Results 31 to 40 of about 1,780 (149)

Statistical mechanics of low-density parity-check codes [PDF]

Journal of Physics A: Mathematical and General, 2004
This paper reviews some recent theoretical results on the classical mechanics of error-correcting codes, with focus mainly on low-density parity-check codes (LDPC) in correcting codes, and on Gallager and McKay-Neal codes. After a general description of the considered communication channel, the authors review various LDPC code constructions and then ...
Y. Kabashima, D. Saad
openaire   +2 more sources

Planar Quantum Low-Density Parity-Check Codes with Open Boundaries

PRX Quantum
Although high-threshold and low-overhead quantum low-density parity-check (qLDPC) codes, such as bivariate bicycle (BB) codes, can reduce the physical-qubit cost by an order of magnitude compared to the Kitaev toric code, their torus layout remains ...
Zijian Liang (梁子健), Jens Niklas Eberhardt, Yu-An Chen (陳昱安)   +2 more
doaj   +1 more source

A construction of the high-rate regular quasi-cyclic LDPC codes

EURASIP Journal on Wireless Communications and Networking, 2019
In this paper, a scheme to construct the high-rate regular quasi-cyclic low-density parity-check (QC-LDPC) codes is developed based on the finite geometry low-density parity-check (LDPC) codes.
Qi Meng, Jia Xiang Zhao, Wei Xu, Liang Li   +3 more
doaj   +1 more source

Ldpc Code Construction using Randomly Permutated Copies of Parity Check Matrix [PDF]

مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2018
A construction technique is proposed for low-density parity check (LDPC) codes. It uses a base parity check matrix designed from a ran-dom or constructed construction method as Gallager or Quasi-Cyclic LDPC (QC-LDPC) codes in sequence to get codes with ...
Amr lulu, Ammar Abu-Hudrouss
doaj   +1 more source

Reordered static layered schedule for 5G low‐density parity‐check codes

Electronics Letters
The error performance of the 5G low‐density parity‐check codes is significantly impacted by the update order of layers. At present, the row degree (RD) and the number of punctured bits (PBs) are widely used to decide the update order of layers. Here, the
Yangcan Zhou, Zhongfeng Wang
doaj   +1 more source

On Girth Conditioning for Low-Density Parity-Check Codes [PDF]

IEEE Transactions on Communications, 2011
Low-density parity-check (LDPC) codes are gaining interest for high data rate applications in both terrestrial and spatial communications. They can be designed and studied through a bipartite graph whose characteristics affect the performance. This paper proposes a low-complexity method to improve the performance of LDPC codes by selectively removing ...
Samuele Bandi, TRALLI, Velio, CONTI, Andrea, NONATO, Maddalena   +3 more
openaire   +2 more sources

CONSTRUCTION OF REGULAR LDPC LIKE CODES BASED ON FULL RANK CODES AND THEIR ITERATIVE DECODING USING A PARITY CHECK TREE [PDF]

ICTACT Journal on Communication Technology, 2011
Low density parity check (LDPC) codes are capacity-approaching codes, which means that practical constructions exist that allow the noise threshold to be set very close to the theoretical Shannon limit for a memory less channel.
H. Prashantha Kumar, U. Sripati, K. Rajesh Shetty   +2 more
doaj  

Low-Density Parity-Check Codes as Stable Phases of Quantum Matter

PRX Quantum
Phases of matter with robust ground-state degeneracy, such as the quantum toric code, are known to be capable of robust quantum information storage. Here, we address the converse question: given a quantum error-correcting code, when does it define a ...
Chao Yin, Andrew Lucas
doaj   +1 more source

Protograph Based Low-Density Parity-Check Codes Design With Mixed Integer Linear Programming

IEEE Access, 2019
An approach to design protograph-based low-density parity-check (LDPC) codes utilizing mixed integer linear programming (MILP) optimization is presented in this paper.
Wojciech Sulek
doaj   +1 more source

Encoding of QC-LDPC Codes of Rank Deficient Parity Matrix

Journal of Engineering, 2016
the encoding of long low density parity check (LDPC) codes presents a challenge compared to its decoding. The Quasi Cyclic (QC) LDPC codes offer the advantage for reducing the complexity for both encoding and decoding due to its QC structure.
Mohammed Kasim Mohammed Al-Haddad
doaj   +2 more sources