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Upper bounds and Hamming spheres under the DC constraint |
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| Authors: | Waldman H. Nisenbaum E. |
| Affiliation: | Dept. of Commun., State Univ. of Campinas; |
| Abstract: | Upper bounds on the rate of codes in DC-constrained spaces are derived for imbalances 3, 4, and 5. The new bounds are based on the identification and size calculation of the minimal Hamming spheres. A new combination of the Hamming and Plotkin (1960) bounds for constrained spaces is obtained |
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