Results 81 to 90 of about 11,056,883 (213)

Parity-Check Network Coding for Multiple Access Relay Channel in Wireless Sensor Cooperative Communications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
A recently developed theory suggests that network coding is a generalization of source coding and channel coding and thus yields a significant performance improvement in terms of throughput and spatial diversity.
Bing Du, Jun Zhang
doaj   +1 more source

Nonbinary LDPC-Coded Modulation System in High-Speed Mobile Communications

open access: yesIEEE Access, 2018
As a class of capacity-approaching codes, nonbinary low-density parity-check (LDPC) codes have attracted much attention because of noticeable performance.
Dan Feng   +5 more
doaj   +1 more source

Investigation of punctured LDPC codes and time-diversity on free-space optical links [PDF]

open access: yes, 2011
In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is
Ghassemlooy, Zabih   +4 more
core  

High performance full diversity LDPC codes construction and performance analysis for H-ARQ channels

open access: yesTongxin xuebao, 2012
In order to improve the performance of communication system with hybrid automatic repeat request(H-ARQ),a kind of full diversity low density parity check(LDPC)codes on H-ARQ block-fading channels was proposed.First,the outage probability and inherent ...
Rui GUO, Fang-ning HU, Ji-lin LIU
doaj   +2 more sources

Concatenated Turbo/LDPC codes for deep space communications: performance and implementation [PDF]

open access: yes, 2013
Deep space communications require error correction codes able to reach extremely low bit-error-rates, possibly with a steep waterfall region and without error floor. Several schemes have been proposed in the literature to achieve these goals.
Condo, Carlo
core  

QC-LDPC Codes Construction by Concatenating of Circulant Matrices as Block-Columns

open access: yesInternational Journal of Information and Communication Technology Research, 2016
In this paper a new low complexity method for constructing binary quasi-cyclic low-density parity-check (QC-LDPC) codes is introduced. In the proposed method, each block-column of the parity check matrix H is made by a circulant matrix in a way that the ...
Mohammad Hesam Tadayon   +1 more
doaj  

Open-set blind recognition of non-binary LDPC codes

open access: yesDigital Communications and Networks
Blind encoder recognition methods have drawn much research interest in recent years, as they can play an important role in non-cooperative scenarios. This paper proposes an open-set blind recognition method for non-binary Low-Density Parity-Check (LDPC ...
Ming Jiang   +3 more
doaj   +1 more source

Proposta de códigos LDPC para canais de resposta parcial [PDF]

open access: yes, 2007
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Neste trabalho é apresentada uma proposta de códigos de verificação de paridade de baixa densidade (LDPC, Low Density ...
Legg, Andrei Piccinini
core  

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