Results 51 to 60 of about 38,534 (221)

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

The Effect of Saturation on Belief Propagation Decoding of LDPC Codes

, 2014
We consider the effect of LLR saturation on belief propagation decoding of low-density parity-check codes. Saturation occurs universally in practice and is known to have a significant effect on error floor performance.
Iyengar, Aravind, Kudekar, Shrinivas, Richardson, Tom   +2 more
core   +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

Stopping Set Distributions of Some Linear Codes [PDF]

, 2010
Stopping sets and stopping set distribution of an low-density parity-check code are used to determine the performance of this code under iterative decoding over a binary erasure channel (BEC).
Fu, Fang-Wei, Jiang, Yong, Xia, Shu-Tao
core  

Sharp Bounds for Optimal Decoding of Low Density Parity Check Codes

, 2008
Consider communication over a binary-input memoryless output-symmetric channel with low density parity check (LDPC) codes and maximum a posteriori (MAP) decoding.
Kudekar, Shrinivas, Macris, Nicolas
core   +2 more sources

Generalized Low-Density Parity-Check Coding Aided Multilevel Codes

, 2006
Classic Low-Density Parity-Check (LDPC) codes have recently been used as component codes in Multilevel Coding (MLC) due to their impressive BER performance as well as owing to their flexible coding rates.
Hanzo, L., Kuo, F.C., Tee, R.Y.S.
core  

Extended Non-Binary Low-Density Parity-Check Codes over Erasure Channels

, 2011
Based on the extended binary image of non-binary LDPC codes, we propose a method for generating extra redundant bits, such as to decreases the coding rate of a mother code.
Declercq, David, Savin, Valentin, Sy, Lam Pham   +2 more
core   +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