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

KALAYCIOĞLU, AYKUT; Üreten, Oktay; İLK, HAKKI

doi:10.3906/elk-0811-14

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

Atıf İçin Kopyala

KALAYCIOĞLU A., Üreten O., İLK H. G.

Turkish Journal of Electrical Engineering and Computer Sciences, cilt.18, sa.6, ss.1053-1058, 2010 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 18 Sayı: 6
Basım Tarihi: 2010
Doi Numarası: 10.3906/elk-0811-14
Dergi Adı: Turkish Journal of Electrical Engineering and Computer Sciences
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
Sayfa Sayıları: ss.1053-1058
Ankara Üniversitesi Adresli: Evet

Özet

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. © TÜBİTAK.