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

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 adopti...

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Bibliographic Details
Published in:Applied Mechanics and Materials Vol. 672-674; no. Renewable Energy and Power Technology II; pp. 883 - 887
Main Authors: Chang, Li Min, Dong, Qing Wei, Zhan, Ye
Format: Journal Article
Language:English
Published: Zurich Trans Tech Publications Ltd 01.10.2014
Subjects:
Algorithms
Circuit design
Coders
Decoders
Encoders
Encoding
Error correcting codes
Propagation
AR4JA Protograph
LDPC
Encoding
Decoding
Laser Communication
ISBN:9783038352860, 3038352861
ISSN:1660-9336, 1662-7482, 1662-7482
Online Access:Get full text
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Summary: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.
Bibliography:Selected, peer reviewed papers from the 2014 2nd International Conference on Renewable Energy and Environmental Technology (REET 2014), August 19-20, 2014, Dalian, China
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ISBN:9783038352860
3038352861
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.672-674.883