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Rate-adaptive codes for distributed source coding

delete2006-11-01
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PRE
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D
David Varodayan *
A
Anne Aaron
B
Bernd Girod
DOI:10.1016/j.sigpro.2006.03.012delete
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Abstract

Abstract

En 中文
Source coding with correlated decoder side information is considered. We impose the practical constraint that the encoder be unaware of even the statistical dependencies between source and side information. Two classes of rate-adaptive distributed source codes, both based on low-density parity-check (LDPC) codes, are developed and their design is studied. Specific realizations are shown to be better than alternatives of linear encoding and decoding complexity. The proposed rate-adaptive LDPC accumulate (LDPCA) codes and sum LDPC accumulate (SLDPCA) codes (of length 6336 bits) perform within 10% and 5% of the Slepian-Wolf bound in the moderate and high rate regimes, respectively. (c) 2006 Elsevier B.V. All rights reserved.
Keywords:
distributed source coding
Slepian-Wolf theorem
side information
LDPC codes
iterative decoding algorithms
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Signal Processing cover
Signal Processing
IF:
3.6
Papers:
9.9K
Citations:
1.7W

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