A second order approximation to reduce the complexity of LDPC decoders based on Gallager's approach

A piece-wise second order approximation to the f (x) = -log [tanh (x/2)] function is proposed to reduce the computational complexity of LDPC decoder's utilizing Log-Likelihood Ratio Belief Propagation (LLR-BP) algorithm based on Gallager's approach. Simulation results show that the propose...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Elektrik : Turkish journal of electrical engineering & computer sciences 2010-01, Vol.18 (6), p.1053-1058
Hauptverfasser:	KALAYCIOĞLU, Aykut, ÜRETEN, Oktay, İLK, H. Gökhan
Format:	Artikel
Sprache:	eng
Schlagworte:	approximation method Communication Engineering Complexity decoder İkinci mertebe analizi İletişim Mühendisliği Karmaşıklık Kod çözücü LDPC Matematik Mathematics Second order analysis Turk. J. Elec. Eng. & Comp. Sci., 18, , 1053-1058. Full text: pdf Other articles published in the same issue: Turk. J. Elec. Eng. & Comp. Sci.,vol.18,iss.6 Yaklaşım yöntemi
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A piece-wise second order approximation to the f (x) = -log [tanh (x/2)] function is proposed to reduce the computational complexity of LDPC decoder's utilizing Log-Likelihood Ratio Belief Propagation (LLR-BP) algorithm based on Gallager's approach. Simulation results show that the proposed low complexity approximation doesn't cause BER performance degradation.
ISSN:	1300-0632 1303-6203 1303-6203
DOI:	10.3906/elk-0811-14