Results 261 to 270 of about 13,774 (286)
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A Flexible Macroblock Scheme for Unequal Error Protection
2006 International Conference on Image Processing, 2006This paper proposes an enhanced error protection scheme using flexible macroblock ordering in H.264/AVC. The algorithm uses a two-phase system. In the first phase, the importance of every macroblock is calculated based on its influence on the current frame and future frames.
Yves Dhondt +2 more
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Quaternary Unequal Error Protection Codes
2008We consider codes that offer unequal error protection to different information symbols, as measured by the so-called separation vector (a generalisation of the minimum Hamming distance). We determine the parameters of all optimal linear quaternary codes of length at most eleven.
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Parallel concatenated codes with unequal error protection
IEEE Transactions on Communications, 1998Summary: We show how parallel concatenated codes (PCC's, also known as turbo codes) can be endowed with unequal error protection (UEP). Given the two component encoders of the PCC encoder and the desired interleaver size, UEP is achieved by: 1) suitably positioning the different importance classes of information symbols into the encoder input frame; 2)
Giuseppe Caire, Ezio Biglieri
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Canonical convolutional encoders for unequal error protection
2008 IEEE International Symposium on Information Theory, 2008In this paper, canonical convolutional encoders are studied for unequal error protection (UEP) from an algebraic theoretical viewpoint. We show that for any convolutional code there exists at least a canonical generator matrix which has the greatest separation vector, and hence the optimal UEP capability, among all canonical ones.
Chung-Hsuan Wang, Chi-Chao Chao
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Unequal error protection and progressive decoding for JPEG2000
Signal Processing: Image Communication, 2005This paper presents an unequal error protection scheme for still and motion image transmissions. The underlying channel codes are created using a Plotkin construction and offer the novel ability of using one long channel codeword to protect an entire image, yet still allowing progressive decoding. Progressive quality improvements occur in two ways: the
Lingling Pu +3 more
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Unequal Error Protection for Scalable Video Storage in the Cloud
IEEE Transactions on Multimedia, 2015Redundancy is necessary for a storage system to recover from errors. The frequent errors in large-scale systems, e.g. cloud, make it desired to reduce the recovery cost. Among all kinds of data stored in the cloud, video takes a large portion due to its large data volume.
Xiaodan Song +4 more
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Systematic lossy error protection versus layered coding with unequal error protection
SPIE Proceedings, 2005In this paper we compare two schemes for error-resilient video transmission, viz., systematic lossy error protection, and layered coding with unequal error protection. In the first scheme, the systematic portion consists of the compressed video signal transmitted without channel coding.
Shantanu D. Rane, Bernd Girod
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On decoding unequal error protection product codes
IEEE Transactions on Information Theory, 1990The decoding of unequal error protection product codes, which are a combination of linear unequal error protection (UEP) codes and product codes, is addressed. A nonconstructive proof of the existence of a good error-erasure-decoding algorithm is presented; however, obtaining the decoding procedure is still an open research problem.
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Unequal steganography with unequal error protection for wireless physiological signal transmission
2017 IEEE International Conference on Communications (ICC), 2017In this paper, an innovative idea of secure and energy efficient electrocardiogram steganography based on Discrete Wavelet Transform (DWT) is proposed, in which different important ECG data are steganographed with variable embedding strengths so that the reconstructed ECG signal quality is preserved.
Neerja Sahu, Dongming Peng, Hamid Sharif
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Improved upper bounds for codes with unequal error protection
Proceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005Asymptotic nonexistence bounds for unequal error protecting codes with two protection levels are considered. We show that the improved estimates, reported by Litsyn on the possible distance distributions for codes, may sometimes yield sharper upper bounds than the previously known ones, for both nonlinear and linear codes having two protection ...
Shraga I. Bross, Simon Litsyn
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