LDPC_CODES

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Two constructions of LDPC codes based on pseudo-symplectic geometry over finite fields被引量：1
《The Journal of China Universities of Posts and Telecommunications》2018年第2期49-59,共11页Wang Xiuli Hao Yakun 
supported by the National Natural Science Foundation of China(61179026);Fundamental Research of the Central Universities of China Civil Aviation University of Science Special(3122016L005)
F（2v＋ 1） q Based on the pseudo-symplectic space over q of characteristics 2, combining the definition of low density parity check （LDPC） codes with the knowledge of graph theory, two kinds of LDPC codes with lar...
关键词：LDPC codes pseudo-symplectic geometry minimum distance GIRTH 
Probability stopping criterion for analog decoding of LDPC codes
《The Journal of China Universities of Posts and Telecommunications》2017年第1期35-39,共5页Zheng Hao Zhang Shuyi Li Lintao Gao Yuan Shao Liwei 
supported by the National Natural Science Foundation of China(61601027);the Guangdong Provincial Science and Technology Project(2015B010101002)
To detect uncorrectable frames and terminate the decoding procedure early, a probability stopping criterion for iterative analog decoding of low density parity check （LDPC） codes is proposed in this paper. By using ...
关键词：LDPC codes analog decoding early stopping probability stopping criterion 
Proof of retrievability based on LDPC codes
《The Journal of China Universities of Posts and Telecommunications》2015年第4期17-25,50,共10页Bian Jianchao Liu Huixia Luo Shoushan Zha Yaxing Li Wei 
supported by the National Natural Science Foundation of China (61121061)
In order to reduce the computational overhead of proof of retrievability（POR） scheme, a new POR scheme based on low-density parity-check（LDPC） codes is proposed, noted as LDPC-POR. In the model of PORs scheme, the...
关键词：POR LDPC PDP cloud storage 
Performance evaluation of multicast relay network using LDPC and convolutional channel codes along-with XOR network coding被引量：3
《The Journal of China Universities of Posts and Telecommunications》2012年第4期122-128,共7页Tariq Aziz Nasir Saleem Muhammad Iqba 
In this paper, we have compared the performance of joint network channel coding （JNCC） for multicast relay network using low density parity check （LDPC） codes and Convolutional codes as channel codes while exclusi...
关键词：cooperative relaying network coding multicast relay networks LDPC codes convolutional codes 
Replica horizontal-shuffled iterative decoding of low-density parity-check codes被引量：1
《The Journal of China Universities of Posts and Telecommunications》2010年第6期32-40,共9页YANG Yang HUANG Jian-zhong TONG Sheng WANG Xin-mei 
For practical considerations,it is essential to accelerate the convergence speed of the decoding algorithm used in an iterative decoding system. In this paper,replica versions of horizontal-shuffled decoding algorithm...
关键词：REPLICA shuffled decoding LDPC codes EXIT chart convergence speed 
Novel modified min-sum decoding algorithm for low-density parity-check codes被引量：2
《The Journal of China Universities of Posts and Telecommunications》2010年第4期1-5,46,共6页LIU Hai-yang , QU Wen-ze, LIU Bin, LI Jiang-peng, LUO Shi-dong, CHEN Jie Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China 
supported by the Major State Basic Research Development Program of China (2009CB320300)
The problem of improving the performance of min-sum decoding of low-density parity-check （LDPC） codes is considered in this paper. Based on min-sum algorithm, a novel modified min-sum decoding algorithm for LDPC cod...
关键词：LDPC codes sum-product algorithm min-sum algorithm modified min-sum algorithm 
Construction of LDPC codes over GF(q) with modified progressive edge growth被引量：1
《The Journal of China Universities of Posts and Telecommunications》2009年第5期103-106,113,共5页CHEN Xin , MEN Ai-dong, YANG Bo, QUAN Zi-yi School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 
supported by the National Natural Science Foundation of China (60672087)
A parity check matrix construction method for constructing a low-density parity-check （LDPC） codes over GF（q） （q〉2） based on the modified progressive edge growth （PEG） algorithm is introduced. First, the nonz...
关键词：LDPC codes over GF（q） progressive edge growth large minimum distance 
Performance of degree distribution based HARQ scheme for LDPC-coded OFDM system被引量：3
《The Journal of China Universities of Posts and Telecommunications》2009年第1期47-50,共4页LI Xue-hua CAO Yi-qing LI Zhen-song YANG Da-cheng 
supported by the National Natural Science Foundation of China (60501007).
This article studies the degree distribution property of low density parity check （LDPC） codes by Gaussian approximation （GA） and presents an efficient hybrid automatic repeat quest （HARQ） scheme for LDPC-coded ...
关键词：LDPC codes HARQ degree distribution GA OFDM 
Belief-Propagation-Approximated Decoding of Low-Density Parity-Check Codes被引量：4
《The Journal of China Universities of Posts and Telecommunications》2004年第1期24-28,共5页SONGHui-shi ZHANGPing 
ThisworkissupportedbytheNationalHighTechnologyResearchandDevelopmentProgram"863"ofChina (No.2 0 0 1AA1 2 30 1 6) ;andbytheBeijingSAMSUNGTelecomR&DCenter.
In this paper, we propose a new reduced-complexity decoding algorithm of Low-Density Parity-Check (LDPC) codes, called Belief-Propagation-Approximated (BPA) algorithm, which utilizes the idea of normalization and tran...
关键词：LDPC codes BPA algorithm NORMALIZATION 
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