Modelling constant weight codes using tabu search
نویسندگان
چکیده
منابع مشابه
Optimal Constant Weight Codes
A new class of binary constant weight codes is presented. We establish new lower bound and exact values on A(n, 2k, k + 1), in particular, A(30, 12, 7) = 9, A(48, 16, 9) = 11, A(51,16, 9) = 12, A(58, 18, 10) = 12. An ( ) w d n , , constant weight binary code is a code of length n , code distance d in which all code words have the same number of “ones” . The number of “ones” is w . We will denot...
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Binary constant-weight codes have been extensively studied, due to both their numerous applications and to their theoretical significance. In particular, constant-weight codes have been proposed for error correction in store and forward. In this paper, we introduce constant-weight array codes (CWACs), which offer a tradeoff between the rate gain of general constant-weight codes and the low deco...
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Let A3(n, d,w) denote the maximum cardinality of a ternary code with length n, minimum distance d, and constant Hamming weight w. Methods for proving upper and lower bounds on A3(n, d,w) are presented, and a table of exact values and bounds in the range n ≤ 10 is given.
متن کاملUnderstanding Linear Codes of Constant Weight Using Virtual Linear Codes
In this paper we determine completely the structure of linear codes over Z/NZ of constant weight. Namely, we determine exactly which modules underlie linear codes of constant weight, and we describe the coordinate functionals involved. The weight functions considered are: Hamming weight, Lee weight, and Euclidean weight. We prove a general uniqueness theorem for virtual linear codes of constant...
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Equidistant constant weight codes are studied in this paper. The dual distance distribution of equidistant constant weight codes is investigated and used to obtain upper bounds on the size of such codes as well as equidistant codes in general. ? 2003 Elsevier Science B.V. All rights reserved.
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ژورنال
عنوان ژورنال: Applied Mathematical Modelling
سال: 1997
ISSN: 0307-904X
DOI: 10.1016/s0307-904x(97)00019-x