Performance analysis and optimisation for edge connection of JSCC system based on double protograph LDPC codes

For a joint source–channel coding system based on double protograph low-density parity-check codes, the exchange of extrinsic information through edge connection between the source code and channel code is essential for good performance. In this study, the relationship between the performance and ed...

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Vydáno v:IET communications Ročník 12; číslo 2; s. 214 - 219
Hlavní autoři: Hong, Shaohua, Chen, Qiwang, Wang, Lin
Médium: Journal Article
Jazyk:angličtina
Vydáno: The Institution of Engineering and Technology 30.01.2018
Témata:
bit error rate performance
combined source‐channel coding
double protograph LDPC codes
double protograph low‐density parity‐check codes
edge connection
joint protograph extrinsic information transfer
joint source‐channel coding system
JSCC system
optimisation
optimisation scheme
parity check codes
Research Article
tanner graph
JSCC system
double protograph LDPC codes
optimisation
joint source-channel coding system
optimisation scheme
bit error rate performance
parity check codes
double protograph low-density parity-check codes
combined source-channel coding
edge connection
tanner graph
joint protograph extrinsic information transfer
ISSN:1751-8628, 1751-8636
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Shrnutí:For a joint source–channel coding system based on double protograph low-density parity-check codes, the exchange of extrinsic information through edge connection between the source code and channel code is essential for good performance. In this study, the relationship between the performance and edge connection in the tanner graph is analysed and it has never been seen in the literature to the authors' knowledge. Both the joint protograph extrinsic information transfer and simulation results indicate that the edge connection should be optimised in practical applications since it plays an important role in the bit error rate performance and an optimisation scheme for the edge connection is put forward to enhance performance.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2017.0787