Published January 1, 2010
| Version v1
Journal article
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A second order approximation to reduce the complexity of LDPC decoders based on Gallager's approach
- 1. Ankara Univ, Fac Engn, Dept Elect Engn, TR-06100 Ankara, Turkey
- 2. Commun Res Ctr Canada, Ottawa, ON, Canada
Description
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 Loy-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.
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