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

Authors

AYKUT KALAYCIOĞLU
OKTAY ÜRETEN
H. GÖKHAN İLK

DOI

10.3906/elk-0811-14

Abstract

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.

First Page

1053

Last Page

1058

Recommended Citation

KALAYCIOĞLU, AYKUT; ÜRETEN, OKTAY; and İLK, H. GÖKHAN (2010) "A second order approximation to reduce the complexity of LDPC decoders based on Gallager's approach," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 18: No. 6, Article 10. https://doi.org/10.3906/elk-0811-14
Available at: https://journals.tubitak.gov.tr/elektrik/vol18/iss6/10