Results 21 to 30 of about 18,008 (158)

Algebra-Assisted Construction of Quasi-Cyclic LDPC Codes for 5G New Radio

open access: yesIEEE Access, 2018
Quasi-cyclic LDPC (QC-LDPC) codes have been accepted as the standard codes of 5G enhanced mobile broadband data channel. These standard codes are designed to support multiple lifting sizes and possess rate-compatible property, which can help adapt ...
Huaan Li   +4 more
doaj   +1 more source

Performance Analysis for Cooperative Communication System with QC-LDPC Codes Constructed with Integer Sequences

open access: yesDiscrete Dynamics in Nature and Society, 2015
This paper presents four different integer sequences to construct quasi-cyclic low-density parity-check (QC-LDPC) codes with mathematical theory. The paper introduces the procedure of the coding principle and coding.
Yan Zhang, Feng-fan Yang, Weijun Song
doaj   +1 more source

Augmented decoders for LDPC codes [PDF]

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
Abstract The performance of a belief propagation decoder for low-density parity-check codes is limited by the presence of trapping sets in the code’s graph. This leads to an error floor at higher signal-to-noise ratios. We propose the use of an augmented decoder which operates by iteratively decoding on a set of graphs which have a subset of repeated ...
Alex R. Rigby   +4 more
openaire   +3 more sources

On the Minimum Distance of Generalized Spatially Coupled LDPC Codes [PDF]

open access: yes, 2013
Families of generalized spatially-coupled low-density parity-check (GSC-LDPC) code ensembles can be formed by terminating protograph-based generalized LDPC convolutional (GLDPCC) codes.
Costello Jr, Daniel J.   +2 more
core   +2 more sources

Tree-Based Construction of LDPC Codes Having Good Pseudocodeword Weights [PDF]

open access: yes, 2005
We present a tree-based construction of LDPC codes that have minimum pseudocodeword weight equal to or almost equal to the minimum distance, and perform well with iterative decoding.
Kelley, Christine   +2 more
core   +4 more sources

New Construction of Low-Density Parity-Check Codes Based on Vector Space Over Finite Fields

open access: yesIEEE Access, 2020
Low-Density Parity-Check (LDPC) codes have low linear decoding complexity, which is a kind of good codes with excellent performance. Therefore, LDPC codes have great research value.
Xuemei Liu, Lihua Jia
doaj   +1 more source

Interleaved Product LDPC Codes [PDF]

open access: yesIEEE Transactions on Communications, 2012
11 pages, 5 figures, accepted for publication in IEEE Transactions on ...
Marco Baldi   +2 more
openaire   +2 more sources

Tradeoffs for reliable quantum information storage in surface codes and color codes [PDF]

open access: yes, 2013
The family of hyperbolic surface codes is one of the rare families of quantum LDPC codes with non-zero rate and unbounded minimum distance. First, we introduce a family of hyperbolic color codes.
Delfosse, Nicolas
core   +5 more sources

Implementation of Decoders for LDPC Block Codes and LDPC Convolutional Codes Based on GPUs [PDF]

open access: yesIEEE Transactions on Parallel and Distributed Systems, 2014
With the use of belief propagation (BP) decoding algorithm, low-density parity-check (LDPC) codes can achieve near-Shannon limit performance. In order to evaluate the error performance of LDPC codes, simulators running on CPUs are commonly used. However, the time taken to evaluate LDPC codes with very good error performance is excessive. In this paper,
Yue Zhao 0011, Francis Chung-Ming Lau
openaire   +3 more sources

On the Stopping Distance of SA-LDPC Codes by Transversal Designs

open access: yesIEEE Access, 2018
In this paper, we analyze the size of the smallest stopping set (called the stopping distance) for the parity-check matrix of a superposed array low-density parity-check (SA-LDPC) code for column weights 3 and 4 by using the transversal design (TD ...
Zahra Ferdosi   +2 more
doaj   +1 more source

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