Concatenated Spatially Coupled LDPC Codes With Sliding Window Decoding for Joint Source-Channel Coding

In this paper, a method for joint source-channel coding (JSCC) based on concatenated spatially coupled low-density parity-check (SC-LDPC) codes is investigated. A construction consisting of two SC-LDPC codes is proposed: one for source coding and the other for channel coding, with a joint belief pro...

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Vydané v:IEEE transactions on communications Ročník 70; číslo 2; s. 851 - 864
Hlavní autori: Golmohammadi, Ahmad, Mitchell, David G. M.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.02.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Asymptotic properties
Binary system
Block codes
Codes
Coding
Complexity
Convolutional codes
Decoding
Error correcting codes
Generators
Information transfer
Joining
joint source-channel coding
Low density parity check codes
Low-density parity-check (LDPC) codes
Parity check codes
Source coding
Sparse matrices
spatially coupled codes
window decoding
ISSN:0090-6778, 1558-0857
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Abstract In this paper, a method for joint source-channel coding (JSCC) based on concatenated spatially coupled low-density parity-check (SC-LDPC) codes is investigated. A construction consisting of two SC-LDPC codes is proposed: one for source coding and the other for channel coding, with a joint belief propagation-based decoder. Also, a novel windowed decoding (WD) scheme is presented with significantly reduced latency and complexity requirements. The asymptotic behavior for various graph node degrees is analyzed using a protograph-based Extrinsic Information Transfer (EXIT) chart analysis for both LDPC block codes with block decoding and for SC-LDPC codes with the WD scheme, showing robust performance for concatenated SC-LDPC codes. Simulation results show a notable performance improvement compared to existing state-of-the-art JSCC schemes based on LDPC codes with comparable latency and complexity constraints.
AbstractList In this paper, a method for joint source-channel coding (JSCC) based on concatenated spatially coupled low-density parity-check (SC-LDPC) codes is investigated. A construction consisting of two SC-LDPC codes is proposed: one for source coding and the other for channel coding, with a joint belief propagation-based decoder. Also, a novel windowed decoding (WD) scheme is presented with significantly reduced latency and complexity requirements. The asymptotic behavior for various graph node degrees is analyzed using a protograph-based Extrinsic Information Transfer (EXIT) chart analysis for both LDPC block codes with block decoding and for SC-LDPC codes with the WD scheme, showing robust performance for concatenated SC-LDPC codes. Simulation results show a notable performance improvement compared to existing state-of-the-art JSCC schemes based on LDPC codes with comparable latency and complexity constraints.
Author Golmohammadi, Ahmad
Mitchell, David G. M.
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SubjectTerms Asymptotic properties
Binary system
Block codes
Codes
Coding
Complexity
Convolutional codes
Decoding
Error correcting codes
Generators
Information transfer
Joining
joint source-channel coding
Low density parity check codes
Low-density parity-check (LDPC) codes
Parity check codes
Source coding
Sparse matrices
spatially coupled codes
window decoding
Title Concatenated Spatially Coupled LDPC Codes With Sliding Window Decoding for Joint Source-Channel Coding
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