LDPC_CODES

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NEW CONSTRUCTIONS OF LDPC CODES BASED ON CIRCULANT PERMUTATION MATRICES FOR AWGN CHANNEL被引量：2
《Journal of Electronics(China)》2014年第2期85-91,共7页Song Zixi Zhang Lijun 
Supported by the National Natural Science Foundation of China(Nos.61271199,61172022)
Two new design approaches for constructing Low-Density Parity-Check(LDPC) codes are proposed.One is used to design regular Quasi-Cyclic LDPC(QC-LDPC) codes with girth at least 8.The other is used to design irregular L...
关键词：Circulant Permutation Matrices(CPMs) Euclidean geometry Error floor Irregular LDPC codes Quasi-cyclic 
QUASI-SYSTEMATIC BLOCK-CIRCULANT LDPC CODES
《Journal of Electronics(China)》2008年第5期641-646,共6页Xu Ying Wei Guo 
A class of Quasi-Systematic Block-Circulant Low-Density Parity-Check(QSBC-LDPC) codes is proposed.Block-circulant LDPC codes have been studied a lot recently,because the simple structures of their parity-check matrice...
关键词：Low-Density Parity-Check （LDPC） codes Quasi-systematic Block-circulant Recursive encoding Cyclic-shifting 
APPLICATION OF BEAM SEARCH FOR THE DECODING OF ONE CLASS OF LDPC CODES
《Journal of Electronics(China)》2008年第4期457-464,共8页Li Guangwen Feng Guangzeng 
the National Science Foundation of China(No.60472104).
For one class of Low-Density Parity-Check(LDPC)codes with low row weight in theirparity check matrix,a new Syndrome Decoding(SD)based on the heuristic Beam Search(BS),labeledas SD-BS,is put forward to improve the erro...
关键词：Low-Density Parity-Check （LDPC） codes Belief Propagation （BP） Beam Search （BS） Error pattern Pyndrome 
JOINT SOURCE-CHANNEL DECODING OF HUFFMAN CODES WITH LDPC CODES被引量：1
《Journal of Electronics(China)》2006年第6期806-809,共4页Mei Zhonghui Wu Lenan 
In this paper, we present a Joint Source-Channel Decoding algorithm (JSCD) for Low-Density Parity Check (LDPC) codes by modifying the Sum-Product Algorithm (SPA) to account for the source redun-dancy, which results fr...
关键词：Low-Density Parity Check codes （LDPC） Variable Length Codes （VLC） Huffman code Sum-Product Algorithm（SPA） Joint Source-Channel Decoding （JSCD） 
SPARSE SEQUENCE CONSTRUCTION OF LDPC CODES
《Journal of Electronics(China)》2005年第5期520-523,共4页He Shanbao Zhao Chunming Shi Zhihua 
Supported by Key Project of the National Natural Science Foundation of China (No.60496311).
This letter proposes a novel and simple construction of regular Low-Density Parity-Check (LDPC) codes using sparse binary sequences. It utilizes the cyclic cross correlation function of sparse sequences to generate co...
关键词：Block codes Low-Density Parity-Check（LDPC） codes Regular codes CONSTRUCTION 
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