Robust codes can effectively detect jamming in $q$ -ary memories for $q=2^t$ . When $q$ is not a power of two, a binary information word has to be converted into a $q$ -ary word prior to the encoding. This conversion expurgates the code since some of the $q$ -ary codewords are never used. Unless properly designed, expurgation can significantly degrade the effectiveness of the code in terms of its error detection capability. This article analyzes the error masking probability of an expurgated robust code when applied to $q$ -ary memories. It is shown that by wisely designing the converter, this degradation can be minimized, and in some cases, the code's efficiency can be superior to the original code.

中文翻译：

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使用Qary压缩鲁棒代码保护多级内存免受干扰

健壮的代码可以有效地检测到干扰 $ q $ -ary的记忆 $ q = 2 ^ t $ 。什么时候$ q $ 不是2的幂，则必须将二进制信息字转换为 $ q $ -ary字在编码之前。由于某些$ q $ -ary码字从不使用。除非经过适当设计，否则清除可能会严重降低代码的错误检测能力。本文分析了被应用到扩展的鲁棒代码的错误掩盖概率。$ q $ -ary回忆。结果表明，通过明智地设计转换器，可以将这种降级最小化，并且在某些情况下，代码的效率可以优于原始代码。