Study regarding the density evolution of messages and the characteristic functions associated of a LDPC code

International Conference on Applied Sciences 2016

Drghici, S.^1,2 ; Protean, O.^1 ; Rduca, E.^2 ; Haiegan, C.^2 ; Hllae, I.^2 ; Pdureanu, I.^3 ; Nedeloni, M.^2 ; Haiegan, L.^3

Politehnica University of Timisoara, Department of Automation and Applied Informatics, Vasile Parvan str., no. 2, Timisoara

300223, Romania^1

Eftimie Murgu University of Resita, Department of Electric Engineering and Informatics, Traian Vuia str., no. 1-4, Resita

320085, Romania^2

Eftimie Murgu University of Resita, Department of Mechanical and Materials Engineering, Traian Vuia str., no. 1-4, Resita

320085, Romania^3

关键词: Asymptotic boundary;    Characteristic functions;    Decodable codes;    Density evolution;    Graphic representation;    LDPC codes;    MathCAD;    Tanner graphs;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/163/1/012032/pdf
DOI  :  10.1088/1757-899X/163/1/012032

来源: IOP

【 摘 要 】

In this paper a method with which a set of characteristic functions are associated to a LDPC code is shown and also functions that represent the evolution density of messages that go along the edges of a Tanner graph. Graphic representations of the density evolution are shown respectively the study and simulation of likelihood threshold that render asymptotic boundaries between which there are decodable codes were made using MathCad V14 software.