Results 21 to 30 of about 113,006 (300)
Smoothing of Binary Codes, Uniform Distributions, and Applications
Entropy, 2023 The action of a noise operator on a code transforms it into a distribution on the respective space. Some common examples from information theory include Bernoulli noise acting on a code in the Hamming space and Gaussian noise acting on a lattice in the ...
Madhura Pathegama, Alexander Barg
doaj +1 more source
Optical Code Construction of 2D Spectral/Spatial BIBD Codes for SAC-OCDMA Systems
Applied Sciences, 2021 Optical code division multiple access (OCDMA) shows limitations in terms of the inefficient bandwidth utilization and low spectral density with one-dimensional (1D) codes. To overcome these limitations, a novel design is presented using a two dimensional
Teena Sharma +5 more
doaj +1 more source
The (non-)existence of perfect codes in Lucas cubes
پژوهشهای ریاضی, 2022 A Fibonacci string of length $n$ is a binary string $b = b_1b_2ldots b_n$ in which for every $1 leq i < n$, $b_icdot b_{i+1} = 0$. In other words, a Fibonacci string is a binary string without 11 as a substring.
Azam Ghaleh Agha Babai,
doaj
On connected components and perfect codes of proper order graphs of finite groups [PDF]
Proceedings of the Estonian Academy of SciencesLet G be a finite group with the identity element e. The proper order graph of G, denoted by â* (G), is an undirected graph with a vertex set G \ {e}, where two distinct vertices x and y are adjacent whenever o(x) | o(y) or o(y) | o(x), where o(x) and ...
Huani Li, Shixun Lin, Xuanlong Ma
doaj +1 more source
Statistical downscaling with the downscaleR package (v3.1.0): contribution to the VALUE intercomparison experiment [PDF]
Geoscientific Model Development, 2020 The increasing demand for high-resolution climate information has attracted growing attention to statistical downscaling (SDS) methods, due in part to their relative advantages and merits as compared to dynamical approaches (based on regional climate ...
J. Bedia +9 more
doaj +1 more source
Product perfect codes and steganography [PDF]
Digital Signal Processing, 2009 A new coding technique to be used in steganography is evaluated. The performance of this new technique is computed and comparisons with the well-known theoretical upper bound, Hamming upper bound and basic LSB are established.
Helena Rifà-Pous, Josep Rifà
openaire +2 more sources
THE POSET STRUCTURES ADMITTING THE EXTENDED BINARY GOLAY CODE TO BE A PERFECT CODE
, 2019 Brualdi et al. [Codes with a poset metric, Discrete Math. 147 (1995) 57-72] introduced the concept of poset codes, and gave an example of poset structure which admits the extended binary Golay code to be a 4-error-correcting perfect P-code.
Kim, HK, Rho, Y, Oh, DY, Jang, C
core +2 more sources
Perfect codes in some products of graphs
Electronic Journal of Graph Theory and Applications, 2021 A r-perfect code in a graph G = (V(G),E(G)) is a subset C of V(G) for which the balls of radius r centered at the vertices of C form a partition of V(G).
Samane Bakaein +2 more
doaj +1 more source
Construction of Fractional Repetition Codes with Variable Parameters for Distributed Storage Systems
Entropy, 2016 In this paper, we propose a new class of regular fractional repetition (FR) codes constructed from perfect difference families and quasi-perfect difference families to store big data in distributed storage systems.
Hosung Park, Young-Sik Kim
doaj +1 more source
Color Visual Secret Sharing for QR Code with Perfect Module Reconstruction
Applied Sciences, 2019 Visual secret sharing is a secret sharing scheme where the decryption requires no computation. It has found many applications in online transaction security, privacy protection, and bar code security, etc.
Tao Liu, Bin Yan, Jeng-Shyang Pan
doaj +1 more source