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An alternative to the Hamming code in the class of SEC-DED codes in semiconductor memory

机译:半导体存储器中SEC-DED码类中的汉明码的替代方法

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摘要

The Pi code constructed by V.I. Panchenko (1987) is studied. The Pi code as an alternative to the Hamming code in the class of single-error-correcting and double-error-detecting codes (SEC-DED codes) is also considered. The Pi code has a smaller number of words of weight 4 and provides a larger probability of triple-independent-error detection than the shortened Hamming code with the same parameters. Shortening algorithms for the Pi code are proposed, and parity check matrices of the (39,32), (72,64), (137,128) shortened Pi codes are constructed. The obtained codes can detect byte errors of length 4. The parity check matrices of the Pi code have more 1's in rows than corresponding matrices of the Hamming code. The Pi code is a reasonable alternative to the Hamming code in the class of SEC-DED codes.
机译:V.I.构造的Pi代码Panchenko(1987)被研究。在单错误校正和双错误检测代码(SEC-DED代码)类别中,还考虑使用Pi代码替代汉明代码。与具有相同参数的缩短汉明码相比,Pi码具有较少数量的权重4字,并提供更大的三次独立错误检测概率。提出了Pi码的缩短算法,构造了(39,32),(72,64),(137,128)个缩短Pi码的奇偶校验矩阵。所获得的代码可以检测到长度为4的字节错误。与汉明代码的相应矩阵相比,Pi代码的奇偶校验矩阵在行中具有更多的1。在SEC-DED代码类别中,Pi代码是Hamming代码的合理替代方案。

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