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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Vydáno v:Applied Mechanics and Materials Ročník 672-674; číslo Renewable Energy and Power Technology II; s. 883 - 887
Hlavní autoři: Chang, Li Min, Dong, Qing Wei, Zhan, Ye
Médium: Journal Article
Jazyk:angličtina
Vydáno: Zurich Trans Tech Publications Ltd 01.10.2014
Témata:
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
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Popis
Shrnutí: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.
Bibliografie: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