نتایج جستجو برای: structural codes

تعداد نتایج: 469407  

Journal: :نقد ادب معاصر عربی 0
منصوره زرکوب محمد رحیمی خویگانی فاطمه گلی

structuralism analysis of literary texts is one of the most popular ways to analyze text from a twentieth century to. this time, the founder of this theory is “barthes”, he offered a model that based on five codes. this study that written by analytical and descriptive method is select the “tofigh hakims” short story by name: “satan wins” and tries to analyze it by structuralism view, the major ...

Journal: :JCM 2013
Wanquan Peng Chengchang Zhang

A new class of (2k, k, 1) convolutional codes is proposed based on the method that creating long codes by short ones in this paper, by embedding (2k, k) double loop cyclic codes in (2, 1, 1) convolutional codes. The structural mechanism of the codes is revealed by defining a state transition matrix and using algebraic method. It is then shown that the code structure is excellent in both proport...

2018
Ahlem Melakhessou Nuh Aydin Kenza Guenda

In this paper, we study skew constacyclic codes over the ring ZqR where R = Zq + uZq, q = p s for a prime p and u2 = 0. We give the definition of these codes as subsets of the ring ZqR . Some structural properties of the skew polynomial ring R[x, θ] are discussed, where θ is an automorphism of R. We describe the generator polynomials of skew constacyclic codes over R and ZqR. Using Gray images ...

1997
Yosef Kofman Ephraim Zehavi

The structural properties of a noncoherent coded system, which incorporates convolutional codes in conjunction with multiple symbol noncoherent detection, is presented in this second part of a two-part paper, where the performance analysis was provided in Part I. These convolutional codes are referred to as nd-convolutional codes and they provide a general framework for various noncoherent codi...

Journal: :civil engineering infrastructures journal 0
leila haj najafi ph.d. candidate, department of civil and environmental engineering, amirkabir university of technology, tehran, iran. mohsen tehranizadeh professor, department of civil and environmental engineering, amirkabir university of technology, tehran, iran.

this study attempts to answer the question of distinguishing appropriate intensity measure parameter for performance-based design or assessment, taking into account the efficiency aspect. the comprehensive comparative tables proposed in this paper could be an effective support in the decision making procedure for intensity measure selection, comprising most of the frequently utilized intensity ...

Journal: :CoRR 2015
Hojjat Mostafanasab Negin Karimi

Let $\mathbb{F}_p$ be a finite field and $u$ be an indeterminate. This article studies $(1-2u^2)$-constacyclic codes over the ring $\mathbb{F}_p+u\mathbb{F}_p+u^2\mathbb{F}_p$, where $u^3=u$. We describe generator polynomials of this kind of codes and investigate the structural properties of these codes by a decomposition theorem.

2000
Judy L. Walker

We investigate self-dual codes from a structural point of view. In particular, we study properties of critical indecomposable codes which appear in the spectrum of a self-dual code. As an application of the results we obtain, we revisit the study of self-dual codes of dimension at most 10.

Journal: :CoRR 2015
Ting Yao Minjia Shi Patrick Solé

In this paper, we study skew cyclic codes over the ring R = Fq + uFq + vFq + uvFq, where u 2 = u, v2 = v, uv = vu, q = p and p is an odd prime. We investigate the structural properties of skew cyclic codes over R through a decomposition theorem. Furthermore, we give a formula for the number of skew cyclic codes of length n over R.

2014
Joschi Brauchle

A general formula for the error-correcting radius of linear-algebraic multivariate interpolation decoding of folded Reed–Solomon (FRS) codes is derived. Based on this result, an improved construction of FRS codes is motivated, which can be obtained by puncturing Parvaresh–Vardy codes. The proposed codes allow decoding for all rates, remove the structural loss in decoding radius of the original ...

2014
Jian Gao XianFang Wang Fang-Wei Fu

In this paper, we introduce a new definitions of the Gray weight and the Gray map for linear codes over Z9+uZ9 with u 2 = u. Some results on self-dual codes over this ring are investigated. Further, the structural properties of quadratic residue codes are also considered. Two self-dual codes with parameters [22, 11, 5] and [24, 12, 9] over Z9 are obtained.

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