Rate-adaptive codes for the entire Slepian-Wolf region and arbitrarily correlated sources

Toto-Zarasoa, V.; Roumy, Aline; Guillemot, Christine

doi:10.1109/icassp.2008.4518272

Cited by 16 publications

(25 citation statements)

References 18 publications

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“…Puncturing the syndrome bits may degrade the performance of the code. The approach considered in [34], similarly to [36] for the asymmetric setup, consists of first protecting the syndromes with an accumulator code. The effect of the accumulator code followed by the puncturing is equivalent to merging some rows of the parity-check matrix H by adding them, thus constructing a matrix H i of dimension (n Ϫ k i ) ϫ n, of rank n Ϫ k i .…”

Section: Rate Adaptationmentioning

confidence: 99%

Toward Constructive Slepian–Wolf Coding Schemes

Guillemot¹,

Roumy²

2009

Distributed Source Coding

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Section: Rate Adaptationmentioning

confidence: 99%

Toward Constructive Slepian–Wolf Coding Schemes

Guillemot¹,

Roumy²

2009

Distributed Source Coding

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“…Likewise, s ′ m is built upons m ands m . Again we should emphasize that using R ′ m = S ′ m S ′H m (andR ′ m ) may not necessarily improve the error localization; to expect gain by virtue of the extended subspace method, we need to compensate for the termHc in (18). This is done for the syndrome-based DSC in the next section.…”

Section: Now Withmentioning

confidence: 99%

“…Rate-adaption using puncturing is not natural for syndromebased DSC systems [18]. Instead, the encoder can transmit a short syndrome based on an aggressive code and augment it with additional syndrome samples, if decoding fails.…”

Section: B Syndrome-based Approachmentioning

confidence: 99%

Extended subspace error localization for rate-adaptive distributed source coding

Vaezi

Labeau

2013

2013 IEEE International Symposium on Information Theory

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Abstract-A subspace-based approach for rate-adaptive distributed source coding (DSC) based on discrete Fourier transform (DFT) codes is developed. Punctured DFT codes can be used to implement rate-adaptive source coding, however they perform poorly after even moderate puncturing since the performance of the subspace error localization degrades severely. The proposed subspace-based error localization extends and improves the existing one, based on additional syndrome, and is naturally suitable for rate-adaptive distributed source coding architecture.

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“…For instance, Pradhan and Ramchandran 8 proposed a method to implement nonasymmetric DSC based on the DISCUS algorithm. Zarasoa et al 13 proposed a nonsymmetric DSC scheme based on syndrome LDPC. At the decoder side, the two received sources were decoded by making use of the mutual information that is directly transmitted.…”

Section: Introductionmentioning

confidence: 99%

High-quality symmetric Wyner–Ziv coding scheme for low-motion videos

Masala

Qing

et al. 2014

J. Electron. Imaging

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Traditional Wyner-Ziv video coding (WZVC) structures require either intra (Key) or Wyner-Ziv (WZ) coding of frames. Unfortunately, keeping the video quality approximately constant implies drastic bit-rate fluctuations because consecutive frames of different types (Key or WZ) present significantly different compression performances. Moreover, certain scenarios severely limit rate fluctuation. This work proposes a WZVC scheme with low bit-rate fluctuations based on a symmetric coding structure. First, this work investigates the performance of a generic nonasymmetric distributed source coding structure, showing that the low-density parity-check accumulate channel decoding method is best suited. This is used as a basis to design a symmetric WZVC scheme in which every input video frame is divided into four parallel subframes through subsampling, and then the subframes are encoded by using a symmetric method. Compared with the traditional asymmetric WZVC scheme, the proposed scheme can achieve higher bit-rate stability over time, which is a great advantage to guarantee a reliable transmission in many wireless communication application environments in which bit-rate fluctuations are strongly constrained. Simulation results show the effectiveness of the proposed symmetric WZVC scheme in maintaining a steady bit rate and quality, as well as a quality comparison with the traditional WZVC scheme.

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Rate-adaptive codes for the entire Slepian-Wolf region and arbitrarily correlated sources

Cited by 16 publications

References 18 publications

Toward Constructive Slepian–Wolf Coding Schemes

Toward Constructive Slepian–Wolf Coding Schemes

Extended subspace error localization for rate-adaptive distributed source coding

High-quality symmetric Wyner–Ziv coding scheme for low-motion videos

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