Results 11 to 20 of about 39,115 (248)

THE PERFORMANCE EVALUATION OF MULTI USER OFDM ORTHOGONAL CHAOTIC VECTOR SHIFT KEYING SUPPORTED BY LDPC

open access: yesJournal of Engineering and Sustainable Development, 2022
Recently, LDPC code have become very important research area in wireless communication due to its ability to increase the capacity in a wireless fading environment, with low implementation complexity. In this paper, LDPC are combined with Multi User OFDM
Ansam M. Abed, Fadhil S. Hasan
doaj   +1 more source

LDPC Error Floor Improvement [PDF]

open access: yesEngineering and Technology Journal, 2012
The error-correcting performance of low-density parity check (LDPC) codes, when decoded using practical iterative decoding algorithms, is known to be close to Shannon limits.
Aseel Hameed Majeed
doaj   +1 more source

Evaluation of Low Density Parity Check Codes Over Various Channel Types [PDF]

open access: yesEngineering and Technology Journal, 2011
Low density parity check (LDPC) codes are one of the best error correcting codes in today’s coding world and are known to approach the Shannon limit. As with all other channel coding schemes, LDPC codes add redundancy to the uncoded input data to make it
Mahmood Farhan Mosleh
doaj   +1 more source

Block Markov superposition transmission of LDPC codes

open access: yesJournal of Information and Intelligence, 2023
In this paper, based on the block Markov superposition transmission (BMST) technique, we present a new class of coupled low-density parity-check (LDPC) codes for the transport block (TB)-based transmission to improve the error-correcting performance. For
Qianfan Wang, Kongjing Guo, Xiao Ma
doaj   +1 more source

On the design of universal LDPC codes [PDF]

open access: yes2008 IEEE International Symposium on Information Theory, 2008
5 pages, 2 figures, To appear in Proc.
Ali Sanaei   +2 more
openaire   +2 more sources

Efficient Design of Read Voltages and LDPC Codes in NAND Flash Memory Using Density Evolution

open access: yesIEEE Access, 2023
Low-density parity-check (LDPC) codes play an important role in the reliability enhancement of commercial NAND flash memory. Unfortunately, due to the requirement of the reading speed of NAND flash memory, the LDPC decoder will not obtain precise soft ...
Chatuporn Duangthong   +2 more
doaj   +1 more source

A Time Sharing Hybrid Probabilistic Shaping Scheme for Nonbinary LDPC Codes

open access: yesIEEE Access, 2020
A time sharing (TS) hybrid probabilistic shaping (HPS) scheme for nonbinary (NB) LDPC codes is proposed. For the conventional probabilistic shaping (CPS) scheme, the demodulator uses bit-metric decoding (BMD) for binary LDPC codes and NB LDPC codes ...
Zhanji Wu, Weimin Kang
doaj   +1 more source

Analysis and Optimization of a General Linking Matrix for JSCC Scheme Based on Double LDPC Codes

open access: yesEntropy, 2023
A key component of the joint source-channel coding (JSCC) scheme based on double low-density parity-check (D-LDPC) codes is the introduction of a linking matrix between the source LDPC code and channel LDPC code, by which the decoding information ...
Qiwang Chen   +3 more
doaj   +1 more source

Randomly Punctured LDPC Codes [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2016
In this paper, we present a random puncturing analysis of low-density parity-check (LDPC) code ensembles. We derive a simple analytic expression for the iterative belief propagation (BP) decoding threshold of a randomly punctured LDPC code ensemble on the binary erasure channel (BEC) and show that, with respect to the BP threshold, the strength and ...
David G. M. Mitchell   +3 more
openaire   +3 more sources

Nonbinary Spatially-Coupled LDPC Codes on the Binary Erasure Channel [PDF]

open access: yes, 2012
We analyze the asymptotic performance of nonbinary spatially-coupled low-density parity-check (SC-LDPC) codes built on the general linear group, when the transmission takes place over the binary erasure channel.
Amat, Alexandre Graell i   +2 more
core   +2 more sources

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