Results 61 to 70 of about 285 (176)

Floor Scale Modulo Lifting for QC-LDPC codes

open access: yesCoRR, 2017
7 pages, 2 ...
Nikita Polyanskii   +2 more
openaire   +2 more sources

非二进制准循环低密度校验码的性能研究

open access: yesGuangtongxin yanjiu, 2012
为提高100Gbit/s光通信系统的传输距离,构造了高增益的NB-QC-LDPC(非二进制准循环低密度校验码),这种纠错码构建在伽罗华域上,适合于采用QPSK(正交相移键控)或DQPSK(差分正交相移键控)调制格式的100Gbit/s系统。文章采用对数傅里叶和积译码算法分析了NB-QC-LDPC的误码性能。结果表明,与二进制准循环低密度校验码相比,码长为500、码率为0.8的NB-QC-LDPC,在误码率为10-8时可提供约1dB的编码增益。同样,在误码率为10-8时,若码率从0.9降低至0.8,NB ...
林智强, 张建勇
doaj  

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

open access: yesIEEE 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   +3 more
doaj   +1 more source

Research on LDPC Coding for Free Space Optical Communication with Modified Bessel-Gaussian Beams Based on K-distribution

open access: yesMATEC Web of Conferences, 2018
We investigate the performance of low-density parity-check (LDPC) coding for free space optical communication (FSO) with modified Bessel-Gaussian (MBG) beams based on K-distribution.
Wang Jin   +3 more
doaj   +1 more source

光通信中基于伽罗华域的QC-LDPC码构造方法

open access: yesGuangtongxin yanjiu, 2014
为了满足光通信系统对纠错码高码率、低误码率的要求,基于伽罗华域中域的特征提出了一种结构简单、易于编码并且可以有效避免四环的QC-LDPC(准循环低密度奇偶校验)码的新构造方法。并运用该方法构造了适用于光通信系统的FCQC-LDPC(基于域特征的QC-LDPC)(3969,3729)码。仿真结果表明,在误码率=10-7时,所构造的码率为0.937的FC-QCLDPC(3969,3729)码的NCG(净编码增益)比QC-LDPC(4288,4020)码提高了约0.15dB,比Linshu-QC-LDPC ...
黄胜, 贾雪婷, 田方方, 袁建国
doaj  

On the Design and Implementation and Evaluation of Euclidean Geometry Quasi-Cyclic LDPC Codes for NAND Flash Memories

open access: yesIEEE Open Journal of the Communications Society
As data storage demands continue to grow, ensuring the reliability of NAND flash devices after a large number of Program/Erase (P/E) cycles have elapsed has become a critical requirement.
G. Achala   +3 more
doaj   +1 more source

On the lifting degree of girth-8 QC-LDPC codes

open access: yesDesigns, Codes and Cryptography
The lifting degree and the deterministic construction of quasi-cyclic low-density parity-check (QC-LDPC) codes have been extensively studied, with many construction methods in the literature, including those based on finite geometry, array-based codes, computer search, and combinatorial techniques.
Haoran Xiong   +3 more
openaire   +2 more sources

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