Optimized Puncturing of the Check Matrix for Rate-Compatible LDPC Codes
In the wireless communication system, it is necessary to change the transmitted code word or code rate in real time according to the channel environment, designing and implementing rate compatible codes is of great practical significance.
Zhang Liang, Meng Jiahui, Zhao Danfeng
doaj +1 more source
Short Blocklength Nonbinary Raptor-Like LDPC Coding Systems Design and Simulation
This paper explores an efficient rate-adaptive error correction coding scheme with a nonbinary (NB) $\mathrm {GF}(2^{q})$ extension of Raptor-like (RL) quasi-cyclic (QC) subclass of Low-Density Parity-Check (LDPC) codes.
Jakub Hyla, Wojciech Sulek
doaj +1 more source
Construction Method of QC-LDPC Codes with Big Girth for Fast Encoding [PDF]
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
Design and Implementation of a Highly Efficient Quasi-Cyclic Low-Density Parity-Check Transceiving System Using an Overlapping Decoder. [PDF]
Sun Y +5 more
europepmc +1 more source
Quantum LDPC Codes Based on Cocyclic Block Matrices. [PDF]
Li Y, Guo Y.
europepmc +1 more source
基于等差矩阵的性质特征,提出了一种QC-LDPC(准循环低密度奇偶校验)码的新颖构造方法。该构造方法易于有效编译码,具有良好的围长特性,可有效避免四环,使生成的码字不受短环的干扰,且在硬件实现方面可节省存储空间。仿真结果表明:当误码率达到10-7时,该构造方法造出的高码率QC-LDPC(3780,3542)码与ITU-T G.975中的RS(255,239)码相比,其净编码增益提高了约2.1dB,具有更好的纠错性能;与QC-LDPC(4221,3956)码相比,净编码增益提高了0.35dB。
黄胜, 田方方, 袁建国, 田凯
doaj
Quantum Coding via Quasi-Cyclic Block Matrix. [PDF]
Li Y, Li JY.
europepmc +1 more source
Explicit construction of girth-eight QC-LDPC codes and its application in CRT method
For arbitrary code lengths of the form PL(P≥3L<sup>2</sup>/4+L-1),a new family of (4,L)-regular quasi-cyclic (QC) low-density parity-check (LDPC) codes was proposed explicitly with girth ight.Employing the new code as a component code in the ...
Guo-hua ZHANG, Rong SUN, Xin-mei WANG
doaj +2 more sources
Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime. [PDF]
Fan X, Niu Q, Zhao T, Guo B.
europepmc +1 more source
Analysis and Optimization of a General Linking Matrix for JSCC Scheme Based on Double LDPC Codes. [PDF]
Chen Q, Xu Z, Wu H, Cai G.
europepmc +1 more source

