scholarly journals EXTENDED SUBCLASS OF CYCLIC SEPARABLE GOPPA CODES

2016 ◽  
Vol 15 (5) ◽  
pp. 6776-6784
Author(s):  
Ajay Sharma ◽  
O. P. VINOCHA
Keyword(s):  
Cyclic Codes ◽  
Goppa Codes ◽  
Goppa Code

In 2013[4]a new subclass of cyclic Goppa code with Goppa polynomial of degree 2 is presented by Bezzateev and Shekhunova. They proved that this subclass contains all cyclic codes of considered length. In the present work we consider a Goppa polynomial of degree three and proved that the subclass generated by this polynomial represent a cyclic, reversible and separable Goppa code.

scholarly journals Counting Irreducible Polynomials of Degree r over Fqn and Generating Goppa Codes Using the Lattice of Subfields of Fqnr

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Kondwani Magamba ◽  
John A. Ryan
Keyword(s):  
Irreducible Polynomial ◽  
Goppa Codes ◽  
Irreducible Polynomials ◽  
Goppa Code

The problem of finding the number of irreducible monic polynomials of degree r over Fqn is considered in this paper. By considering the fact that an irreducible polynomial of degree r over Fqn has a root in a subfield Fqs of Fqnr if and only if (nr/s,r)=1, we show that Gauss’s formula for the number of monic irreducible polynomials can be derived by merely considering the lattice of subfields of Fqnr . We also use the lattice of subfields of Fqnr to determine if it is possible to generate a Goppa code using an element lying in a proper subfield of Fqnr.

CYCLIC CODES THROUGH $B[X;\frac{a}{b}{\mathbb Z}_{0}]$, WITH $\frac{a}{b}\in {\mathbb Q}^{+}$ AND b = a+1, AND ENCODING

2012 ◽  
Vol 04 (04) ◽  
pp. 1250059 ◽  
Author(s):  
TARIQ SHAH ◽  
ANTONIO APARECIDO DE ANDRADE
Keyword(s):  
Positive Integer ◽  
Commutative Ring ◽  
Cyclic Codes ◽  
Bch Codes ◽  
Goppa Codes ◽  
Monoid Ring ◽  
Alternant Codes ◽  
Almost All

Let B[X; S] be a monoid ring with any fixed finite unitary commutative ring B and [Formula: see text] is the monoid S such that b = a + 1, where a is any positive integer. In this paper we constructed cyclic codes, BCH codes, alternant codes, Goppa codes, Srivastava codes through monoid ring [Formula: see text]. For a = 1, almost all the results contained in [16] stands as a very particular case of this study.

On extending Goppa codes to cyclic codes (Corresp.)

1975 ◽  
Vol 21 (6) ◽  
pp. 712-716 ◽  
Author(s):  
K. Tzeng ◽  
K. Zimmermann
Keyword(s):  
Cyclic Codes ◽  
Goppa Codes

scholarly journals Goppa codes over Edwards curves

2021 ◽  
Author(s):  
Giuseppe Filippone
Keyword(s):  
Singular Points ◽  
Goppa Codes ◽  
Goppa Code ◽  
Edwards Curves ◽  
Geometric Goppa Code ◽  
Generating Matrix ◽  
Edwards Curve

Abstract Given an Edwards curve, we determine a basis for the Riemann-Roch space of any divisor whose support does not contain any of the two singular points. This basis allows us to compute a generating matrix for an algebraic-geometric Goppa code over the Edwards curve.

A Large Class of p-Ary Cyclic Codes and Sequence Families

2010 ◽  
Vol E93-A (11) ◽  
pp. 2272-2277
Author(s):  
Zhengchun ZHOU ◽  
Xiaohu TANG ◽  
Udaya PARAMPALLI
Keyword(s):  
Large Class ◽  
Cyclic Codes

A Family of q-Ary Cyclic Codes with Optimal Parameters

2020 ◽  
Vol E103.A (3) ◽  
pp. 631-633
Author(s):  
Wenhua ZHANG ◽  
Shidong ZHANG ◽  
Yong WANG ◽  
Jianpeng WANG
Keyword(s):  
Cyclic Codes ◽  
Optimal Parameters

A class of constacyclic codes over the ring Z4[u,v]/ and their Gray images

Filomat ◽  
2019 ◽  
Vol 33 (8) ◽  
pp. 2237-2248 ◽  
Author(s):  
Habibul Islam ◽  
Om Prakash
Keyword(s):  
Cyclic Codes ◽  
Constacyclic Codes ◽  
Gray Maps ◽  
Permutation Equivalent ◽  
Quasi Cyclic Codes

In this paper, we study (1 + 2u + 2v)-constacyclic and skew (1 + 2u + 2v)-constacyclic codes over the ring Z4 + uZ4 + vZ4 + uvZ4 where u2 = v2 = 0,uv = vu. We define some new Gray maps and show that the Gray images of (1 + 2u + 2v)-constacyclic and skew (1 + 2u + 2v)-constacyclic codes are cyclic, quasi-cyclic and permutation equivalent to quasi-cyclic codes over Z4. Further, we determine the structure of (1 + 2u + 2v)-constacyclic codes of odd length n.

Sign in / Sign up

Export Citation Format

Share Document