Analysis of Decorrelation Transform Gain for Uncoded Wireless Image and Video Communication

An uncoded transmission scheme called SoftCast has recently shown great potential for wireless video transmission. Unlike conventional approaches, SoftCast processes input images only by a series of transformations and modulates the coefficients directly to a dense constellation for transmission. Th...

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Veröffentlicht in:IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. - 1992. - 25(2016), 4 vom: 01. Apr., Seite 1820-33
1. Verfasser: Ruiqin Xiong (VerfasserIn)
Weitere Verfasser: Feng Wu, Jizheng Xu, Xiaopeng Fan, Chong Luo, Wen Gao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a An uncoded transmission scheme called SoftCast has recently shown great potential for wireless video transmission. Unlike conventional approaches, SoftCast processes input images only by a series of transformations and modulates the coefficients directly to a dense constellation for transmission. The transmission is uncoded and lossy in nature, with its noise level commensurate with the channel condition. This paper presents a theoretical analysis for an uncoded visual communication, focusing on developing a quantitative measurements for the efficiency of decorrelation transform in a generalized uncoded transmission framework. Our analysis reveals that the energy distribution among signal elements is critical for the efficiency of uncoded transmission. A decorrelation transform can potentially bring a significant performance gain by boosting the energy diversity in signal representation. Numerical results on Markov random process and real image and video signals are reported to evaluate the performance gain of using different transforms in uncoded transmission. The analysis presented in this paper is verified by simulated SoftCast transmissions. This provide guidelines for designing efficient uncoded video transmission schemes 
650 4 |a Journal Article 
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700 1 |a Jizheng Xu  |e verfasserin  |4 aut 
700 1 |a Xiaopeng Fan  |e verfasserin  |4 aut 
700 1 |a Chong Luo  |e verfasserin  |4 aut 
700 1 |a Wen Gao  |e verfasserin  |4 aut 
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