Results 91 to 100 of about 29,520 (201)

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

Low-Density Arrays of Circulant Matrices: Rank and Row-Redundancy Analysis, and Quasi-Cyclic LDPC Codes

, 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  

An efficient radix-4 Quasi-cyclic shift network for QC-LDPC decoders

IEICE Electronics Express, 2014
Sabooh Ajaz, Hanho Lee
openaire   +2 more sources

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

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

QC-MDPC-McEliece: A public-key code-based encryption scheme based on quasi-cyclic moderate density parity check codes

, 2014
The McEliece cryptosystem is the oldest code-based cryptosystem and itis believed to resist to quantum attacks. The system was proposed in1978 by Robert McEliece. It uses irreducible binary Goppa codes, butit can be instantiated with any family of linear codes for which anefficient decoder is available.
openaire   +1 more source

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

Entropy (Basel), 2023
Li Y, Guo Y.
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  

Provable secure mutual RFID authentication protocol based on QC-MDPC code

Tongxin xuebao, 2014
The security of radio frequency identification (RFID) has become an increasingly severe issue.In order to protect the security of information interaction in wireless channel of RFID system,a mutual RFID authentication secure protocol was proposed.It was ...
Ze-hui LI, Ya-tao YANG, Zi-chen LI
doaj