Results 21 to 30 of about 1,613 (180)

Effective identification of dominant fully absorbing sets for Raptor-like LDPC codes

ETRI Journal, 2023
The error-rate floor of low-density parity-check (LDPC) codes is attributed to the trapping sets of their Tanner graphs. Among them, fully absorbing sets dominantly affect the error-rate performance, especially for short blocklengths.
Woncheol Cho, Chanho Yoon, Kapseok Chang, Young-Jo Ko   +3 more
doaj   +1 more source

Full-Length Row-Multiplier QC-LDPC Codes With Girth Eight and Short Circulant Sizes

IEEE Access, 2023
As a special case of a quasi-cyclic (QC) low-density parity-check (LDPC) code, a full-length row-multiplier (FLRM) QC-LDPC code is described by a compact exponent matrix based on two sequences of integers.
Juhua Wang, Jianhua Zhang, Quan Zhou, Lintao Zhang   +3 more
doaj   +1 more source

Beyond 100 Gbit/s Pipeline Decoders for Spatially Coupled LDPC Codes

EURASIP Journal on Wireless Communications and Networking, 2022
Low-density parity-check (LDPC) codes are a well-established class of forward error correction codes that provide excellent error correction performance for large code block sizes.
Matthias Herrmann, Norbert Wehn
doaj   +1 more source

Distance verification for LDPC codes [PDF]

2016 IEEE International Symposium on Information Theory (ISIT), 2016
5 pages, 1 figure, to appear in Proceedings of ISIT 2016 - IEEE International Symposium on Information Theory ...
Ilya Dumer, Alexey A. Kovalev, Leonid P. Pryadko   +2 more
openaire   +4 more sources

An optimized initialization for LDPC decoding over GF(q) in impulsive noise environments.

PLoS ONE, 2021
Modern navigation satellite communication has the characteristic of high transmitting rate. To avoid bit errors in data transmission, low density parity check (LDPC) codes are widely recognized as efficient ways for navigation communication ...
Haoqiang Liu, Hongbo Zhao, Xiaowen Chen, Wenquan Feng   +3 more
doaj   +1 more source

LDPC codes [PDF]

, 2021
Στα ψηφιακά συστήματα, η πληροφορία κωδικοποιείται σε ακολουθίες από 0και 1, που αντιστοιχούν στις δύο δυνατές καταστάσεις των τρανζίστορ, on - off, τα οποία λειτουργούν ως διακόπτες. Το πλεονέκτημα αυτό έχει επιφέρει σημαντικέςαλλαγές στον τρόπο επεξεργασίας της πληροφορίας.
openaire   +1 more source

High-Speed Reconciliation for CVQKD Based on Spatially Coupled LDPC Codes

IEEE Photonics Journal, 2018
The speed of continuous variable quantum key distribution is limited by the reconciliation efficiency and the reconciliation frame error rate (FER) in the reconciliation phase.
Xue-Qin Jiang, Siyuan Yang, Peng Huang, Guihua Zeng   +3 more
doaj   +1 more source

A Nonbinary LDPC-Coded Probabilistic Shaping Scheme for a Rayleigh Fading Channel

Entropy, 2022
In this paper, a novel, nonbinary (NB) LDPC-coded probabilistic shaping (PS) scheme for a Rayleigh fading channel is proposed. For the NB LDPC-coded PS scheme in Rayleigh fading channel, the rotation angle of 16 quadrature amplitude modulation (QAM ...
Weimin Kang
doaj   +1 more source

4-CYCLE FREE APM LDPC CODES WITH AN EXPLICIT CONSTRUCTION [PDF]

Journal of Algebraic Systems, 2021
Recently, a class of low-density parity-check codes based on affine permutation matrices, called APM-LDPC codes, have been considered which have some advantages than quasi-cyclic (QC) LDPC codes in terms of minimum-distance, cycle distribution, and error-
Z. Gholami, M. Gholami
doaj   +1 more source

Investigating the Performance of Coded GSIM DCSK Communication Systems over Multipath Rayleigh Fading Channel

Journal of Communications Software and Systems
Index modulation−based differential chaos shift keying (IM−DCSK) is a promising technique in wireless communication systems. Among all schemes, a Grouping Subcarrier Index Modulation DCSK (GSIM−DCSK) supports suit−coded modulation to improve bit error ...
Ali Jaber Al-Askery, Fadhil Sahib Hasan, Ahmed A. Thabit   +2 more
doaj   +1 more source