Results 61 to 70 of about 13,741 (205)

The decoding schemes of LDPC-codes. The efficiency ratings, advantages and further developments of LDPC-codes

open access: yesБезопасность информационных технологий, 2010
This article concerns the problems of information decoding, using LDPC-code and describes different decoding schemes. It is also described that LDPC codes are selected as the DVB-S2 standard over 7 other turbo code based candidates because of its more ...
A. G. Soltanov
doaj  

The Design of Vertical RS-CRC and LDPC Code for Ship-Based Satellite Communications On-the-Move

open access: yesIEEE Access, 2019
This paper investigates the decoding performance of channel-coded ship-based satellite communications on-the-move (SSCOTM) between ships and satellites.
Bingrui Wang   +3 more
doaj   +1 more source

Performance Analysis and Design of Two Edge Type LDPC Codes for the BEC Wiretap Channel

open access: yes, 2011
We consider transmission over a wiretap channel where both the main channel and the wiretapper's channel are Binary Erasure Channels (BEC). We propose a code construction method using two edge type LDPC codes based on the coset encoding scheme.
Andersson, Mattias   +4 more
core   +1 more source

A low‐complexity block EP‐based detector for iterative detection and decoding in unsourced random access

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
Here, a multi‐user signal iterative detection and decoding scheme named LBEP based on block expectation propagation (BEP) is proposed for LDPC‐coded two‐phase unsourced random access (URA) scheme. In the iteratively process, the approximation of matrix inversion is used to facilitate expectation propagation (EP). The numerical results show that, in the
Jinyang Chen   +5 more
wiley   +1 more source

Novel construction of quasi-cyclic low-density parity-check codes with variable code rates for cloud data storage systems

open access: yesETRI Journal, 2023
This paper proposed a novel method for constructing quasi-cyclic low-density parity-check (QC-LDPC) codes of medium to high code rates that can be applied in cloud data storage systems, requiring better error correction capabilities.
Vairaperumal Bhuvaneshwari   +1 more
doaj   +1 more source

Spatially Coupled LDPC Codes Constructed from Protographs

open access: yes, 2014
In this paper, we construct protograph-based spatially coupled low-density parity-check (SC-LDPC) codes by coupling together a series of L disjoint, or uncoupled, LDPC code Tanner graphs into a single coupled chain.
Costello Jr, Daniel J.   +2 more
core   +1 more source

5G‐coded fluid antenna multiple access over block fading channels

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
This letter investigates the use of 5G New Radio (NR) Modulation Coding Scheme (MCS) for FAMA systems to improve its connectivity over block fading channels. In particular, we propose an iterative decoding receiver with iterative interference covariance estimation, designed explicitly for slow fading channels.
Hanjiang Hong   +4 more
wiley   +1 more source

LDPC Codes Which Can Correct Three Errors Under Iterative Decoding

open access: yes, 2008
In this paper, we provide necessary and sufficient conditions for a column-weight-three LDPC code to correct three errors when decoded using Gallager A algorithm.
Chilappagari, Shashi Kiran   +2 more
core   +2 more sources

Interleaved Product LDPC Codes [PDF]

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

Adaptive Coding‐Based Quantum Communication System for Image Transmission

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
Adaptive coding‐based quantum communication demonstrates the superior robustness and higher image quality compared to the adaptive coding‐based classical communication in varying channel noise conditions and bandwidth‐restricted applications. ABSTRACT This work presents a quantum communication system enhanced with adaptive coding, aimed at improving ...
Udara Jayasinghe   +4 more
wiley   +1 more source

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