Distributed Arithmetic Coding for the Slepian-Wolf Problem

Distributed source coding schemes are typically based on the use of channels codes as source codes. In this paper we propose a new paradigm, named ldquodistributed arithmetic coding,rdquo which extends arithmetic codes to the distributed case employing sequential decoding aided by the side informati...

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Vydané v:	IEEE transactions on signal processing Ročník 57; číslo 6; s. 2245 - 2257
Hlavní autori:	Grangetto, M., Magli, E., Olmo, G.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York, NY IEEE 01.06.2009 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:	Applied sciences Arithmetic Arithmetic coding Codes Coding, codes compression Context modeling Decoding distributed source coding Encoding Entropy Exact sciences and technology Image coding Information, signal and communications theory LDPC codes Miscellaneous Parity check codes Signal and communications theory Signal processing Slepian-Wolf coding Source coding Telecommunications and information theory Turbo codes Video coding Wyner-Ziv coding Performance evaluation Source coding turbo codes, Wyner―Ziv coding Distributed source signal Turbo code Channel coding Sequential decoding LDPC codes Slepian―Wolf coding distributed source coding Statistical model Arithmetic code Signal processing Parity check codes Error correcting code Wyner Ziv problem Open market Arithmetic coding compression
ISSN:	1053-587X, 1941-0476
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Popis
Shrnutí:	Distributed source coding schemes are typically based on the use of channels codes as source codes. In this paper we propose a new paradigm, named ldquodistributed arithmetic coding,rdquo which extends arithmetic codes to the distributed case employing sequential decoding aided by the side information. In particular, we introduce a distributed binary arithmetic coder for the Slepian-Wolf coding problem, along with a joint decoder. The proposed scheme can be applied to two sources in both the asymmetric mode, wherein one source acts as side information, and the symmetric mode, wherein both sources are coded with ambiguity, at any combination of achievable rates. Distributed arithmetic coding provides several advantages over existing Slepian-Wolf coders, especially good performance at small block lengths, and the ability to incorporate arbitrary source models in the encoding process, e.g., context-based statistical models, in much the same way as a classical arithmetic coder. We have compared the performance of distributed arithmetic coding with turbo codes and low-density parity-check codes, and found that the proposed approach is very competitive.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Article-2 ObjectType-Feature-1 content type line 23
ISSN:	1053-587X 1941-0476
DOI:	10.1109/TSP.2009.2014280