Results 1 to 10 of about 20,810 (117)

On Double Cyclic Codes over Finite Chain Rings for DNA Computing [PDF]

open access: yesEntropy
Let e be a fixed positive integer and n1,n2 be odd positive integers. The main objective of this article is to investigate the algebraic structure of double cyclic codes of length (n1,n2) over the finite chain ring Re = F4e+vF4e, where v2=0.
Shakir Ali   +4 more
doaj   +2 more sources

An Algorithm for Finding Self-Orthogonal and Self-Dual Codes Over Gaussian and Eisenstein Integer Residue Rings Via Chinese Remainder Theorem

open access: yesIEEE Access, 2023
A code over Gaussian or Eisenstein integer residue ring is an additive group of vectors with entries in this integer residue ring which is closed under the action of constant multiplication by the Gaussian or Eisenstein integers. In this paper, we define
Hajime Matsui
doaj   +1 more source

On the Covering Radius of Codes over Zpk

open access: yesMathematics, 2020
In this correspondence, we investigate the covering radius of various types of repetition codes over Z p k ( k ≥ 2 ) with respect to the Lee distance.
Mohan Cruz   +2 more
doaj   +1 more source

Structured LDPC Codes over Integer Residue Rings

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
This paper presents a new class of low-density parity-check (LDPC) codes over ℤ2a represented by regular, structured Tanner graphs. These graphs are constructed using Latin squares defined over a multiplicative group of a Galois ring, rather than a ...
Marc A. Armand, Elisa Mo
doaj   +2 more sources

Linear codes and cyclic codes over finite rings and their generalizations: a survey

open access: yesElectronic Journal of Graph Theory and Applications, 2023
We survey a recent progress of cyclic codes over finite rings and their generalization to skew cyclic as well as skew cyclic codes with derivation over finite rings, focusing on structural properties of the codes.
Djoko Suprijanto
doaj   +1 more source

Linear Codes over Finite Rings

open access: yesTrends in Computational and Applied Mathematics, 2005
In this paper we present a construction technique of cyclic, BCH, alternat, Goppa and Srivastava codes over a local finite commutative rings with identity.
A.A. de Andrade, R. Palazzo Jr.
doaj   +1 more source

Constacyclic Codes over Finite Chain Rings of Characteristic p

open access: yesAxioms, 2021
Let R be a finite commutative chain ring of characteristic p with invariants p,r, and k. In this paper, we study λ-constacyclic codes of an arbitrary length N over R, where λ is a unit of R.
Sami Alabiad, Yousef Alkhamees
doaj   +1 more source

Duality of Codes Over Non-Unital Rings of Order Four

open access: yesIEEE Access, 2023
In this paper, we present a basic theory of the duality of linear codes over three of the non-unital rings of order four; namely $I$ , $E$ , and $H$ as denoted in (Fine, 1993).
Adel Alahmadi   +2 more
doaj   +1 more source

Matrix-Product Codes over Commutative Rings and Constructions Arising from σ,δ-Codes

open access: yesJournal of Mathematics, 2021
A well-known lower bound (over finite fields and some special finite commutative rings) on the Hamming distance of a matrix-product code (MPC) is shown to remain valid over any commutative ring R.
Mhammed Boulagouaz, Abdulaziz Deajim
doaj   +1 more source

On the State Approach Representations of Convolutional Codes over Rings of Modular Integers

open access: yesMathematics, 2021
In this study, we prove the existence of minimal first-order representations for convolutional codes with the predictable degree property over principal ideal artinian rings.
Ángel Luis Muñoz Castañeda   +2 more
doaj   +1 more source

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