Results 81 to 90 of about 21,382 (243)
Novel construction of QC-LDPC codes with modified 2-D GRS codes
Tongxin xuebao, 2015 The construction method for QC-LDPC (quasi-cyclic low density parity-check) code with modified two-dimensional generalized reed-solomon (2-D GRS) code is proposed using the generator polynomial of GRS code,so thus the constructed code can have better ...
Ming ZHAO, Xiao-lin ZHANG
doaj +2 more sources
On the Girth of (3,L) Quasi-Cyclic LDPC Codes based on Complete Protographs
, 2015 We consider the problem of constructing $(3,L)$ quasi-cyclic low-density parity-check (LDPC) codes from complete protographs. A complete protograph is a small bipartite graph with two disjoint vertex sets such that every vertex in the variable-node set ...
Divsalar, Dariush +2 more
core +1 more source
Low Power QC-LDPC Decoder Based on Token Ring Architecture
Energies, 2020 The article presents an implementation of a low power Quasi-Cyclic Low-Density Parity-Check (QC-LDPC) decoder in a Field Programmable Gate Array (FPGA) device. The proposed solution is oriented to a reduction in dynamic energy consumption.
Mateusz Kuc +2 more
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Comparison of Polar Decoders with Existing Low-Density Parity-Check and Turbo Decoders
, 2017 Polar codes are a recently proposed family of provably capacity-achieving error-correction codes that received a lot of attention. While their theoretical properties render them interesting, their practicality compared to other types of codes has not ...
Balatsoukas-Stimming, Alexios +2 more
core +1 more source
Multisource SWIPT-based coded cooperation:rate compatible codes and codeword splitting protocol
EURASIP Journal on Wireless Communications and Networking, 2020 To achieve a high reliable and energy-saving green communication, we investigate a multisource simultaneous wireless information and power transfer (SWIPT)-based coded cooperation where the relay can realize information decoding and energy harvesting ...
Shunwai Zhang, Lingjun Kong, Jun Li
doaj +1 more source
, 2012 This paper is concerned with general analysis on the rank and row-redundancy of an array of circulants whose null space defines a QC-LDPC code. Based on the Fourier transform and the properties of conjugacy classes and Hadamard products of matrices, we ...
Huang, Qin, Liu, Keke, Wang, Zulin
core
Construction Method of QC-LDPC Codes with Big Girth for Fast Encoding [PDF]
Jisuanji gongcheng, 2018 The sub-matrices on both diagonals of the right half of the check matrix are unit matrices.Existence of the deterministic unit matrix not only destroys the randomness of Quasie Cyclic-Low Density Parity Check(QC-LDPC) code,it leads to a certain loss of ...
PENG Haiying,YANG Jian,SUN Lijun
doaj
Optimization of NB QC-LDPC Block Codes and Their Performance Analysis
CoRR, 2020 26 ...
Irina E. Bocharova +4 more
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, 2010 This paper consists of three parts. The first part presents a large class of new binary quasi-cyclic (QC)-LDPC codes with girth of at least 6 whose parity-check matrices are constructed based on cyclic subgroups of finite fields.
Abdel-Ghaffar, Khaled +4 more
core
A reduction in the search space of QC-LDPC codes with girth 8
Journal of Algebraic Systems, 2020 Summary: In this paper, we define a structure to obtain exponent matrices of girth-8 QC-LDPC codes with column weight 3. Using the difference matrices introduced by Amirzade et al., we investigate necessary and sufficient conditions which result in a Tanner graph with girth 8.
Amirzade, F. +2 more
openaire +3 more sources