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提出了Z_2上矩阵的列间距、多比特扩散矩阵、偏移量等概念,并给出了一些性质。根据这些性质,对多比特扩散码中最大相关度作了较深入的研究,得到了一些很有价值的结论。
The concepts of column spacing, multi-bit diffusion matrix and offset of matrix on Z_2 are proposed and some properties are given. Based on these properties, we make a more in-depth study on the maximum degree of correlation in multi-bit spreading codes and obtain some valuable conclusions.