Title :
Upper bounds and Hamming spheres under the DC constraint
Author :
Waldman, Helio ; Nisenbaum, Eduardo
Author_Institution :
Dept. of Commun., State Univ. of Campinas, Brazil
fDate :
7/1/1995 12:00:00 AM
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
Keywords :
binary sequences; error correction codes; DC constraint; DC-constrained spaces; Hamming bounds; Hamming spheres; Plotkin bounds; binary DC-free codes; code rates; error correcting codes; identification; minimal Hamming spheres; size calculation; upper bounds; Binary sequences; Conferences; Eigenvalues and eigenfunctions; Error correction codes; Hamming distance; Information theory; Scholarships; Upper bound;
Journal_Title :
Information Theory, IEEE Transactions on
