Results 61 to 70 of about 803 (134)

Girth Analysis of Tanner’s (3, 17)-Regular QC-LDPC Codes Based on Euclidean Division Algorithm

IEEE Access, 2019
In this paper, the girth distribution of the Tanner’s (3, 17)-regular quasi-cyclic LDPC (QC-LDPC) codes with code length $17p$ is determined, where $p$ is a prime and $p \equiv 1~(\bmod ~51)$ .
Hengzhou Xu, Yake Duan, Xiaoxiao Miao, Hai Zhu   +3 more
doaj   +1 more source

On the girth of Tanner (3,7) quasi-cyclic LDPC codes [PDF]

Transactions on Combinatorics, 2012
S. Kim, et al, have been analyzed the girth of some algebraically structured quasi-cyclic (QC) low-density parity-check (LDPC) codes, i.e. Tanner (3,5) of length 5p, where p is a prime of the form 15m+1. In this paper, by extension this method to Tanner (
Mohammad Gholami, Fahime Sadat Mostafaiee   +1 more
doaj  

Lower Bounds on the Lifting Degree of QC-LDPC Codes by Difference Matrices

IEEE Access, 2018
In this paper, we define two “difference matrices” which correspond to an exponent matrix. We present necessary and sufficient conditions for these difference matrices to have quasi-cyclic low-density parity-check codes (QC-LDPC) codes with
Farzane Amirzade, Mohammad-Reza Sadeghi
doaj   +1 more source

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  

Quantum Coding via Quasi-Cyclic Block Matrix. [PDF]

Entropy (Basel), 2023
Li Y, Li JY.
europepmc   +1 more source

Modified CC-PEG Algorithm for Protograph-Based QC-LDPC Codes Over Non-Uniform Channel

IEEE Access
In this paper, we propose the modified cycle-concentrating progressive-edge-growth (CC-PEG) algorithm for lifting protograph-based quasi-cyclic low-density parity-check (QC-LDPC) codes over the non-uniform additive white Gaussian noise (AWGN) channel. By
Hyeon-Bhin Lee, Jae-Won Kim
doaj   +1 more source

Design and Implementation of a Highly Efficient Quasi-Cyclic Low-Density Parity-Check Transceiving System Using an Overlapping Decoder. [PDF]

Sensors (Basel), 2023
Sun Y, Zhao L, Li J, Zhang Z, Yang X, Bu X.   +5 more
europepmc   +1 more source

QC-LDPC Codes Construction by Concatenating of Circulant Matrices as Block-Columns

International Journal of Information and Communication Technology Research, 2016
In this paper a new low complexity method for constructing binary quasi-cyclic low-density parity-check (QC-LDPC) codes is introduced. In the proposed method, each block-column of the parity check matrix H is made by a circulant matrix in a way that the ...
Mohammad Hesam Tadayon, Mohammad Mohammadi   +1 more
doaj  

Quantum LDPC Codes Based on Cocyclic Block Matrices. [PDF]

Entropy (Basel), 2023
Li Y, Guo Y.
europepmc   +1 more source

On Quasi-Cyclic Codes of Index 3. [PDF]

Entropy (Basel)
Abdukhalikov K, Shat RM.
europepmc   +1 more source