Results 81 to 90 of about 595,487 (209)

Protograph EXIT Analysis over Block Fading Channels with Application to Relays [PDF]

, 2012
An accurate extrinsic information transfer (EXIT) analysis is developed for protograph low-density parity-check (LDPC) codes over the block fading channel (BFC). The analysis is thus exploited for analyzing the behavior of distributed protograph LDPC
Pulini, Paola, Marco Chiani, Paola Pulini, Liva, Gianluigi, Chiani, Marco, Gianluigi Liva   +5 more
core   +1 more source

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

IEEE 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, U. Shripathi Acharya, Pathipati Srihari, Linga Reddy Cenkeramaddi   +3 more
doaj   +1 more source

Optimized Puncturing of the Check Matrix for Rate-Compatible LDPC Codes

MATEC Web of Conferences, 2018
In the wireless communication system, it is necessary to change the transmitted code word or code rate in real time according to the channel environment, designing and implementing rate compatible codes is of great practical significance.
Zhang Liang, Meng Jiahui, Zhao Danfeng
doaj   +1 more source

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

Designs, 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, Guanghui Wang 0002, Zhiming Ma, Guiying Yan   +3 more
openaire   +2 more sources

Codificação LDPC para aplicações em códigos de barra 2D coloridos [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2011Nesta tese, aborda-se o armazenamento de informação em códigos de barra 2D coloridos, os quais devem ser ...
Legg, Andrei Piccinini
core  

Channel code division multiple access and its multilevel structured LDPC based instantiation

, 2008
In this paper, we introduce and outline the concept of Channel Code Division Multiple Access (CCDMA) using a design example based on the recently proposed Multilevel Structured (MLS) LDPC codes. We succeeded in making the memory requirements of the multi-
Sheng Chen, Chen, Sheng, Bonello, N., Nicholas Bonello, Bonello, Nicholas, Rong Zhang, Zhang, Rong, Hanzo, Lajos, Hanzo, L., Lajos Hanzo   +9 more
core   +2 more sources

Short Low-Rate Non-Binary Turbo Codes [PDF]

, 2012
A serial concatenation of an outer non-binary turbo code with different inner binary codes is introduced and analyzed. The turbo code is based on memory-1 time-variant recursive convolutional codes over high order fields.
Paolini, Enrico, G. Liva, Balazs Matuz, B. Matuz, Marco Chiani, Liva, Gianluigi, Chiani, Marco, Matuz, Balazs, Gianluigi Liva, Enrico Paolini   +9 more
core   +1 more source

Multilevel structured low-density parity-check codes for AWGN and Rayleigh channels

, 2010
We propose a novel class of protograph low-density parity-check (LDPC) codes having a combinatorial rather than a random structure, which are termed multilevel-structured (MLS) LDPC codes. It is demonstrated that they posses a strikingly simple structure
Chen, Sheng, Bonello, Nicholas, Hanzo, Lajos   +2 more
core   +1 more source

Double-Hamming based QC LDPC codes with large minimum distance [PDF]

, 2011
A new method using Hamming codes to construct base matrices of (J, K)-regular LDPC convolutional codes with large free distance is presented. By proper labeling the corresponding base matrices and tailbiting these parent convolutional codes to given ...
Kudryashov, Boris,, Bocharova, Irina, Rolf Johannesson, Kudryashov, Boris, Irina E. Bocharova, Florian Hug, Boris D. Kudryashov, Johannesson, Rolf,, Bocharova, Irina,, Johannesson, Rolf, Lund University., Hug, Florian, Hug, Florian,   +12 more
core   +1 more source

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, Yake Duan, Xiaoxiao Miao, Hai Zhu   +3 more
doaj   +1 more source