Results 81 to 90 of about 92,025 (163)
MATEC 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
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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 +3 more
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Investigation of punctured LDPC codes and time-diversity on free-space optical links [PDF]
, 2011 In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is
Ghassemlooy, Zabih +4 more
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Guangtongxin 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
IEEE Open Journal of the Communications SocietyAs 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
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SIMPLE RATELESS CHANNEL CODING BERBASIS QC-LDPC CODES 5G NEW RADIO UNTUK INTERNET OF THINGS [PDF]
, 2019 Telekomunikasi generasi kelima 5G New Radio (5G-NR) menggunakan quasi-cyclic Low Density Parity Check (QC-LDPC) codes sebagai channel coding untuk transmisi data karena memiliki kemampuan error correction yang baik serta bisa adaptif terhadap kanal ...
ARINI FITRI
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Design of Multiple-Edge Protographs for QC LDPC Codes Avoiding Short Inevitable Cycles
, 2013 There have been lots of efforts on the construction of quasi-cyclic (QC) low-density parity-check (LDPC) codes with large girth. However, most of them focus on protographs with single edges and little research has been done for the construction of QC ...
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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
Short Blocklength Nonbinary Raptor-Like LDPC Coding Systems Design and Simulation
IEEE AccessThis 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
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Design and Implementation of Multi-rate QC-LDPC Decoder [PDF]
, 2011 低密度奇偶校验码(ldPC)是目前最有效的差错控制手段之一,而其中准循环ldPC码(QC-ldPC)应用最为广泛。提出了一种通用的多码率QC-ldPC译码器设计方法,并在fPgA上完成了实现和测试。测试结果表明,该多码率译码器在资源占用不超过2种码率译码器资源之和的前提下能够有效支持至少3种码率;且工作时钟在110 MHz时,固定迭代次数为16次,该译码器的吞吐率能保持在110 Mb/S以上。Low-density parity-check(LDPC) code is one of the most ...
陈赟, 赵明, 陈翔, 王京
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