Title :
Turbo Decoder Early Detection Based on Density Evolution
Author :
Ling, Jun ; Xie, Lei ; Chen, Huifang
Author_Institution :
Dept. of Inf. Sci. & Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
In maximum a posteriori probability (MAP) decoding of turbo code, the density evolution of decoder´s internal variable alpha is shown to evolve to stability as the number of iteration increases. In this paper a new block-oriented early detection stopping criterion is derived from this property. Simulation results show that the bit error rate performance would drop almost negligibly if the criterion parameters are carefully chosen
Keywords :
block codes; error statistics; maximum likelihood decoding; maximum likelihood detection; turbo codes; MAP decoding; bit error rate performance; block-oriented early detection stopping criterion; density evolution; maximum aposteriori probability; turbo code; AWGN; Bit error rate; Cyclic redundancy check; Entropy; Iterative decoding; Monitoring; Parity check codes; Partial response channels; Stability; Turbo codes;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284756
