A Simplified Log-Likelihood Ratio Algorithm with Broken Line Analysis

Berrou C, Glavieux A, and Thitimajshima P. Near Shannonlimit error-correcting coding and decoding: Turbo-codes[C].IEEE International Conference on Communication, Geneva,1993: 1064-1070.[2]Benedetto S, Divsalar D, Montorsi G, and Pollara F.Bandwidth efficient parallel concatenated coding schemes[J].Electronics Letters.1995, 31(24):2067-2069[3]Robertson P and Woerz T. A novel bandwidth efficientcoding scheme employing turbo codes[C]. in Proc. IEEEInternational Conference on Communications, Dallas, Texas,USA, 1996: 962-967.[4]Goff S Le.[J].Glavieux A, and Berrou C. Turbo-codes and highspectral efficiency modulation[C]. in Proc. ICC94, NewOrleans.1994,:-[5]Fagervik K and Jeans T G. Low complexity bit by bit softoutput demodulator [J].IEEE Electronics Letters.1996,32(11):985-987[6]Raju M S.[J].Ramesh A, and Chockaingam A. BER analysis ofQAM with transmit diversity in Rayleigh fading channel[C].IEEE GLOBECOM03, San Francisco, USA.2003,:-[7]Hyun K and Yoon D. Bit metric generation for Gray codedQAM signals [J].IEEE Proceedings Communications.2005,152(6):1134-1138[8]Robertson P, Hoeher P, and Villebrum E. Optimal and suboptimalmaximum a posteriori algorithms suitable for turbodecoding [J].European Trans. on Telecomm.1997, 8(2):119-125