Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission

In this paper, a joint early stopping criterion based on cross entropy (CE), named joint CE criterion, is presented for double-protograph low-density parity-check (DP-LDPC) codes-based joint source-channel coding (JSCC) systems in images transmission to reduce the decoding complexity and decrease th...

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Autores principales:	Zhiping Xu, Lin Wang, Shaohua Hong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	joint source-channel system protograph LDPC decoding stopping criterion cross entropy image transmission Science Q Astrophysics QB460-466 Physics QC1-999
Acceso en línea:	https://doaj.org/article/1841365630664db393d3486d05ea7d52
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spelling	oai:doaj.org-article:1841365630664db393d3486d05ea7d522021-11-25T17:29:15ZJoint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission10.3390/e231113921099-4300https://doaj.org/article/1841365630664db393d3486d05ea7d522021-10-01T00:00:00Zhttps://www.mdpi.com/1099-4300/23/11/1392https://doaj.org/toc/1099-4300In this paper, a joint early stopping criterion based on cross entropy (CE), named joint CE criterion, is presented for double-protograph low-density parity-check (DP-LDPC) codes-based joint source-channel coding (JSCC) systems in images transmission to reduce the decoding complexity and decrease the decoding delay. The proposed early stopping criterion adopts the CE from the output likelihood ratios (LLRs) of the joint decoder. Moreover, a special phenomenon named asymmetry oscillation-like convergence (AOLC) in the changing process of CE is uncovered in the source decoder and channel decoder of this system meanwhile, and the proposed joint CE criterion can reduce the impact from the AOLC phenomenon. Comparing to the counterparts, the results show that the joint CE criterion can perform well in the decoding complexity and decoding latency in the low–moderate signal-to-noise ratio (SNR) region and achieve performance improvement in the high SNR region with appropriate parameters, which also demonstrates that this system with joint CE is a low-latency and low-power system.Zhiping XuLin WangShaohua HongMDPI AGarticlejoint source-channel systemprotograph LDPCdecodingstopping criterioncross entropyimage transmissionScienceQAstrophysicsQB460-466PhysicsQC1-999ENEntropy, Vol 23, Iss 1392, p 1392 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	joint source-channel system protograph LDPC decoding stopping criterion cross entropy image transmission Science Q Astrophysics QB460-466 Physics QC1-999
spellingShingle	joint source-channel system protograph LDPC decoding stopping criterion cross entropy image transmission Science Q Astrophysics QB460-466 Physics QC1-999 Zhiping Xu Lin Wang Shaohua Hong Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
description	In this paper, a joint early stopping criterion based on cross entropy (CE), named joint CE criterion, is presented for double-protograph low-density parity-check (DP-LDPC) codes-based joint source-channel coding (JSCC) systems in images transmission to reduce the decoding complexity and decrease the decoding delay. The proposed early stopping criterion adopts the CE from the output likelihood ratios (LLRs) of the joint decoder. Moreover, a special phenomenon named asymmetry oscillation-like convergence (AOLC) in the changing process of CE is uncovered in the source decoder and channel decoder of this system meanwhile, and the proposed joint CE criterion can reduce the impact from the AOLC phenomenon. Comparing to the counterparts, the results show that the joint CE criterion can perform well in the decoding complexity and decoding latency in the low–moderate signal-to-noise ratio (SNR) region and achieve performance improvement in the high SNR region with appropriate parameters, which also demonstrates that this system with joint CE is a low-latency and low-power system.
format	article
author	Zhiping Xu Lin Wang Shaohua Hong
author_facet	Zhiping Xu Lin Wang Shaohua Hong
author_sort	Zhiping Xu
title	Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
title_short	Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
title_full	Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
title_fullStr	Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
title_full_unstemmed	Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission
title_sort	joint early stopping criterions for protograph ldpc codes-based jscc system in images transmission
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1841365630664db393d3486d05ea7d52
work_keys_str_mv	AT zhipingxu jointearlystoppingcriterionsforprotographldpccodesbasedjsccsysteminimagestransmission AT linwang jointearlystoppingcriterionsforprotographldpccodesbasedjsccsysteminimagestransmission AT shaohuahong jointearlystoppingcriterionsforprotographldpccodesbasedjsccsysteminimagestransmission
_version_	1718412271042953216

Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission

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