Design and Analysis of Protograph-based LDPC Codes in Shallow Water Acoustic Channels

CHEN Zhenhua; XU Xiaomei; CHEN Yougan; SU Haitao

doi:10.11999/JEIT150415

Volume 38 Issue 1

Jan. 2016

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CHEN Zhenhua, XU Xiaomei, CHEN Yougan, SU Haitao. Design and Analysis of Protograph-based LDPC Codes in Shallow Water Acoustic Channels[J]. Journal of Electronics & Information Technology, 2016, 38(1): 153-159. doi: 10.11999/JEIT150415

Citation:

CHEN Zhenhua, XU Xiaomei, CHEN Yougan, SU Haitao. Design and Analysis of Protograph-based LDPC Codes in Shallow Water Acoustic Channels[J]. Journal of Electronics & Information Technology, 2016, 38(1): 153-159. doi: 10.11999/JEIT150415

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Design and Analysis of Protograph-based LDPC Codes in Shallow Water Acoustic Channels

doi: 10.11999/JEIT150415

1.
2.
(Key Laboratory of Underwater Acoustic Communication and Marine Information Technology, Xiamen University, Xiamen 361005, China)

Funds:

The National Natural Science Foundation of China (41176032, 41376040, 41476026), The Specialized Research Fund for the Doctoral Program of Higher Education of China (20130121120033), The Fundamental Research Funds for the Central Universities (20720140506)

Received Date: 2015-04-10
Rev Recd Date: 2015-10-15
Publish Date: 2016-01-19

Abstract

Abstract

ProtoGraph-based Low Density Parity Check (PG-LDPC) codes have many advantages over the conventional LDPC codes, such as simple structure, low iterative decoding threshold, easy extension and linear encoding/decoding complexity. After investigating the characteristics of PG-LDPC codes over the Shallow Water Acoustic (SWA) channels, which have the features of strong multipath interference, long delay spreading and limited bandwidth, a new design scheme to search for good codes is proposed. Furthermore, protograph- degree-distribution-based EXtrinsic Information Transfer (EXIT) chart algorithm is used to predict and analyze the error performances of protograph-based LDPC codes. The simulation and experiment results show that the proposed code outperforms the (3, 6) randomly regular LDPC code in both low and high SNR region, over the SWA channels.

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References(27)

References

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