The diametric theorem in Hamming spaces-optimal anticodes
The diametric theorem in Hamming spaces-optimal anticodes
复制标题
汉明空间中的直径定理-最优反码
DOI:
10.1109/isit.1997.613172
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
L. Khachatrian
中科院分区:
文献类型:
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作者:
R. Ahlswede;L. Khachatrian
For a Hamming space (/spl Xscr//sub /spl alpha///sup n/,d/sub H/), the set of n-length words over the alphabet /spl Xscr//sub /spl alpha//={0,1,...,/spl alpha/-1} endowed with the distance d/sub H/, which for two words x/sup n/=(x/sub 1/,...,x/sup n/), y/sup n/=(y/sub 1/,...,y/sub n/)/spl isin//spl Xscr//sub /spl alpha///sup n/ counts the number of different components, we determine the maximal cardinality of subsets with a prescribed diameter d or, in another language, anticodes with distance d. We refer to the result as diametric theorem.