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

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Turkish Journal of Electrical Engineering and Computer Science
Volume:18 Issue:6
A second order approximation to reduce the complexity of LDPC decoders based on Gallager`s approach

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

Authors : Aykut KALAYCIOĞLU, Oktay ÜRETEN, H Gökhan İLK

Pages : 1053-1058

View : 16 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A piece-wise second order approximation to the f insert ignore into journalissuearticles values(x); = -log [tanh insert ignore into journalissuearticles values(x/2);] function is proposed to reduce the computational complexity of LDPC decoder`s utilizing Log-Likelihood Ratio Belief Propagation insert ignore into journalissuearticles values(LLR-BP); algorithm based on Gallager`s approach. Simulation results show that the proposed low complexity approximation doesn`t cause BER performance degradation.
Keywords : Turk J Elec Eng Comp Sci, 18, 2010, 1053 1058 Turk J Elec Eng Comp Sci, vol 18, iss 6

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