Design and Implementation of LDPC Encoder / Decoder in the Atmospheric Laser Communication

Li Min Chang; Qing Wei Dong; Ye Zhan

doi:10.4028/www.scientific.net/AMM.672-674.883

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 672-674Design and Implementation of LDPC Encoder /...

Design and Implementation of LDPC Encoder / Decoder in the Atmospheric Laser Communication

Abstract:

The paper briefly introduces the structure principle and excellent characteristics of protograph LDPC codes and designs the serial encoding circuit based on FPGA. On the basis of the further study of Belief Propagation (BP) algorithm, λ-min algorithm and A - min algorithm, decoder is designed adopting the complexity and performance eclectic mixed decoding algorithm. Meanwhile, it is verified by the simulation. The result shows that coding gain can be up to about 6 to 8 db, if it meets the requirements of 10^-5 bit error rate.

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Periodical:

Applied Mechanics and Materials (Volumes 672-674)

Pages:

883-887

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.672-674.883

Citation:

Cite this paper

Online since:

October 2014

Authors:

Li Min Chang*, Qing Wei Dong, Ye Zhan

Keywords:

AR4JA Protograph, Decoding, Encoding, Laser Communication, LDPC

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* - Corresponding Author

References

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