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Soft decoding in optical systems

delete2003-08-01
delete33
PRE
AI
G
Gabriella Bosco
G
G. Montorsi
S
Sergio Benedetto *
DOI:10.1109/TCOMM.2003.815055delete
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摘要

摘要

En 中文
We consider the application of concatenated codes with interleaver and iterative decoding to optical communication systems. We show how to obtain the optimum log-likelihood ratio to he provided to the soft decoder in the optical channel environment, and compare the performance of a decoder using it with the one employing a Gaussian approximation of the optical channel. Simulation results refer to practical turbo-product codes, and encompass the effect of quantization on the log-likelihood ratio. The results show that the Gaussian assumption in computing the log-likelihood ratio for the optical channel leads to significant losses.
Keyword:
modeling
optical communication
product codes
soft-decision decoding
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期刊

IEEE Transactions on Communications 封面图
IEEE Transactions on Communications
IF:
8.3
论文数:
1.2W
被引数:
3.6W

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