LDPC_CODES

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Construction of Protograph LDPC Codes Based on the Convolution Neural Network被引量：1
《China Communications》2023年第5期84-92,共9页Zhiyuan Xiao Liguang Li Jin Xu Jin Sha 
supported in part with the Project on the Industry Key Technologies of Jiangsu Province(No.BE2017153);the Industry-University-Research Fund of ZTE Corporation.
This paper presents an intelligent protograph construction algorithm.Protograph LDPC codes have shown excellent error correction performance and play an important role in wireless communications.Random search or manua...
关键词：LDPC codes protograph codes iterative decoding threshold neural network 
A New HARQ Scheme for 5G Systems via Interleaved Superposition Retransmission
《China Communications》2023年第4期1-11,共11页Qianfan Wang Li Chen Xiao Ma 
supported by the National Natural Science Foundation of China(No.61971454 and No.62071498);the Guangdong Basic and Applied Basic Research Foundation(No.2023A1515011056)。
Within the framework of the 5G new radio(NR),we propose a new hybrid automatic repeat request(HARQ)scheme to improve the throughput performance.The difference between the proposed scheme and the conventional one lies ...
关键词：5G NR HARQ LDPC codes superposition retransmission 
Low-Density Parity-Check Codes:Highway to Channel Capacity被引量：3
《China Communications》2023年第2期235-256,共22页Liyuan Song Shuyan Yu Qin Huang 
supported in part by the National Natural Science Foundation of China(No.62071026,No.62201152 and No.61941106);the Natural Science Foundation of Fujian Province(No.2021J05034);Key Project of Science and Technology Innovation of Fujian Province(No.2021G02006)。
Low-density parity-check(LDPC)codes are not only capacity-approaching,but also greatly suitable for high-throughput implementation.Thus,they are the most popular codes for high-speed data transmission in the past two ...
关键词：LDPC codes SPARSITY high-speed MESSAGE-PASSING cycles trapping sets quasi-cyclic 
Joint Source-Channel Coding for 6G Communications被引量：4
《China Communications》2022年第3期101-115,共15页Yanfei Dong Jincheng Dai Kai Niu Sen Wang Yifei Yuan 
supported by National Natural Science Foundation of China(No.92067202,No.62001049,&No.62071058);Beijing Natural Science Foundation under Grant 4222012;Beijing University of Posts and Telecommunications-China Mobile Research Institute Joint Innovation Center。
In order to provide ultra low-latency and high energy-efficient communication for intelligences,the sixth generation(6G)wireless communication networks need to break out of the dilemma of the depleting gain of the sep...
关键词：6G joint source and channel coding doubel LDPC codes doubel polar codes 
Ensemble of High Performance Structured Binary Convolutional LDPC Codes with Moderate Rates被引量：1
《China Communications》2020年第10期195-205,共11页Liwei Mu 
the National Natural Science Foundation of China(No.61401164)。
An algebraic construction methodology is proposed to design binary time-invariant convolutional low-density parity-check(LDPC)codes.Assisted by a proposed partial search algorithm,the polynomialform parity-check matri...
关键词：algebraic construction (n 2 n−1)codes convolutional low-density parity-check(LDPC)codes fast encoding maximum achievable syndrome former memory large girth 
Low-Complexity Detection and Decoding Scheme for LDPC-Coded MLC NAND Flash Memory被引量：1
《China Communications》2018年第6期58-67,共10页Xusheng Lin Guojun Han Shijie Ouyang Yanfu Li Yi Fang 
supported in part by the NSF of China (61471131, 61771149, 61501126);NSF of Guangdong Province 2016A030310337;the open research fund of National Mobile Communications Research Laboratory, Southeast University (No. 2018D02);the Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2017-ZJ022)
With the development of manufacture technology, the multi-level cell(MLC)technique dramatically increases the storage density of NAND flash memory. As the result,cell-to-cell interference(CCI) becomes more serious and...
关键词：Cell-to-cell interference（CCI） LDPC codes MLC NAND flash memory non-uniform detection（N-UD） modified soft reliability-based iterative majority-logic decoding（MSRBI-MLGD） algorithm 
Low-Density Parity-Check Codes for Noncoherent UWB Communication Systems被引量：2
《China Communications》2017年第7期152-162,共11页Zhonghua Liang Junshan Zang Xiaojun Yang Xiaodai Dong Huansheng Song 
supported in part by the National Natural Science Foundation of China under Grant 61271262, 61473047 and 61572083;Shaanxi Provincial Natural Science Foundation under Grant 2015JM6310;the Special Fund for Basic Scientific Research of Central Colleges, Chang’an University under Grant 310824152010 and 00092014G1241043
In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) co...
关键词：UWB NONCOHERENT channel coding LDPC codes 
Algebraic-Based Nonbinary LDPC Codes with Flexible Field Orders and Code Rates被引量：3
《China Communications》2017年第4期111-119,共9页Hengzhou Xu Dan Feng Cheng Sun Baoming Bai 
supported in part by National Basic Research Program of China under Grant No.2012CB316100;National Natural Science Foundation of China under Grants 61372074 and 91438101;Joint Funds of the National Natural Science Foundation of China under Grant No.U1504601;Science and Technology on Communication Networks Laboratory under Grant KX132600032
In this paper, we study the rank of matrices over GF(2~p),and propose two construction methods for algebraic-based nonbinary LDPC codes from an existing LDPC code, referred to as the original code. By multiplying all ...
关键词：nonbinary LDPC codes algebraic-based LDPC codes rank iterative algorithms 
Partial Parallel Encoding and Algorithmic Construction of Non-Binary Structured IRA Codes
《China Communications》2016年第8期103-116,共14页Wojciech Sulek Marcin Kucharczyk 
supported by the Polish Ministry of Science and Higher Education funding for statutory activities (decision no. 8686/E-367/S/2015 of 19 February 2015)
The non-binary(NB) Irregular Repeat Accumulate(IRA) codes, as a subclass of NB LDPC codes, potentially have an excellent error-correcting performance. They are also known to provide linear complexity of encoding, but ...
关键词：channel coding LDPC codes non-binary LDPC IRA codes LDPC encoding LDPC encoder design 
Lowering the Error Floor of ADMM Penalized Decoder for LDPC Codes被引量：1
《China Communications》2016年第8期127-135,共9页Jiao Xiaopeng Mu Jianjun 
supported in part by National Nature Science Foundation of China under Grant No.61471286,No.61271004;the Fundamental Research Funds for the Central Universities;the open research fund of Key Laboratory of Information Coding and Transmission,Southwest Jiaotong University(No.2010-03)
Decoding by alternating direction method of multipliers(ADMM) is a promising linear programming decoder for low-density parity-check(LDPC) codes. In this paper, we propose a two-step scheme to lower the error floor of...
关键词：LDPC codes linear programming decoding alternating direction method of multipliers(ADMM) error floor 
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