是丑陋的,因此,不利于错误检测。

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