Acta mathematica scientia,Series A ›› 1999, Vol. 19 ›› Issue (4): 368-372.
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Abstract:
By using the dual distance distribution and its properties for binary code C with length n and number of codewords M, the Althofer-Sillke inequality is improved when M is odd. The exact values of minimum average Hamming distance of C are determined when M equals 2n-1 or 2n-1-1.
Key words: Hammingdistance, Dualdistancedistribution, Alth¨oferSillkeinequality
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Xia Shutao Fu Fangwei. On the average hamming distance and variance for binary codes[J].Acta mathematica scientia,Series A, 1999, 19(4): 368-372.
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