浅海水声信道中原模图LDPC码的设计及性能分析

doi:10.11999/JEIT150415

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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.

Key words： Shallow Water Acoustic (SWA) communication Error-correction coding Protograph-based LDPC codes EXtrinsic Information Transfer (EXIT) charts algorithm

Received: 10 April 2015 Published: 18 November 2015

PACS:

TN929.3

Fund:

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)

Corresponding Authors: XU Xiaomei E-mail: xmxu@xmu.edu.cn

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	CHEN Zhenhua
	XU Xiaomei
	CHEN Yougan
	SU Haitao

Cite this article:

CHEN Zhenhua,XU Xiaomei,CHEN Yougan等. Design and Analysis of Protograph-based LDPC Codes in Shallow Water Acoustic Channels[J]. JEIT, 2016, 38(1): 153-159.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150415 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I1/153

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