Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes
A joint source channel coding (JSCC) scheme based on source and channel low density parity check (LDPC) codes, which is named as the D-LDPC system, has attracted a lot of attention recently. However, it suffers from a high error-floor. By introducing a linking matrix connecting variable nodes of sou...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8758624/ |
| _version_ | 1818347878938050560 |
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| author | Qiwang Chen Shaohua Hong Yifan Chen |
| author_facet | Qiwang Chen Shaohua Hong Yifan Chen |
| author_sort | Qiwang Chen |
| collection | DOAJ |
| description | A joint source channel coding (JSCC) scheme based on source and channel low density parity check (LDPC) codes, which is named as the D-LDPC system, has attracted a lot of attention recently. However, it suffers from a high error-floor. By introducing a linking matrix connecting variable nodes of source LDPC and check nodes of channel LDPC, the error-floor can be lowered effectively. However, the water-fall performance was lost with the increasing of the size of linking matrix. In this paper, a detailed analysis about the impact of this linking matrix on the water-fall region is conducted. Some design principles for the linking matrix are proposed, by which several linking matrices for different source statistics will be designed to improve the water-fall performance from the perspective of both the source and channel LDPC codes. The extrinsic information transfer (EXIT) analysis and numerical simulations will be compared to verify the superiority of the proposed linking matrices. |
| first_indexed | 2024-12-13T17:41:10Z |
| format | Article |
| id | doaj.art-e7ee867918a943388a3c97103a8f2fb3 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-13T17:41:10Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-e7ee867918a943388a3c97103a8f2fb32022-12-21T23:36:44ZengIEEEIEEE Access2169-35362019-01-017921769218310.1109/ACCESS.2019.29278648758624Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC CodesQiwang Chen0https://orcid.org/0000-0002-6562-8507Shaohua Hong1Yifan Chen2Faculty of Information Science and Engineering, Ningbo University, Ningbo, ChinaDepartment of Communication Engineering, Xiamen University, Xiamen, ChinaSchool of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, ChinaA joint source channel coding (JSCC) scheme based on source and channel low density parity check (LDPC) codes, which is named as the D-LDPC system, has attracted a lot of attention recently. However, it suffers from a high error-floor. By introducing a linking matrix connecting variable nodes of source LDPC and check nodes of channel LDPC, the error-floor can be lowered effectively. However, the water-fall performance was lost with the increasing of the size of linking matrix. In this paper, a detailed analysis about the impact of this linking matrix on the water-fall region is conducted. Some design principles for the linking matrix are proposed, by which several linking matrices for different source statistics will be designed to improve the water-fall performance from the perspective of both the source and channel LDPC codes. The extrinsic information transfer (EXIT) analysis and numerical simulations will be compared to verify the superiority of the proposed linking matrices.https://ieeexplore.ieee.org/document/8758624/JSCClinking matrixsource and channel LDPCwater-fall regionEXIT |
| spellingShingle | Qiwang Chen Shaohua Hong Yifan Chen Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes IEEE Access JSCC linking matrix source and channel LDPC water-fall region EXIT |
| title | Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes |
| title_full | Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes |
| title_fullStr | Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes |
| title_full_unstemmed | Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes |
| title_short | Design of Linking Matrix in JSCC Scheme Based on Double Protograph LDPC Codes |
| title_sort | design of linking matrix in jscc scheme based on double protograph ldpc codes |
| topic | JSCC linking matrix source and channel LDPC water-fall region EXIT |
| url | https://ieeexplore.ieee.org/document/8758624/ |
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