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Cyclicity of Binary Group Codes [PDF]

open access: yesEntropy
In this paper, we study the cyclicity of binary group codes, identifying them as ideals in a group algebra. We focus on the construction of ω|ω¯ codes, proving that they are self-dual group codes over the abelian group C2×Ck. We demonstrate that for even
Beatriz García García   +2 more
doaj   +2 more sources

Enumeration of Optimal Equidistant Codes

open access: yesMathematics, 2022
Problems of search and enumeration of binary and ternary equidistant codes are considered in the paper. We investigate some combinatorial algorithms and develop specialized computer packages to find non-equivalent optimal binary and ternary equidistant ...
Galina Bogdanova, Todor Todorov
doaj   +1 more source

An equivalence between network coding and index coding [PDF]

open access: yes2013 IEEE International Symposium on Information Theory, 2013
We show that the network coding and index coding problems are equivalent. This equivalence holds in the general setting which includes linear and non-linear codes. Specifically, we present an efficient reduction that maps a network coding instance to an index coding one while preserving feasibility.
Effros, Michelle   +2 more
openaire   +4 more sources

Denk Kodlar Arasındaki Permütasyonu Bulmak

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2014
McEliece sistemi [1] gibi bazı şifreleme sistemlerinde denk kodlar kullanılmaktadır ve bu sistemlerin güvenliği verilen iki kodun denk olup olmadığının tespitine ve eğer denk iseler aralarındaki permütasyonun bulunmasının zorluğuna dayanmaktadır [2].
Ekrem EMRE
doaj   +6 more sources

On the Equivalence of Interleavers for Turbo Codes [PDF]

open access: yesIEEE Wireless Communications Letters, 2015
Three of the most common interleavers for turbo codes (TCs) are dithered relative prime (DRP) interleavers, quadratic permutation polynomial (QPP) interleavers, and almost regular permutation (ARP) interleavers. In this paper, it is shown that DRP and QPP interleavers can be expressed in the ARP interleaver function form.
Garzon Bohorquez, Ronald   +2 more
openaire   +3 more sources

On bounded linear codes and the commutative equivalence

open access: yesTheoretical Computer Science, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carpi A., D'Alessandro F.
openaire   +4 more sources

A generalization of cyclic code equivalence algorithm to constacyclic codes

open access: yesDesigns, Codes and Cryptography, 2022
Recently, a new algorithm to test equivalence of two cyclic codes has been introduced which is efficient and produced useful results. In this work, we generalize this algorithm to constacyclic codes. As an application of the algorithm we found many constacyclic codes with good parameters and properties. In particular, we found 23 new codes that improve
Dev Akre   +3 more
openaire   +2 more sources

The equivalence of linear codes implies semi-linear equivalence

open access: yesDesigns, Codes and Cryptography, 2022
We prove that if two linear codes are equivalent then they are semi-linearly equivalent. We also prove that if two additive MDS codes over a field are equivalent then they are additively equivalent.
Ball, Simeon Michael, Dixon, James
openaire   +4 more sources

Theoretical analysis of the behavior of steel frame infilled with masonry walls by the diagonal strut method

open access: yesRevista IBRACON de Estruturas e Materiais, 2021
In the last decades, several studies have been developed regarding structures composed by frames infilled with masonry walls, proving the increase of lateral stiffness by the infill.
Alba Bruna Cintra De Grandi   +5 more
doaj   +1 more source

Characters and the equivalence of codes

open access: yesJournal of Combinatorial Theory, Series A, 1996
Let \(K\) be a finite field. A linear code of dimension \(k\) and block length \(n\) is a \(k\)-dimensional \(K\)-linear subspace \(C\) of the \(n\)-dimensional vector space \(K^n\) over \(K\). Two linear codes \(C_1\) and \(C_2\) in \(K^n\) are equivalent if there exists a monomial transformation \(T: K^n\to K^n\) such that \(T(C_1)= C_2 ...
Harold N. Ward, Jay A. Wood
openaire   +2 more sources

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